Glass ceramic and glass ceramic product

Abstract

The invention provides a microcrystalline glass product with excellent mechanical performance and optical performance. The microcrystalline glass product comprises the following components in percentage by weight: 46-69% of SiO2; 8%-18% of Al2O3; 10 to 25 percent of Li2O; 5 to 15 percent of ZrO2; 2 to 10 percent of P2O5; y2O3: greater than 0 but less than or equal to 8%. Through reasonable component design, the obtained microcrystalline glass and microcrystalline glass products have excellent mechanical properties and optical properties, and are suitable for electronic equipment or display equipment.

Description

[0001] This application is a divisional application of the invention patent application with application number 202111128160.0, application date December 31, 2020, and name “Microcrystalline glass, microcrystalline glass products and manufacturing methods thereof”. Technical Field

[0002] The present invention relates to a microcrystalline glass, a microcrystalline glass product and a manufacturing method thereof. In particular, the present invention relates to a microcrystalline glass, a microcrystalline glass product and a manufacturing method thereof having excellent mechanical and optical properties and being suitable for electronic equipment or display equipment. Background Art

[0003] Glass-ceramics is a material created by heat-treating glass to produce crystals within it. It possesses superior mechanical properties compared to conventional glass. The microcrystals formed within the glass offer significant advantages over conventional glass in terms of bending resistance, abrasion resistance, and drop resistance. Furthermore, the mechanical properties of glass-ceramics can be further enhanced through chemical strengthening.

[0004] Based on the above advantages, microcrystalline glass or glass products obtained after processing are currently used in display devices or electronic devices with high requirements such as drop resistance, pressure resistance, and scratch resistance, especially in the front and back covers of portable electronic devices (such as mobile phones, watches, PADs, etc.).

[0005] With the advancement of technology, electronic devices and displays are placing higher demands on the optical properties of the glass materials used in them. Optical properties refer to the properties of a material when it absorbs, reflects, and refracts light, and include transmittance, haze, |B| value, and refractive index. However, currently available glass-ceramics suffer from poor chemical strengthening properties, high haze, and large |B| values, making them difficult to use in demanding display and electronic devices.

[0006] Therefore, developing a microcrystalline glass and microcrystalline glass products with excellent mechanical and optical properties and suitable for display devices or electronic devices has become the goal pursued by scientific and technological personnel. Summary of the Invention

[0007] The technical problem to be solved by the present invention is to provide a glass-ceramic product with excellent mechanical and optical properties.

[0008] The technical solution adopted by the present invention to solve the technical problem is:

[0009] (1) Microcrystalline glass products, the components of which, expressed in percentage by weight, contain: SiO2: 45-70%; Al2O3: 8-18%; Li2O: 10-25%; ZrO2: 5-15%; P2O5: 2-10%; Y2O3: greater than 0 but less than or equal to 8%.

[0010] (2) The microcrystalline glass product according to (1), wherein the components, expressed in weight percentage, further contain: K2O: 0-5%; and / or MgO: 0-2%; and / or ZnO: 0-2%; and / or Na2O: 0-6%; and / or SrO: 0-5%; and / or BaO: 0-5%; and / or CaO: 0-5%; and / or TiO2: 0-5%; and / or B2O3: 0-5%; and / or Ln2O3: 0-5%; and / or clarifier: 0-2%, wherein the Ln2O3 is one or more of La2O3, Gd2O3, and Yb2O3, and the clarifier is one or more of Sb2O3, SnO2, SnO, CeO2, F, Cl, and Br.

[0011] (3) A glass-ceramic product, the components of which include SiO2, Al2O3, Li2O, ZrO2, P2O5 and Y2O3, wherein the crystalline phase of the glass-ceramic product contains lithium silicate, and the lithium silicate has a higher weight percentage than other crystalline phases.

[0012] (4) Microcrystalline glass products, whose components contain SiO2, Al2O3, Li2O, ZrO2 and P2O5, and the average optical |B| value of microcrystalline glass products with a thickness of less than 1 mm at 400 to 800 nm is less than 0.6.

[0013] (5) A glass-ceramic product containing a lithium silicate crystal phase, wherein the glass-ceramic product has a drop ball test height of 1300 mm or more.

[0014] (6) The microcrystalline glass product according to any one of (3) to (5), wherein the components thereof, expressed in percentage by weight, comprise: SiO2: 45-70%; Al2O3: 8-18%; Li2O: 10-25%; ZrO2: 5-15%; P2O5: 2-10%; and Y2O3: greater than 0 but less than or equal to 8%.

[0015] (7) The microcrystalline glass product according to any one of (3) to (6), wherein the components, expressed in weight percentage, further contain: K2O: 0-5%; and / or MgO: 0-2%; and / or ZnO: 0-2%; and / or Na2O: 0-6%; and / or SrO: 0-5%; and / or BaO: 0-5%; and / or CaO: 0-5%; and / or TiO2: 0-5%; and / or B2O3: 0-5%; and / or Ln2O3: 0-5%; and / or a clarifier: 0-2%, wherein the Ln2O3 is one or more of La2O3, Gd2O3, and Yb2O3, and the clarifier is one or more of Sb2O3, SnO2, SnO, CeO2, F, Cl, and Br.

[0016] (8) A microcrystalline glass product, the components of which are expressed in percentage by weight and are composed of SiO2: 45-70%; Al2O3: 8-18%; Li2O: 10-25%; ZrO2: 5-15%; P2O5: 2-10%; Y2O3: greater than 0 but less than or equal to 8%; K2O: 0-5%; MgO: 0-2%; ZnO: 0-2%; Na2O: 0-6%; SrO: 0-5%; BaO: 0-5%; CaO: 0-5%; TiO2: 0-5%; B2O3: 0-5%; Ln2O3: 0-5%; and a clarifier: 0-2%, wherein the Ln2O3 is one or more of La2O3, Gd2O3, and Yb2O3, and the clarifier is one or more of Sb2O3, SnO2, SnO, CeO2, F, Cl, and Br.

[0017] (9) The glass-ceramic product according to any one of (1) to (8), wherein the content of each component satisfies one or more of the following five conditions:

[0018] 1) Y2O3 / ZrO2 is greater than 0;

[0019] 2) (Li2O+ZrO2+P2O5) / Y2O3 is 2.5 to 50.0;

[0020] 3) Al2O3 / (Li2O+ZrO2+P2O5) is 0.16-0.9;

[0021] 4) Na2O / Y2O3 is less than 6.0;

[0022] 5) Y2O3 / (Al2O3+SiO2) is greater than 0 but less than or equal to 0.15.

[0023] (10) The glass-ceramic product according to any one of (1) to (9), wherein the components are expressed in weight percentage, wherein: SiO2: 50-65%; and / or Al2O3: 8-15%; and / or Li2O: 13-22%; and / or ZrO2: 6-12%; and / or P2O5: 3.5-9%; and / or K2O: 0-4%; and / or MgO: 0-1%; and / or ZnO: 0-1%; and / or Na2O: 1-5%; and / or Y2O3 : 1-7%; and / or SrO: 0-3%; and / or BaO: 0-3%; and / or CaO: 0-3%; and / or TiO2: 0-3%; and / or B2O3: 0-3%; and / or Ln2O3: 0-4%; and / or clarifier: 0-1%, wherein the Ln2O3 is one or more of La2O3, Gd2O3, and Yb2O3, and the clarifier is one or more of Sb2O3, SnO2, SnO, CeO2, F, Cl, and Br.

[0024] (11) The glass-ceramic product according to any one of (1) to (10), wherein the content of each component satisfies one or more of the following five conditions:

[0025] 1) Y2O3 / ZrO2 is 0.1 to 1.0;

[0026] 2) (Li2O+ZrO2+P2O5) / Y2O3 is 3.0-40.0;

[0027] 3) Al2O3 / (Li2O+ZrO2+P2O5) is 0.18-0.6;

[0028] 4) Na2O / Y2O3 is 0.1 to 5.0;

[0029] 5)Y2O3 / (Al2O3+SiO2) is 0.01~0.12.

[0030] (12) The glass-ceramic product according to any one of (1) to (11), wherein the components are expressed in weight percentage, wherein: SiO2: 53-63%; and / or Al2O3: 8-12%; and / or Li2O: 14-21%; and / or ZrO2: 7-12%; and / or P2O5: 4-8%; and / or K2O: 0-2%; and / or Y2O3: 2-6%; and / or B2O3: 0-2%; and / or Na2O: 1 .5-4%; and / or SrO: 0-1%; and / or TiO2: 0-1%; and / or BaO: 0-1%; and / or CaO: 0-1%; and / or Ln2O3: 0-3%; and / or clarifier: 0-0.5%, wherein the Ln2O3 is one or more of La2O3, Gd2O3, and Yb2O3, and the clarifier is one or more of Sb2O3, SnO2, SnO, CeO2, F, Cl, and Br.

[0031] (13) The glass-ceramic product according to any one of (1) to (12), wherein the content of each component satisfies one or more of the following five conditions:

[0032] 1) Y2O3 / ZrO2 is 0.2-0.6;

[0033] 2) (Li2O+ZrO2+P2O5) / Y2O3 is 4.0-21.0;

[0034] 3) Al2O3 / (Li2O+ZrO2+P2O5) is 0.19-0.5;

[0035] 4) Na2O / Y2O3 is 0.3 to 2.0;

[0036] 5)Y2O3 / (Al2O3+SiO2) is 0.03~0.09.

[0037] (14) The microcrystalline glass product according to any one of (1) to (13), wherein its components do not contain SrO; and / or do not contain BaO; and / or do not contain CaO; and / or do not contain ZnO; and / or do not contain PbO; and / or do not contain As2O3; and / or do not contain TiO2; and / or do not contain B2O3; and / or do not contain Ln2O3; and / or do not contain F; and / or do not contain Ta2O5.

[0038] (15) The glass-ceramic product according to any one of (1) to (14), wherein the crystal phase of the glass-ceramic product contains lithium silicate and / or lithium phosphate.

[0039] (16) According to any one of the microcrystalline glass products described in (1) to (15), the crystalline phase of the microcrystalline glass product mainly contains lithium silicate, and the lithium silicate has a higher weight percentage than other crystalline phases. The lithium silicate accounts for 10 to 63.5% of the microcrystalline glass product, and preferably 15 to 55%.

[0040] (17) The microcrystalline glass product according to any one of (1) to (16), wherein the microcrystalline glass product contains a lithium phosphate crystal phase, and the lithium phosphate crystal phase accounts for 3 to 15% by weight of the microcrystalline glass product, preferably 5 to 12%.

[0041] (18) The microcrystalline glass product according to any one of (1) to (17), wherein the surface stress of the microcrystalline glass product is 600 MPa or more, preferably 650 MPa or more, and more preferably 700 MPa or more.

[0042] (19) The microcrystalline glass product according to any one of (1) to (18), wherein the microcrystalline glass product has a four-point bending strength of 600 MPa or more, preferably 650 MPa or more, and more preferably 700 MPa or more.

[0043] (20) The microcrystalline glass product according to any one of (1) to (19), wherein the depth of the ion exchange layer of the microcrystalline glass product is 20 μm or more, preferably 30 μm or more, and more preferably 40 μm or more.

[0044] (21) The glass-ceramic product according to any one of (1) to (20), wherein the drop ball test height of the glass-ceramic product is 1300 mm or more, preferably 1400 mm or more, and more preferably 1500 mm or more.

[0045] (22) The glass-ceramic product according to any one of (1) to (21), wherein the glass-ceramic product has a strength and / or a fracture toughness of 1 MPa·m 1 / 2 Above, preferably 1.1 MPa·m 1 / 2 More than 1.2 MPa·m1 / 2 above.

[0046] (23) The glass-ceramic product according to any one of (1) to (22), wherein the glass-ceramic product has a Vickers hardness of 700 kgf / mm 2 Above, preferably 720kgf / mm 2 More than 730kgf / mm 2 above.

[0047] (24) The glass-ceramic product according to any one of (1) to (23), wherein the crystallinity of the glass-ceramic product is 50% or more, preferably 60% or more, and more preferably 70% or more;

[0048] (25) The microcrystalline glass product according to any one of (1) to (24), wherein the grain size of the microcrystalline glass product is 50 nm or less, preferably 40 nm or less, and more preferably 30 nm or less.

[0049] (26) The microcrystalline glass product according to any one of (1) to (15), wherein the haze of the microcrystalline glass product having a thickness of 1 mm or less is 0.15% or less, preferably 0.12% or less, and more preferably 0.1% or less.

[0050] (27) The microcrystalline glass product according to any one of (1) to (26), wherein the average transmittance of the microcrystalline glass product having a thickness of 1 mm or less at a wavelength of 400 to 800 nm is 89% or more.

[0051] (28) The microcrystalline glass product according to any one of (1) to (27), wherein the transmittance of the microcrystalline glass product having a thickness of 1 mm or less at a wavelength of 550 nm is 91% or more.

[0052] (29) According to any one of the microcrystalline glass products described in (1) to (28), the average optical |B| value at 400 to 800 nm of the microcrystalline glass product with a thickness of less than 1 mm is less than 0.6, preferably less than 0.55, and more preferably less than 0.5.

[0053] (30) The microcrystalline glass product according to any one of (26) to (29) has a thickness of 0.2 to 1 mm, preferably 0.3 to 0.9 mm, more preferably 0.5 to 0.8 mm, and further preferably 0.55 mm, 0.6 mm, 0.68 mm, 0.72 mm, or 0.75 mm.

[0054] (31) The glass-ceramics product according to any one of (1) to (7), wherein the glass-ceramics product contains a colorant.

[0055] (32) According to the microcrystalline glass product described in (31), the colorant contains, expressed in weight percentage, the following: NiO: 0-4%; and / or Ni2O3: 0-4%; and / or CoO: 0-2%; and / or Co2O3: 0-2%; and / or Fe2O3: 0-7%; and / or MnO2: 0-4%; and / or Er2O3: 0-8%; and / or Nd2O3: 0-8%; and / or Cu2O: 0-4%; and / or Pr2O3: 0-8%; and / or CeO2: 0-4%.

[0056] (33) According to the microcrystalline glass product described in any one of (31) or (32), the colorant contains, expressed in weight percentage, the following: NiO: 0.1~4%; and / or Ni2O3: 0.1~4%; and / or CoO: 0.05~2%; and / or Co2O3: 0.05~2%; and / or Fe2O3: 0.2~7%; and / or MnO2: 0.1~4%; and / or Er2O3: 0.4~8%; and / or Nd2O3: 0.4~8%; and / or Cu2O: 0.5~4%; and / or Pr2O3: 0.4~8%; and / or CeO2: 0.5~4%.

[0057] (34) According to the microcrystalline glass product described in any one of (31) or (32), the colorant contains, expressed in weight percentage, the following: NiO: 0.1~3%; and / or Ni2O3: 0.1~3%; and / or CoO: 0.05~1.8%; and / or Co2O3: 0.05~1.8%; and / or Fe2O3: 0.2~5%; and / or MnO2: 0.1~3%; and / or Er2O3: 0.4~6%; and / or Nd2O3: 0.4~6%; and / or Cu2O: 0.5~3%; and / or Pr2O3: 0.4~6%; and / or CeO2: 0.5~3%.

[0058] (35) According to any one of the microcrystalline glass products described in (31) or (32), the colorant contains, expressed in weight percentage, the following: NiO: 0.1 to 3%; and / or Ni2O3: 0.1 to 3%.

[0059] (36) The microcrystalline glass product according to any one of (31) or (32), wherein the colorant contains, expressed in weight percentage, the following: CoO: 0.05 to 1.8%; and / or Co2O3: 0.05 to 1.8%.

[0060] (37) According to the microcrystalline glass product described in any one of (31) or (32), the colorant contains, expressed in weight percentage, the following: Cu2O: 0.5-3%; and / or CeO2: 0.5-3%.

[0061] (38) According to any one of the microcrystalline glass products described in (31) or (32), the colorant contains, expressed in weight percentage, the following: Fe2O3: 0.2~5%, CoO: 0.05~0.3%; or Fe2O3: 0.2~5%, CoO: 0.05~0.3%; or Fe2O3: 0.2~5%, CoO: 0.05~0.3%, NiO: 0.1~1%; or Fe2O3: 0.2~5%, Co2O3: 0.05~0.3%, NiO: 0.1~1%.

[0062] (39) According to any one of the microcrystalline glass products described in (31) or (32), the colorant contains, expressed in weight percentage, the following: Pr2O3: 0.4~6%; or Fe2O3: 0.2~5%; or MnO2: 0.1~3%; or Er2O3: 0.4~6%; or Nd2O3: 0.4~6%.

[0063] (40) According to the microcrystalline glass product described in any one of (31) or (32), the colorant contains, expressed in weight percentage, the following: Er2O3: 0.4~6%, Nd2O3: 0.4~4%, and MnO2: 0.1~2%.

[0064] The present invention also provides a microcrystalline glass with excellent mechanical and optical properties.

[0065] The technical solution adopted by the present invention to solve the technical problem is:

[0066] (41) Microcrystalline glass, the components of which, expressed in percentage by weight, contain: SiO2: 45-70%; Al2O3: 8-18%; Li2O: 10-25%; ZrO2: 5-15%; P2O5: 2-10%; Y2O3: greater than 0 but less than or equal to 8%.

[0067] (42) The microcrystalline glass according to (41), whose components, expressed in weight percentage, further contain: K2O: 0-5%; and / or MgO: 0-2%; and / or ZnO: 0-2%; and / or Na2O: 0-6%; and / or SrO: 0-5%; and / or BaO: 0-5%; and / or TiO2: 0-5%; and / or CaO: 0-5%; and / or B2O3: 0-5%; and / or Ln2O3: 0-5%; and / or clarifier: 0-2%, wherein the Ln2O3 is one or more of La2O3, Gd2O3, and Yb2O3, and the clarifier is one or more of Sb2O3, SnO2, SnO, CeO2, F, Cl, and Br.

[0068] (43) Glass-ceramics, comprising SiO2, Al2O3, Li2O, ZrO2, P2O5 and Y2O3, wherein the crystalline phase of the glass-ceramics contains lithium silicate, which has a higher weight percentage than other crystalline phases.

[0069] (44) Microcrystalline glass, the components of which include SiO2, Al2O3, Li2O, ZrO2 and P2O5, and the average optical |B| value of 400 to 800 nm of microcrystalline glass with a thickness of less than 1 mm is less than 0.6.

[0070] (45) Microcrystalline glass, containing a lithium silicate crystal phase, wherein the body of the microcrystalline glass has a drop height of more than 1000 mm.

[0071] (46) The microcrystalline glass according to any one of (43) to (45), wherein its components, expressed in weight percentage, contain: SiO2: 45 to 70%; Al2O3: 8 to 18%; Li2O: 10 to 25%; ZrO2: 5 to 15%; P2O5: 2 to 10%; Y2O3: greater than 0 but less than or equal to 8%.

[0072] (47) The microcrystalline glass according to any one of (43) to (46), wherein its components, expressed in weight percentage, further contain: K2O: 0-5%; and / or MgO: 0-2%; and / or ZnO: 0-2%; and / or Na2O: 0-6%; and / or SrO: 0-5%; and / or BaO: 0-5%; and / or CaO: 0-5%; and / or TiO2: 0-5%; and / or B2O3: 0-5%; and / or Ln2O3: 0-5%; and / or clarifier: 0-2%, wherein the Ln2O3 is one or more of La2O3, Gd2O3, and Yb2O3, and the clarifier is one or more of Sb2O3, SnO2, SnO, CeO2, F, Cl, and Br.

[0073] (48) Glass-ceramics, the components of which are expressed in percentage by weight and are composed of SiO2: 45-70%; Al2O3: 8-18%; Li2O: 10-25%; ZrO2: 5-15%; P2O5: 2-10%; Y2O3: greater than 0 but less than or equal to 8%; K2O: 0-5%; MgO: 0-2%; ZnO: 0-2%; Na2O: 0-6%; SrO: 0-5%; BaO: 0-5%; CaO: 0-5%; TiO2: 0-5%; B2O3: 0-5%; Ln2O3: 0-5%; and a clarifier: 0-2%, wherein the Ln2O3 is one or more of La2O3, Gd2O3, and Yb2O3, and the clarifier is one or more of Sb2O3, SnO2, SnO, CeO2, F, Cl, and Br.

[0074] (49) The glass-ceramics according to any one of (41) to (48), wherein the components are expressed in weight percentages, and the content of each component satisfies one or more of the following five conditions:

[0075] 1) Y2O3 / ZrO2 is greater than 0;

[0076] 2) (Li2O+ZrO2+P2O5) / Y2O3 is 2.5 to 50.0;

[0077] 3) Al2O3 / (Li2O+ZrO2+P2O5) is 0.16-0.9;

[0078] 4) Na2O / Y2O3 is less than 6.0;

[0079] 5) Y2O3 / (Al2O3+SiO2) is greater than 0 but less than or equal to 0.15.

[0080] (50) The glass-ceramic according to any one of (41) to (49), wherein the components are expressed in weight percentage, wherein: SiO2: 50-65%; and / or Al2O3: 8-15%; and / or Li2O: 13-22%; and / or ZrO2: 6-12%; and / or P2O5: 3.5-9%; and / or K2O: 0-4%; and / or MgO: 0-1%; and / or ZnO: 0-1%; and / or Na2O: 1-5%; and / or Y2O3 : 1-7%; and / or SrO: 0-3%; and / or TiO2: 0-3%; and / or BaO: 0-3%; and / or CaO: 0-3%; and / or B2O3: 0-3%; and / or Ln2O3: 0-4%; and / or clarifier: 0-1%, wherein the Ln2O3 is one or more of La2O3, Gd2O3, and Yb2O3, and the clarifier is one or more of Sb2O3, SnO2, SnO, CeO2, F, Cl, and Br.

[0081] (51) The glass-ceramics according to any one of (41) to (50), wherein the components are expressed in weight percentages, and the content of each component satisfies one or more of the following five conditions:

[0082] 1) Y2O3 / ZrO2 is 0.1 to 1.0;

[0083] 2) (Li2O+ZrO2+P2O5) / Y2O3 is 3.0-40.0;

[0084] 3) Al2O3 / (Li2O+ZrO2+P2O5) is 0.18-0.6;

[0085] 4) Na2O / Y2O3 is 0.1 to 5.0;

[0086] 5)Y2O3 / (Al2O3+SiO2) is 0.01~0.12.

[0087] (52) The glass-ceramic according to any one of (41) to (51), wherein the components are expressed in weight percentage, wherein: SiO2: 53-63%; and / or Al2O3: 8-12%; and / or Li2O: 14-21%; and / or ZrO2: 7-12%; and / or P2O5: 4-8%; and / or K2O: 0-2%; and / or Y2O3: 2-6%; and / or B2O3: 0-2%; and / or Na2O: 1 .5-4%; and / or SrO: 0-1%; and / or TiO2: 0-1%; and / or BaO: 0-1%; and / or CaO: 0-1%; and / or Ln2O3: 0-3%; and / or clarifier: 0-0.5%, wherein the Ln2O3 is one or more of La2O3, Gd2O3, and Yb2O3, and the clarifier is one or more of Sb2O3, SnO2, SnO, CeO2, F, Cl, and Br.

[0088] (53) The glass-ceramics according to any one of (41) to (52), wherein the components are expressed in weight percentages, and the content of each component satisfies one or more of the following five conditions:

[0089] 1) Y2O3 / ZrO2 is 0.2-0.6;

[0090] 2) (Li2O+ZrO2+P2O5) / Y2O3 is 4.0-21.0;

[0091] 3) Al2O3 / (Li2O+ZrO2+P2O5) is 0.19-0.5;

[0092] 4) Na2O / Y2O3 is 0.3 to 2.0;

[0093] 5)Y2O3 / (Al2O3+SiO2) is 0.03~0.09.

[0094] (54) The microcrystalline glass according to any one of (41) to (53), wherein its components do not contain SrO; and / or do not contain BaO; and / or do not contain CaO; and / or do not contain ZnO; and / or do not contain PbO; and / or do not contain As2O3; and / or do not contain TiO2; and / or do not contain B2O3; and / or do not contain Ln2O3; and / or do not contain F; and / or do not contain Ta2O5.

[0095] (55) According to any one of the microcrystalline glass described in (41) to (54), the crystal phase of the microcrystalline glass contains lithium silicate; and / or lithium phosphate.

[0096] (56) According to any one of the microcrystalline glass described in (41) to (55), the crystalline phase of the microcrystalline glass mainly contains lithium silicate, and lithium silicate has a higher weight percentage than other crystalline phases. Lithium silicate accounts for 10 to 63.5% of the microcrystalline glass, and preferably 15 to 55%.

[0097] (57) According to any one of the microcrystalline glass described in (41) to (56), the microcrystalline glass contains a lithium phosphate crystal phase, and the lithium phosphate crystal phase accounts for 3 to 15% by weight of the microcrystalline glass, preferably 5 to 12%.

[0098] (58) The microcrystalline glass according to any one of (41) to (57), wherein the crystallinity of the microcrystalline glass is 50% or more, preferably 60% or more, and more preferably 70% or more.

[0099] (59) The microcrystalline glass according to any one of (41) to (58), wherein the grain size of the microcrystalline glass is 50 nm or less, preferably 40 nm or less, and more preferably 30 nm or less.

[0100] (60) The microcrystalline glass according to any one of (41) to (59), wherein the thermal expansion coefficient of the microcrystalline glass is 75 to 95×10 -7 / K.

[0101] (61) The microcrystalline glass according to any one of (41) to (60), wherein the refractive index of the microcrystalline glass is 1.5700 to 1.5800.

[0102] (62) According to any one of the microcrystalline glass described in (41) to (61), the ball drop height of the microcrystalline glass body is greater than 1000 mm, preferably greater than 1100 mm, and more preferably greater than 1200 mm.

[0103] (63) The microcrystalline glass according to any one of (41) to (62), wherein the Vickers hardness of the microcrystalline glass is 650 kgf / mm 2 Above, preferably 680kgf / mm 2 More than 700 kgf / mm 2 above.

[0104] (64) According to any one of the microcrystalline glass described in (41) to (63), the haze of the microcrystalline glass with a thickness of less than 1 mm is less than 0.15%, preferably less than 0.12%, and more preferably less than 0.1%.

[0105] (65) The microcrystalline glass according to any one of (41) to (64), wherein the average transmittance of the microcrystalline glass with a thickness of less than 1 mm at a wavelength of 400 to 800 nm is greater than 89%.

[0106] (66) According to any one of the microcrystalline glass described in (41) to (65), the transmittance of the microcrystalline glass with a thickness of less than 1 mm at a wavelength of 550 nm is greater than 91%.

[0107] (67) According to any one of the microcrystalline glass described in (41) to (66), the average optical |B| value of 400 to 800 nm of the microcrystalline glass with a thickness of less than 1 mm is less than 0.6, preferably less than 0.55, and more preferably less than 0.5.

[0108] (68) According to any one of the microcrystalline glass described in (64) to (67), the thickness of the microcrystalline glass is 0.2 to 1 mm, preferably 0.3 to 0.9 mm, more preferably 0.5 to 0.8 mm, and further preferably 0.55 mm or 0.6 mm or 0.68 mm or 0.72 mm or 0.75 mm.

[0109] (69) The microcrystalline glass according to any one of (41) to (47), wherein the microcrystalline glass contains a colorant.

[0110] (70) According to the microcrystalline glass described in (69), the colorant contains, expressed in weight percentage, the following: NiO: 0~4%; and / or Ni2O3: 0~4%; and / or CoO: 0~2%; and / or Co2O3: 0~2%; and / or Fe2O3: 0~7%; and / or MnO2: 0~4%; and / or Er2O3: 0~8%; and / or Nd2O3: 0~8%; and / or Cu2O: 0~4%; and / or Pr2O3: 0~8%; and / or CeO2: 0~4%.

[0111] (71) According to the microcrystalline glass described in any one of (69) or (70), the colorant contains, expressed in weight percentage, the following: NiO: 0.1~4%; and / or Ni2O3: 0.1~4%; and / or CoO: 0.05~2%; and / or Co2O3: 0.05~2%; and / or Fe2O3: 0.2~7%; and / or MnO2: 0.1~4%; and / or Er2O3: 0.4~8%; and / or Nd2O3: 0.4~8%; and / or Cu2O: 0.5~4%; and / or Pr2O3: 0.4~8%; and / or CeO2: 0.5~4%.

[0112] (72) According to the microcrystalline glass described in any one of (69) or (70), the colorant contains, expressed in weight percentage, the following: NiO: 0.1~3%; and / or Ni2O3: 0.1~3%; and / or CoO: 0.05~1.8%; and / or Co2O3: 0.05~1.8%; and / or Fe2O3: 0.2~5%; and / or MnO2: 0.1~3%; and / or Er2O3: 0.4~6%; and / or Nd2O3: 0.4~6%; and / or Cu2O: 0.5~3%; and / or Pr2O3: 0.4~6%; and / or CeO2: 0.5~3%.

[0113] (73) According to the microcrystalline glass described in any one of (69) or (70), the colorant contains, expressed in weight percentage, the following: NiO: 0.1 to 3%; and / or Ni2O3: 0.1 to 3%.

[0114] (74) According to the microcrystalline glass described in any one of (69) or (70), the colorant contains, expressed in weight percentage, the following: CoO: 0.05~1.8%; and / or Co2O3: 0.05~1.8%.

[0115] (75) According to the microcrystalline glass described in any one of (69) or (70), the colorant contains, expressed in weight percentage, the following: Cu2O: 0.5~3%; and / or CeO2: 0.5~3%.

[0116] (76) According to the microcrystalline glass described in any one of (69) or (70), the colorant contains, expressed in weight percentage, the following: Fe2O3: 0.2~5%, CoO: 0.05~0.3%; or Fe2O3: 0.2~5%, Co2O3: 0.05~0.3%; or Fe2O3: 0.2~5%, CoO: 0.05~0.3%, NiO: 0.1~1%; or Fe2O3: 0.2~5%, Co2O3: 0.05~0.3%, NiO: 0.1~1%.

[0117] (77) According to the microcrystalline glass described in any one of (69) or (70), the colorant contains, expressed in weight percentage, the following: Pr2O3: 0.4~6%; or Fe2O3: 0.2~5%; or MnO2: 0.1~3%; or Er2O3: 0.4~6%; or Nd2O3: 0.4~6%.

[0118] (78) According to the microcrystalline glass described in any one of (69) or (70), the colorant contains, expressed in weight percentage, the following: Er2O3: 0.4~6%, Nd2O3: 0.4~4%, and MnO2: 0.1~2%.

[0119] The present invention also provides a matrix glass.

[0120] The technical solution adopted by the present invention to solve the technical problem is:

[0121] (79) Matrix glass, the components of which, expressed in weight percentage, contain: SiO2: 45-70%; Al2O3: 8-18%; Li2O: 10-25%; ZrO2: 5-15%; P2O5: 2-10%; Y2O3: greater than 0 but less than or equal to 8%.

[0122] (80) The matrix glass according to (79), wherein its components, expressed in weight percentage, further contain: K2O: 0-5%; and / or MgO: 0-2%; and / or ZnO: 0-2%; and / or Na2O: 0-6%; and / or SrO: 0-5%; and / or BaO: 0-5%; and / or CaO: 0-5%; and / or TiO2: 0-5%; and / or B2O3: 0-5%; and / or Ln2O3: 0-5%; and / or clarifier: 0-2%, wherein the Ln2O3 is one or more of La2O3, Gd2O3, and Yb2O3, and the clarifier is one or more of Sb2O3, SnO2, SnO, CeO2, F, Cl, and Br.

[0123] (81) Matrix glass, the components of which are expressed in weight percentages as follows: SiO2: 45-70%; Al2O3: 8-18%; Li2O: 10-25%; ZrO2: 5-15%; P2O5: 2-10%; Y2O3: greater than 0 but less than or equal to 8%; K2O: 0-5%; MgO: 0-2%; ZnO: 0-2%; Na2O: 0-6%; SrO: 0-5%; BaO: 0-5%; CaO: 0-5%; TiO2: 0-5%; B2O3: 0-5%; Ln2O3: 0-5%; and a clarifier: 0-2%, wherein the Ln2O3 is one or more of La2O3, Gd2O3, and Yb2O3, and the clarifier is one or more of Sb2O3, SnO2, SnO, CeO2, F, Cl, and Br.

[0124] (82) The matrix glass according to any one of (79) to (81), wherein the components are expressed in weight percentages, and the content of each component satisfies one or more of the following five conditions:

[0125] 1) Y2O3 / ZrO2 is greater than 0;

[0126] 2) (Li2O+ZrO2+P2O5) / Y2O3 is 2.5 to 50.0;

[0127] 3) Al2O3 / (Li2O+ZrO2+P2O5) is 0.16-0.9;

[0128] 4) Na2O / Y2O3 is less than 6.0;

[0129] 5) Y2O3 / (Al2O3+SiO2) is greater than 0 but less than or equal to 0.15.

[0130] (83) The matrix glass according to any one of (79) to (82), wherein the components are expressed in weight percentage, wherein: SiO2: 50-65%; and / or Al2O3: 8-15%; and / or Li2O: 13-22%; and / or ZrO2: 6-12%; and / or P2O5: 3.5-9%; and / or K2O: 0-4%; and / or MgO: 0-1%; and / or ZnO: 0-1%; and / or Na2O: 1-5%; and / or Y2O3 : 1-7%; and / or SrO: 0-3%; and / or TiO2: 0-3%; and / or BaO: 0-3%; and / or CaO: 0-3%; and / or B2O3: 0-3%; and / or Ln2O3: 0-4%; and / or clarifier: 0-1%, wherein the Ln2O3 is one or more of La2O3, Gd2O3, and Yb2O3, and the clarifier is one or more of Sb2O3, SnO2, SnO, CeO2, F, Cl, and Br.

[0131] (84) The matrix glass according to any one of (79) to (83), wherein the components are expressed in weight percentages, and the content of each component satisfies one or more of the following five conditions:

[0132] 1) Y2O3 / ZrO2 is 0.1 to 1.0;

[0133] 2) (Li2O+ZrO2+P2O5) / Y2O3 is 3.0-40.0;

[0134] 3) Al2O3 / (Li2O+ZrO2+P2O5) is 0.18-0.6;

[0135] 4) Na2O / Y2O3 is 0.1 to 5.0;

[0136] 5)Y2O3 / (Al2O3+SiO2) is 0.01~0.12.

[0137] (85) The matrix glass according to any one of (79) to (84), wherein the components are expressed in weight percentage, wherein: SiO2: 53-63%; and / or Al2O3: 8-12%; and / or Li2O: 14-21%; and / or ZrO2: 7-12%; and / or P2O5: 4-8%; and / or K2O: 0-2%; and / or Y2O3: 2-6%; and / or B2O3: 0-2%; and / or Na2O: 1 .5-4%; and / or SrO: 0-1%; and / or TiO2: 0-1%; and / or BaO: 0-1%; and / or CaO: 0-1%; and / or Ln2O3: 0-3%; and / or clarifier: 0-0.5%, wherein the Ln2O3 is one or more of La2O3, Gd2O3, and Yb2O3, and the clarifier is one or more of Sb2O3, SnO2, SnO, CeO2, F, Cl, and Br.

[0138] (86) The matrix glass according to any one of (79) to (85), wherein the components are expressed in weight percentages, and the content of each component satisfies one or more of the following five conditions:

[0139] 1) Y2O3 / ZrO2 is 0.2-0.6;

[0140] 2) (Li2O+ZrO2+P2O5) / Y2O3 is 4.0-21.0;

[0141] 3) Al2O3 / (Li2O+ZrO2+P2O5) is 0.19-0.5;

[0142] 4) Na2O / Y2O3 is 0.3 to 2.0;

[0143] 5)Y2O3 / (Al2O3+SiO2) is 0.03~0.09.

[0144] (87) The matrix glass according to any one of (79) to (86), wherein its components do not contain SrO; and / or do not contain BaO; and / or do not contain CaO; and / or do not contain ZnO; and / or do not contain PbO; and / or do not contain As2O3; and / or do not contain TiO2; and / or do not contain B2O3; and / or do not contain Ln2O3; and / or do not contain F; and / or do not contain Ta2O5.

[0145] (88) The matrix glass according to any one of (79) to (87), wherein the thermal expansion coefficient of the matrix glass is 50×10 -7 / K~70×10 -7 / K.

[0146] (89) The matrix glass according to any one of (79) to (88), wherein the refractive index of the matrix glass is 1.5600 to 1.5700.

[0147] (90) The matrix glass according to any one of (79) and (80), wherein the matrix glass contains a colorant.

[0148] (91) According to the matrix glass described in (90), the colorant contains, expressed in weight percentage, the following: NiO: 0-4%; and / or Ni2O3: 0-4%; and / or CoO: 0-2%; and / or Co2O3: 0-2%; and / or Fe2O3: 0-7%; and / or MnO2: 0-4%; and / or Er2O3: 0-8%; and / or Nd2O3: 0-8%; and / or Cu2O: 0-4%; and / or Pr2O3: 0-8%; and / or CeO2: 0-4%.

[0149] (92) According to the matrix glass described in any one of (90) or (91), the colorant contains, expressed in weight percentage, the following: NiO: 0.1~4%; and / or Ni2O3: 0.1~4%; and / or CoO: 0.05~2%; and / or Co2O3: 0.05~2%; and / or Fe2O3: 0.2~7%; and / or MnO2: 0.1~4%; and / or Er2O3: 0.4~8%; and / or Nd2O3: 0.4~8%; and / or Cu2O: 0.5~4%; and / or Pr2O3: 0.4~8%; and / or CeO2: 0.5~4%.

[0150] (93) According to the matrix glass described in any one of (90) or (91), the colorant contains, expressed in weight percentage, the following: NiO: 0.1~3%; and / or Ni2O3: 0.1~3%; and / or CoO: 0.05~1.8%; and / or Co2O3: 0.05~1.8%; and / or Fe2O3: 0.2~5%; and / or MnO2: 0.1~3%; and / or Er2O3: 0.4~6%; and / or Nd2O3: 0.4~6%; and / or Cu2O: 0.5~3%; and / or Pr2O3: 0.4~6%; and / or CeO2: 0.5~3%.

[0151] (94) According to the matrix glass described in any one of (90) or (91), the colorant contains, expressed in weight percentage, the following: NiO: 0.1 to 3%; and / or Ni2O3: 0.1 to 3%.

[0152] (95) According to the matrix glass described in any one of (90) or (91), the colorant contains, expressed in weight percentage, the following: CoO: 0.05 to 1.8%; and / or Co2O3: 0.05 to 1.8%.

[0153] (96) According to the matrix glass described in any one of (90) or (91), the colorant contains, expressed in weight percentage, the following: Cu2O: 0.5 to 3%; and / or CeO2: 0.5 to 3%.

[0154] (97) According to the matrix glass described in any one of (90) or (91), the colorant contains, expressed in weight percentage, the following: Fe2O3: 0.2~5%, CoO: 0.05~0.3%; or Fe2O3: 0.2~5%, CoO: 0.05~0.3%; or Fe2O3: 0.2~5%, CoO: 0.05~0.3%, NiO: 0.1~1%; or Fe2O3: 0.2~5%, Co2O3: 0.05~0.3%, NiO: 0.1~1%.

[0155] (98) According to the matrix glass described in any one of (90) or (91), the colorant contains, expressed in weight percentage, the following: Pr2O3: 0.4~6%; or Fe2O3: 0.2~5%; or MnO2: 0.1~3%; or Er2O3: 0.4~6%; or Nd2O3: 0.4~6%.

[0156] (99) According to the matrix glass described in any one of (90) or (91), the colorant contains, expressed in weight percentage, the following: Er2O3: 0.4~6%, Nd2O3: 0.4~4%, and MnO2: 0.1~2%.

[0157] The invention also provides a glass cover plate.

[0158] (100) A glass cover plate comprising the microcrystalline glass product described in any one of (1) to (40), and / or the microcrystalline glass described in any one of (41) to (78), and / or the matrix glass described in any one of (79) to (99).

[0159] The present invention also provides a glass component.

[0160] (101) A glass component comprising the microcrystalline glass product described in any one of (1) to (40), and / or the microcrystalline glass described in any one of (41) to (78), and / or the matrix glass described in any one of (79) to (99).

[0161] The present invention also provides a display device.

[0162] (102) A display device comprising the microcrystalline glass product described in any one of (1) to (40), and / or the microcrystalline glass described in any one of (41) to (78), and / or the matrix glass described in any one of (79) to (99), and / or the glass cover described in (100), and / or the glass component described in (101).

[0163] The present invention also provides an electronic device.

[0164] (103) An electronic device comprising the microcrystalline glass product described in any one of (1) to (40), and / or the microcrystalline glass described in any one of (41) to (78), and / or the matrix glass described in any one of (79) to (99), and / or the glass cover described in (100), and / or the glass component described in (101).

[0165] The present invention also provides a method for manufacturing the microcrystalline glass product.

[0166] (104) A method for manufacturing a glass-ceramic product, the method comprising the following steps:

[0167] Forming a matrix glass, wherein the components of the matrix glass are expressed in weight percentage, including: SiO2: 45-70%; Al2O3: 8-18%; Li2O: 10-25%; ZrO2: 5-15%; P2O5: 2-10%; Y2O3: greater than 0 but less than or equal to 8%;

[0168] The matrix glass is subjected to a crystallization process to form a glass-ceramic, and the glass-ceramic is then subjected to a chemical strengthening process to form a glass-ceramic product.

[0169] (105) According to the method for manufacturing a microcrystalline glass product described in (104), the components of the matrix glass, expressed in weight percentage, further contain: K2O: 0-5%; and / or MgO: 0-2%; and / or ZnO: 0-2%; and / or Na2O: 0-6%; and / or SrO: 0-5%; and / or TiO2: 0-5%; and / or BaO: 0-5%; and / or CaO: 0-5%; and / or B2O3: 0-5%; and / or Ln2O3: 0-5%; and / or a clarifier: 0-2%, wherein the Ln2O3 is one or more of La2O3, Gd2O3, and Yb2O3, and the clarifier is one or more of Sb2O3, SnO2, SnO, CeO2, F, Cl, and Br.

[0170] (106) A method for manufacturing a glass-ceramic product, the method comprising the following steps:

[0171] Forming a matrix glass, the matrix glass comprising, by weight percentage, 45-70% SiO2; 8-18% Al2O3; 10-25% Li2O; 5-15% ZrO2; 2-10% P2O5; greater than 0 but less than or equal to 8% Y2O3; 0-5% K2O; 0-2% MgO; 0-2% ZnO; 0-2% Na2O; 0-6% SrO; 0-5% TiO2; 0-5% BaO; 0-5% CaO; 0-5% B2O3; 0-5% Ln2O3; and 0-2% clarifier, wherein the Ln2O3 is one or more of La2O3, Gd2O3, and Yb2O3, and the clarifier is one or more of Sb2O3, SnO2, SnO, CeO2, F, Cl, and Br.

[0172] The matrix glass is subjected to a crystallization process to form a glass-ceramic, and the glass-ceramic is then subjected to a chemical strengthening process to form a glass-ceramic product.

[0173] (107) According to the method for manufacturing a glass-ceramic product described in any one of (104) to (106), the components of the matrix glass are expressed in weight percentage, and the content of each component satisfies one or more of the following five conditions:

[0174] 1) Y2O3 / ZrO2 is greater than 0;

[0175] 2) (Li2O+ZrO2+P2O5) / Y2O3 is 2.5 to 50.0;

[0176] 3) Al2O3 / (Li2O+ZrO2+P2O5) is 0.16-0.9;

[0177] 4) Na2O / Y2O3 is less than 6.0;

[0178] 5) Y2O3 / (Al2O3+SiO2) is greater than 0 but less than or equal to 0.15.

[0179] (108) According to the method for manufacturing a microcrystalline glass product described in any one of (104) to (107), the components of the matrix glass are expressed in weight percentage, wherein: SiO2: 50 to 65%; and / or Al2O3: 8 to 15%; and / or Li2O: 13 to 22%; and / or ZrO2: 6 to 12%; and / or P2O5: 3.5 to 9%; and / or K2O: 0 to 4%; and / or MgO: 0 to 1%; and / or ZnO: 0 to 1%; and / or Na2O: 1 to 5% ; and / or Y2O3: 1-7%; and / or SrO: 0-3%; and / or TiO2: 0-3%; and / or BaO: 0-3%; and / or CaO: 0-3%; and / or B2O3: 0-3%; and / or Ln2O3: 0-4%; and / or clarifier: 0-1%, wherein the Ln2O3 is one or more of La2O3, Gd2O3, and Yb2O3, and the clarifier is one or more of Sb2O3, SnO2, SnO, CeO2, F, Cl, and Br.

[0180] (109) According to the method for manufacturing a glass-ceramic product described in any one of (104) to (108), the components of the matrix glass are expressed in weight percentage, and the content of each component satisfies one or more of the following five conditions:

[0181] 1) Y2O3 / ZrO2 is 0.1 to 1.0;

[0182] 2) (Li2O+ZrO2+P2O5) / Y2O3 is 3.0-40.0;

[0183] 3) Al2O3 / (Li2O+ZrO2+P2O5) is 0.18-0.6;

[0184] 4) Na2O / Y2O3 is 0.1 to 5.0;

[0185] 5)Y2O3 / (Al2O3+SiO2) is 0.01~0.12.

[0186] (110) According to the method for manufacturing a microcrystalline glass product described in any one of (104) to (109), the components of the matrix glass are expressed in weight percentage, wherein: SiO2: 53-63%; and / or Al2O3: 8-12%; and / or Li2O: 14-21%; and / or ZrO2: 7-12%; and / or P2O5: 4-8%; and / or K2O: 0-2%; and / or Y2O3: 2-6%; and / or B2O3: 0-2%; and and / or Na2O: 1.5-4%; and / or SrO: 0-1%; and / or TiO2: 0-1%; and / or BaO: 0-1%; and / or CaO: 0-1%; and / or Ln2O3: 0-3%; and / or clarifier: 0-0.5%, wherein the Ln2O3 is one or more of La2O3, Gd2O3, and Yb2O3, and the clarifier is one or more of Sb2O3, SnO2, SnO, CeO2, F, Cl, and Br.

[0187] (111) According to the method for manufacturing a glass-ceramic product described in any one of (104) to (110), the components of the matrix glass are expressed in weight percentage, and the content of each component satisfies one or more of the following five conditions:

[0188] 1) Y2O3 / ZrO2 is 0.2-0.6;

[0189] 2) (Li2O+ZrO2+P2O5) / Y2O3 is 4.0-21.0;

[0190] 3) Al2O3 / (Li2O+ZrO2+P2O5) is 0.19-0.5;

[0191] 4) Na2O / Y2O3 is 0.3 to 2.0;

[0192] 5)Y2O3 / (Al2O3+SiO2) is 0.03~0.09.

[0193] (112) According to the method for manufacturing a microcrystalline glass product described in any one of (104) to (111), the components of the matrix glass do not contain SrO; and / or do not contain BaO; and / or do not contain CaO; and / or do not contain ZnO; and / or do not contain PbO; and / or do not contain As2O3; and / or do not contain TiO2; and / or do not contain B2O3; and / or do not contain Ln2O3; and / or do not contain F; and / or do not contain Ta2O5.

[0194] (113) According to the method for manufacturing a microcrystalline glass product described in any one of (104) or (105), the matrix glass contains a colorant.

[0195] (114) According to the method for manufacturing microcrystalline glass products described in (113), the colorant contains, expressed in weight percentage, the following: NiO: 0-4%; and / or Ni2O3: 0-4%; and / or CoO: 0-2%; and / or Co2O3: 0-2%; and / or Fe2O3: 0-7%; and / or MnO2: 0-4%; and / or Er2O3: 0-8%; and / or Nd2O3: 0-8%; and / or Cu2O: 0-4%; and / or Pr2O3: 0-8%; and / or CeO2: 0-4%.

[0196] (115) According to the method for manufacturing a microcrystalline glass product described in any one of (113) and (114), the colorant contains, expressed in weight percentage, the following: NiO: 0.1~4%; and / or Ni2O3: 0.1~4%; and / or CoO: 0.05~2%; and / or Co2O3: 0.05~2%; and / or Fe2O3: 0.2~7%; and / or MnO2: 0.1~4%; and / or Er2O3: 0.4~8%; and / or Nd2O3: 0.4~8%; and / or Cu2O: 0.5~4%; and / or Pr2O3: 0.4~8%; and / or CeO2: 0.5~4%.

[0197] (116) According to the method for manufacturing a microcrystalline glass product described in any one of (113) and (114), the colorant contains, expressed in weight percentage, the following: NiO: 0.1~3%; and / or Ni2O3: 0.1~3%; and / or CoO: 0.05~1.8%; and / or Co2O3: 0.05~1.8%; and / or Fe2O3: 0.2~5%; and / or MnO2: 0.1~3%; and / or Er2O3: 0.4~6%; and / or Nd2O3: 0.4~6%; and / or Cu2O: 0.5~3%; and / or Pr2O3: 0.4~6%; and / or CeO2: 0.5~3%.

[0198] (117) According to the method for manufacturing a microcrystalline glass product described in any one of (113) or (114), the colorant contains, expressed in weight percentage, the following: NiO: 0.1 to 3%; and / or Ni2O3: 0.1 to 3%.

[0199] (118) According to the method for manufacturing a microcrystalline glass product described in any one of (113) or (114), the colorant contains, expressed in weight percentage, the following: CoO: 0.05 to 1.8%; and / or Co2O3: 0.05 to 1.8%.

[0200] (119) According to the method for manufacturing a microcrystalline glass product described in any one of (113) or (114), the colorant contains, expressed in weight percentage, the following: Cu2O: 0.5 to 3%; and / or CeO2: 0.5 to 3%.

[0201] (120) According to the method for manufacturing a microcrystalline glass product described in any one of (113) and (114), the colorant contains, expressed in weight percentage, the following: Fe2O3: 0.2-5%, CoO: 0.05-0.3%; or Fe2O3: 0.2-5%, CoO: 0.05-0.3%; or Fe2O3: 0.2-5%, CoO: 0.05-0.3%, NiO: 0.1-1%; or Fe2O3: 0.2-5%, Co2O3: 0.05-0.3%, NiO: 0.1-1%.

[0202] (121) According to the method for manufacturing a microcrystalline glass product described in any one of (113) and (114), the colorant contains, expressed in weight percentage, the following: Pr2O3: 0.4 to 6%; or Fe2O3: 0.2 to 5%; or MnO2: 0.1 to 3%; or Er2O3: 0.4 to 6%; or Nd2O3: 0.4 to 6%.

[0203] (122) According to the method for manufacturing a microcrystalline glass product described in any one of (113) or (114), the colorant contains, expressed in weight percentage, the following: Er2O3: 0.4~6%, Nd2O3: 0.4~4%, and MnO2: 0.1~2%.

[0204] (123) The method for manufacturing a glass-ceramic product according to any one of (104) to (122), wherein the crystallization process comprises the following steps: heating to a prescribed crystallization temperature, maintaining the temperature for a predetermined period of time after reaching the crystallization temperature, and then cooling. The crystallization temperature is 600 to 750°C, preferably 650 to 700°C, and the holding time at the crystallization temperature is 0 to 8 hours, preferably 1 to 6 hours.

[0205] (124) According to the method for manufacturing a microcrystalline glass product described in any one of (104) to (122), the crystallization process includes the following steps: performing a nucleation process at a first temperature, and then performing a crystal growth process at a second temperature higher than the nucleation process temperature.

[0206] (125) According to the method for manufacturing microcrystalline glass products described in (124), the crystallization process includes the following steps: the first temperature is 470-630°C, and the second temperature is 650-750°C; the holding time at the first temperature is 0-24 hours, preferably 2-15 hours; the holding time at the second temperature is 0-10 hours, preferably 0.5-6 hours.

[0207] (126) According to the manufacturing method of the microcrystalline glass product described in any one of (104) to (125), the chemical strengthening process includes: immersing the microcrystalline glass in a salt bath of molten Na salt at a temperature of 430°C to 470°C for 6 to 20 hours, preferably in the temperature range of 435°C to 460°C, and preferably in the time range of 8 to 13 hours; and / or immersing the microcrystalline glass in a salt bath of molten K salt at a temperature of 400°C to 450°C for 1 to 8 hours, preferably in the time range of 2 to 4 hours.

[0208] (127) According to the method for manufacturing a microcrystalline glass product described in any one of (104) to (126), the crystalline phase of the microcrystalline glass product contains lithium silicate; and / or lithium phosphate.

[0209] (128) According to the method for manufacturing a microcrystalline glass product described in any one of (104) to (127), the crystalline phase of the microcrystalline glass product mainly contains lithium silicate, and lithium silicate has a higher weight percentage than other crystalline phases. Lithium silicate accounts for 10 to 63.5% of the microcrystalline glass product, and preferably 15 to 55%.

[0210] (129) According to the method for manufacturing a microcrystalline glass product described in any one of (104) to (128), the microcrystalline glass product contains a lithium phosphate crystal phase, and the lithium phosphate crystal phase accounts for 3 to 15% by weight of the microcrystalline glass product, preferably 5 to 12%.

[0211] (130) According to the method for manufacturing a microcrystalline glass product described in any one of (104) to (112), the surface stress of the microcrystalline glass product is greater than 600 MPa, preferably greater than 650 MPa, and more preferably greater than 700 MPa.

[0212] (131) According to the method for manufacturing a microcrystalline glass product described in any one of (104) to (112), the four-point bending strength of the microcrystalline glass product is greater than 600 MPa, preferably greater than 650 MPa, and more preferably greater than 700 MPa.

[0213] (132) According to the method for manufacturing a microcrystalline glass product described in any one of (104) to (112), the depth of the ion exchange layer of the microcrystalline glass product is greater than 20 μm, preferably greater than 30 μm, and more preferably greater than 40 μm.

[0214] (133) According to the method for manufacturing a microcrystalline glass product described in any one of (104) to (112), the drop ball test height of the microcrystalline glass product is greater than 1300 mm, preferably greater than 1400 mm, and more preferably greater than 1500 mm.

[0215] (134) The method for manufacturing a glass-ceramic product according to any one of (104) to (112), wherein the fracture toughness of the glass-ceramic product is 1 MPa·m 1 / 2 Above, preferably 1.1 MPa·m 1 / 2 More than 1.2 MPa·m 1 / 2 above

[0216] (135) According to the method for manufacturing a microcrystalline glass product described in any one of (104) to (112), the Vickers hardness of the microcrystalline glass product is 700 kgf / mm 2 Above, preferably 720kgf / mm 2 More than 730kgf / mm 2 above.

[0217] (136) According to the method for manufacturing a microcrystalline glass product described in any one of (104) to (112), the crystallinity of the microcrystalline glass product is greater than 50%, preferably greater than 60%, and more preferably greater than 70%.

[0218] (137) According to the method for manufacturing a microcrystalline glass product described in any one of (104) to (112), the grain size of the microcrystalline glass product is less than 50 nm, preferably less than 40 nm, and more preferably less than 30 nm.

[0219] (138) According to the method for manufacturing a microcrystalline glass product described in any one of (104) to (112), the haze of the microcrystalline glass product with a thickness of less than 1 mm is less than 0.15%, preferably less than 0.12%, and more preferably less than 0.1%.

[0220] (139) According to the method for manufacturing a microcrystalline glass product described in any one of (104) to (112), the average transmittance of the microcrystalline glass product with a thickness of less than 1 mm at a wavelength of 400 to 800 nm is greater than 89%.

[0221] (140) According to the method for manufacturing a microcrystalline glass product described in any one of (104) to (112), the transmittance of the microcrystalline glass product with a thickness of less than 1 mm at a wavelength of 550 nm is greater than 91%.

[0222] (141) According to the method for manufacturing a microcrystalline glass product described in any one of (104) to (112), the average optical |B| value of the microcrystalline glass product with a thickness of less than 1 mm at 400 to 800 nm is less than 0.6, preferably less than 0.55, and more preferably less than 0.5.

[0223] (142) According to the method for manufacturing a microcrystalline glass product described in any one of (138) to (141), the thickness of the microcrystalline glass product is 0.2 to 1 mm, preferably 0.3 to 0.9 mm, more preferably 0.5 to 0.8 mm, and further preferably 0.55 mm or 0.6 mm or 0.68 mm or 0.72 mm or 0.75 mm.

[0224] The present invention also provides a method for manufacturing microcrystalline glass.

[0225] (143) A method for manufacturing glass-ceramics, the method comprising the following steps:

[0226] Forming a matrix glass, wherein the components of the matrix glass are expressed in weight percentage, including: SiO2: 45-70%; Al2O3: 8-18%; Li2O: 10-25%; ZrO2: 5-15%; P2O5: 2-10%; Y2O3: greater than 0 but less than or equal to 8%;

[0227] The matrix glass is crystallized to form glass-ceramics.

[0228] (144) According to the method for manufacturing microcrystalline glass described in (143), the components of the matrix glass, expressed in weight percentage, further contain: K2O: 0-5%; and / or MgO: 0-2%; and / or ZnO: 0-2%; and / or Na2O: 0-6%; and / or SrO: 0-5%; and / or TiO2: 0-5%; and / or BaO: 0-5%; and / or CaO: 0-5%; and / or B2O3: 0-5%; and / or Ln2O3: 0-5%; and / or clarifier: 0-2%, wherein the Ln2O3 is one or more of La2O3, Gd2O3, and Yb2O3, and the clarifier is one or more of Sb2O3, SnO2, SnO, CeO2, F, Cl, and Br.

[0229] (145) A method for manufacturing glass-ceramics, the method comprising the following steps:

[0230] Forming a matrix glass, the matrix glass comprising, by weight percentage, 45-70% SiO2; 8-18% Al2O3; 10-25% Li2O; 5-15% ZrO2; 2-10% P2O5; greater than 0 but less than or equal to 8% Y2O3; 0-5% K2O; 0-2% MgO; 0-2% ZnO; 0-2% Na2O; 0-6% SrO; 0-5% TiO2; 0-5% BaO; 0-5% CaO; 0-5% B2O3; 0-5% Ln2O3; and 0-2% clarifier, wherein the Ln2O3 is one or more of La2O3, Gd2O3, and Yb2O3, and the clarifier is one or more of Sb2O3, SnO2, SnO, CeO2, F, Cl, and Br.

[0231] The matrix glass is crystallized to form glass-ceramics.

[0232] (146) According to the method for manufacturing glass-ceramics described in any one of (143) to (145), the components of the matrix glass are expressed in weight percentage, and the content of each component satisfies one or more of the following five conditions:

[0233] 1) Y2O3 / ZrO2 is greater than 0;

[0234] 2) (Li2O+ZrO2+P2O5) / Y2O3 is 2.5 to 50.0;

[0235] 3) Al2O3 / (Li2O+ZrO2+P2O5) is 0.16-0.9;

[0236] 4) Na2O / Y2O3 is less than 6.0;

[0237] 5) Y2O3 / (Al2O3+SiO2) is greater than 0 but less than or equal to 0.15.

[0238] (147) The method for manufacturing glass-ceramics according to any one of (143) to (146), wherein the components of the matrix glass are expressed in weight percentages, wherein: SiO2: 50-65%; and / or Al2O3: 8-15%; and / or Li2O: 13-22%; and / or ZrO2: 6-12%; and / or P2O5: 3.5-9%; and / or K2O: 0-4%; and / or MgO: 0-1%; and / or ZnO: 0-1%; and / or Na2O: 1-5%; and / or Y2O3: 1-7%; and / or SrO: 0-3%; and / or TiO2: 0-3%; and / or BaO: 0-3%; and / or CaO: 0-3%; and / or B2O3: 0-3%; and / or Ln2O3: 0-4%; and / or clarifier: 0-1%, wherein the Ln2O3 is one or more of La2O3, Gd2O3, and Yb2O3, and the clarifier is one or more of Sb2O3, SnO2, SnO, CeO2, F, Cl, and Br.

[0239] (148) According to the method for manufacturing glass-ceramics described in any one of (143) to (147), the components of the matrix glass are expressed in weight percentage, and the content of each component satisfies one or more of the following five conditions:

[0240] 1) Y2O3 / ZrO2 is 0.1 to 1.0;

[0241] 2) (Li2O+ZrO2+P2O5) / Y2O3 is 3.0-40.0;

[0242] 3) Al2O3 / (Li2O+ZrO2+P2O5) is 0.18-0.6;

[0243] 4) Na2O / Y2O3 is 0.1 to 5.0;

[0244] 5)Y2O3 / (Al2O3+SiO2) is 0.01~0.12.

[0245] (149) According to the method for manufacturing microcrystalline glass described in any one of (143) to (148), the components of the matrix glass are expressed in weight percentage, wherein: SiO2: 53-63%; and / or Al2O3: 8-12%; and / or Li2O: 14-21%; and / or ZrO2: 7-12%; and / or P2O5: 4-8%; and / or K2O: 0-2%; and / or Y2O3: 2-6%; and / or B2O3: 0-2%; and / or or Na2O: 1.5-4%; and / or SrO: 0-1%; and / or TiO2: 0-1%; and / or BaO: 0-1%; and / or CaO: 0-1%; and / or Ln2O3: 0-3%; and / or clarifier: 0-0.5%, wherein the Ln2O3 is one or more of La2O3, Gd2O3, and Yb2O3, and the clarifier is one or more of Sb2O3, SnO2, SnO, CeO2, F, Cl, and Br.

[0246] (150) According to the method for manufacturing glass-ceramics described in any one of (143) to (149), the components of the matrix glass are expressed in weight percentage, and the content of each component satisfies one or more of the following five conditions:

[0247] 1) Y2O3 / ZrO2 is 0.2-0.6;

[0248] 2) (Li2O+ZrO2+P2O5) / Y2O3 is 4.0-21.0;

[0249] 3) Al2O3 / (Li2O+ZrO2+P2O5) is 0.19-0.5;

[0250] 4) Na2O / Y2O3 is 0.3 to 2.0;

[0251] 5)Y2O3 / (Al2O3+SiO2) is 0.03~0.09.

[0252] (151) According to the method for manufacturing microcrystalline glass described in any one of (143) to (150), the components of the matrix glass do not contain SrO; and / or do not contain BaO; and / or do not contain CaO; and / or do not contain ZnO; and / or do not contain PbO; and / or do not contain As2O3; and / or do not contain TiO2; and / or do not contain B2O3; and / or do not contain Ln2O3; and / or do not contain F; and / or do not contain Ta2O5.

[0253] (152) According to the method for manufacturing microcrystalline glass described in any one of (143) or (144), the matrix glass contains a colorant.

[0254] (153) According to the method for manufacturing microcrystalline glass described in (152), the colorant contains, expressed in weight percentage, the following: NiO: 0~4%; and / or Ni2O3: 0~4%; and / or CoO: 0~2%; and / or Co2O3: 0~2%; and / or Fe2O3: 0~7%; and / or MnO2: 0~4%; and / or Er2O3: 0~8%; and / or Nd2O3: 0~8%; and / or Cu2O: 0~4%; and / or Pr2O3: 0~8%; and / or CeO2: 0~4%.

[0255] (154) According to the method for manufacturing microcrystalline glass described in any one of (152) or (153), the colorant contains, expressed in weight percentage, the following: NiO: 0.1~4%; and / or Ni2O3: 0.1~4%; and / or CoO: 0.05~2%; and / or Co2O3: 0.05~2%; and / or Fe2O3: 0.2~7%; and / or MnO2: 0.1~4%; and / or Er2O3: 0.4~8%; and / or Nd2O3: 0.4~8%; and / or Cu2O: 0.5~4%; and / or Pr2O3: 0.4~8%; and / or CeO2: 0.5~4%.

[0256] (155) According to the method for manufacturing microcrystalline glass described in any one of (152) and (153), the colorant contains, expressed in weight percentage, the following: NiO: 0.1~3%; and / or Ni2O3: 0.1~3%; and / or CoO: 0.05~1.8%; and / or Co2O3: 0.05~1.8%; and / or Fe2O3: 0.2~5%; and / or MnO2: 0.1~3%; and / or Er2O3: 0.4~6%; and / or Nd2O3: 0.4~6%; and / or Cu2O: 0.5~3%; and / or Pr2O3: 0.4~6%; and / or CeO2: 0.5~3%.

[0257] (156) According to the method for manufacturing microcrystalline glass described in any one of (152) or (153), the colorant contains, expressed in weight percentage, the following: NiO: 0.1~3%; and / or Ni2O3: 0.1~3%.

[0258] (157) According to the method for manufacturing microcrystalline glass described in any one of (152) or (153), the colorant contains, expressed in weight percentage, the following: CoO: 0.05~1.8%; and / or Co2O3: 0.05~1.8%.

[0259] (158) According to the method for manufacturing microcrystalline glass described in any one of (152) or (153), the colorant contains, expressed in weight percentage, the following: Cu2O: 0.5~3%; and / or CeO2: 0.5~3%.

[0260] (159) According to the method for manufacturing microcrystalline glass described in any one of (152) or (153), the colorant contains, expressed in weight percentage, the following: Fe2O3: 0.2~5%, CoO: 0.05~0.3%; or Fe2O3: 0.2~5%, Co2O3: 0.05~0.3%; or Fe2O3: 0.2~5%, CoO: 0.05~0.3%, NiO: 0.1~1%; or Fe2O3: 0.2~5%, Co2O3: 0.05~0.3%, NiO: 0.1~1%.

[0261] (160) According to the method for manufacturing microcrystalline glass described in any one of (152) or (153), the colorant contains, expressed in weight percentage, the following: Pr2O3: 0.4~6%; or Fe2O3: 0.2~5%; or MnO2: 0.1~3%; or Er2O3: 0.4~6%; or Nd2O3: 0.4~6%.

[0262] (161) According to the method for manufacturing microcrystalline glass described in any one of (152) or (153), the colorant contains, expressed in weight percentage, the following: Er2O3: 0.4~6%, Nd2O3: 0.4~4%, and MnO2: 0.1~2%.

[0263] (162) The method for manufacturing glass-ceramics according to any one of (143) to (161), wherein the crystallization process comprises the following steps: heating to a prescribed crystallization temperature, maintaining the temperature for a predetermined period of time after reaching the crystallization temperature, and then cooling. The crystallization temperature is 600 to 750°C, preferably 650 to 700°C, and the holding time at the crystallization temperature is 0 to 8 hours, preferably 1 to 6 hours.

[0264] (163) According to the method for manufacturing microcrystalline glass described in any one of (143) to (161), the crystallization process includes the following steps: performing a nucleation process at a first temperature, and then performing a crystal growth process at a second temperature higher than the nucleation process temperature.

[0265] (164) According to the method for manufacturing microcrystalline glass described in (163), the crystallization process includes the following steps: the first temperature is 470-630°C, and the second temperature is 650-750°C; the holding time at the first temperature is 0-24 hours, preferably 2-15 hours; the holding time at the second temperature is 0-10 hours, preferably 0.5-6 hours.

[0266] (165) According to the method for manufacturing microcrystalline glass described in any one of (143) to (164), the crystalline phase of the microcrystalline glass contains lithium silicate; and / or lithium phosphate.

[0267] (166) According to the method for manufacturing microcrystalline glass described in any one of (143) to (165), the crystalline phase of the microcrystalline glass mainly contains lithium silicate, and lithium silicate has a higher weight percentage than other crystalline phases. Lithium silicate accounts for 10 to 63.5% of the microcrystalline glass, and preferably 15 to 55%.

[0268] (167) According to the method for manufacturing microcrystalline glass described in any one of (143) to (166), the microcrystalline glass contains a lithium phosphate crystal phase, and the lithium phosphate crystal phase accounts for 3 to 15% by weight of the microcrystalline glass, preferably 5 to 12%.

[0269] (168) According to the method for manufacturing microcrystalline glass described in any one of (143) to (151), the crystallinity of the microcrystalline glass is greater than 50%, preferably greater than 60%, and more preferably greater than 70%.

[0270] (169) The method for manufacturing a glass-ceramic according to any one of (143) to (151), wherein the glass-ceramic has a grain size of 50 nm or less, preferably 40 nm or less, and more preferably 30 nm or less; and / or a thermal expansion coefficient of 75 to 95 × 10 -7 / K.

[0271] (170) According to the method for manufacturing microcrystalline glass described in any one of (143) to (151), the refractive index of the microcrystalline glass is 1.5700 to 1.5800.

[0272] (171) According to the method for manufacturing microcrystalline glass described in any one of (143) to (151), the ball drop height of the microcrystalline glass body is greater than 1000 mm, preferably greater than 1100 mm, and more preferably greater than 1200 mm.

[0273] (172) According to the method for manufacturing microcrystalline glass described in any one of (143) to (151), the Vickers hardness of the microcrystalline glass is 650 kgf / mm 2 Above, preferably 680kgf / mm 2 More than 700 kgf / mm 2 above.

[0274] (173) According to the method for manufacturing microcrystalline glass described in any one of (143) to (151), the haze of microcrystalline glass with a thickness of less than 1 mm is less than 0.15%, preferably less than 0.12%, and more preferably less than 0.1%.

[0275] (174) According to the method for manufacturing microcrystalline glass described in any one of (143) to (151), the average transmittance of microcrystalline glass with a thickness of less than 1 mm at a wavelength of 400 to 800 nm is greater than 89%.

[0276] (175) According to the method for manufacturing microcrystalline glass described in any one of (143) to (151), the transmittance of microcrystalline glass with a thickness of less than 1 mm at a wavelength of 550 nm is greater than 91%.

[0277] (176) According to the method for manufacturing microcrystalline glass described in any one of (143) to (151), the average optical |B| value of 400 to 800 nm of microcrystalline glass with a thickness of less than 1 mm is less than 0.6, preferably less than 0.55, and more preferably less than 0.5.

[0278] (177) According to the method for manufacturing microcrystalline glass described in any one of (173) to (176), the thickness of the microcrystalline glass is 0.2 to 1 mm, preferably 0.3 to 0.9 mm, more preferably 0.5 to 0.8 mm, and further preferably 0.55 mm or 0.6 mm or 0.68 mm or 0.72 mm or 0.75 mm.

[0279] The beneficial effects of the present invention are as follows: through reasonable component design, the microcrystalline glass and microcrystalline glass products obtained by the present invention have excellent mechanical and optical properties, and are suitable for electronic equipment or display equipment. DETAILED DESCRIPTION

[0280] The glass-ceramics and glass-ceramics products of the present invention are materials having a crystalline phase and a glass phase, which are different from amorphous solids. The crystalline phase of the glass-ceramics and glass-ceramics products can be identified by the peak angles appearing in the X-ray diffraction pattern of X-ray diffraction analysis and / or measured by TEMEDX.

[0281] After repeated experiments and research, the inventors of the present invention obtained the microcrystalline glass or microcrystalline glass products of the present invention at a lower cost by specifying the content and content ratio of the specific components constituting microcrystalline glass and microcrystalline glass products to specific values and precipitating specific crystalline phases.

[0282] The following describes the scope of each component (ingredient) of the matrix glass, microcrystalline glass, and microcrystalline glass products of the present invention. In this specification, unless otherwise specified, the content of each component is expressed as a weight percentage (wt%) relative to the total amount of the matrix glass, microcrystalline glass, or microcrystalline glass product material converted into an oxide composition. Here, the "composition converted into oxides" refers to the case where oxides, composite salts, hydroxides, etc. used as raw materials for the matrix glass, microcrystalline glass, or microcrystalline glass product components of the present invention decompose and transform into oxides when melted, and the total amount of the oxide material is taken as 100%. In addition, in this specification, when it is simply referred to as glass, it is the matrix glass before crystallization, the matrix glass after crystallization is referred to as microcrystalline glass, and the microcrystalline glass product refers to the microcrystalline glass after chemical strengthening.

[0283] Unless otherwise indicated in specific circumstances, the numerical ranges listed herein include upper and lower limits, and "above" and "below" include the endpoint values, as well as all integers and fractions within the range, without limitation to the specific values listed when defining the range. The term "about" as used herein means that the formula, parameters and other quantities and features are not and do not need to be exact, and may be approximate and / or larger or lower if necessary, reflecting tolerances, conversion factors and measurement errors, etc. "and / or" as used herein is inclusive, for example, "A; and / or B" means only A, or only B, or both A and B.

[0284] In the glass-ceramics and glass-ceramics products of the present invention, the crystalline phase contains lithium silicate and / or lithium phosphate.

[0285] In some embodiments of the present invention, the crystalline phase in the microcrystalline glass or microcrystalline glass products mainly contains a lithium silicate crystalline phase, which has a higher weight percentage than other crystalline phases. The lithium silicate crystalline phase accounts for 10 to 63.5% of the microcrystalline glass or microcrystalline glass products. In some embodiments, the weight percentage range is 15 to 55%.

[0286] In some embodiments of the present invention, the crystalline phase in the microcrystalline glass or microcrystalline glass products contains a lithium phosphate crystalline phase, and the weight percentage of the microcrystalline phase of the microcrystalline glass or microcrystalline glass products is in the range of 3 to 15%. In some embodiments, the weight percentage is in the range of 5 to 12%.

[0287] SiO2 is an essential component of the glass of the present invention and one of the main components that form crystals after heat treatment. If the SiO2 content is below 45%, crystal formation in the glass is difficult. Therefore, the lower limit of the SiO2 content is 45%, preferably 50%, and more preferably 53%. If the SiO2 content is above 70%, it is not conducive to glass forming and affects the haze and |B| value of the glass-ceramic and glass-ceramic products. Therefore, the upper limit of the SiO2 content is 70%, preferably 65%, and more preferably 63%. In some embodiments, the SiO2 content may include approximately 45%, 46%, 47%, 48%, 49%, 50%, 51%, 52%, 53%, 54%, 55%, 56%, 57%, 58%, 59%, 60%, 61%, 62%, 63%, 64%, 65%, 66%, 67%, 68%, 69%, or 70%.

[0288] Al2O3 can form a glass network structure, facilitating glass formation and lowering the glass crystallization temperature, thus promoting glass crystallization. Al2O3 is one of the components that form glass-ceramics crystals, facilitating chemical strengthening of glass-ceramics and increasing the depth of the ion exchange layer of glass-ceramics products. However, if its content is less than 8%, these effects are not achieved effectively. Therefore, the lower limit of the Al2O3 content is 8%. On the other hand, if the Al2O3 content exceeds 18%, it affects the size of the glass-ceramics fragments after chemical strengthening. Therefore, the upper limit of the Al2O3 content is 18%, preferably 15%, and more preferably 12%. In some embodiments, the Al2O3 content may include approximately 8%, 8.5%, 9%, 9.5%, 10%, 10.5%, 11%, 11.5%, 12%, 12.5%, 13%, 13.5%, 14%, 14.5%, 15%, 15.5%, 16%, 16.5%, 17%, 17.5%, or 18%.

[0289] Li2O can promote glass melting and lower the melting temperature. It is the main component of crystal formation and is also the main component that replaces sodium and potassium ions in chemical strengthening treatment. It can increase the surface stress of microcrystalline glass products after chemical strengthening and improve the drop height of microcrystalline glass products. However, if its content is less than 10%, the crystal phase of lithium silicate formed is not good, which affects the drop height and fragment size of microcrystalline glass products. Therefore, the lower limit of Li2O content is 10%, preferably 13%, and more preferably 14%. On the other hand, if too much Li2O is contained, the glass is prone to phase separation during crystallization, affecting the transmittance of microcrystalline glass and microcrystalline glass products. Therefore, the upper limit of Li2O content is 25%, preferably 22%, and more preferably 21%. In some embodiments, about 10%, 10.5%, 11%, 11.5%, 12%, 12.5%, 13%, 13.5%, 14%, 14.5%, 15%, 15.5%, 16%, 16.5%, 17%, 17.5%, 18%, 18.5%, 19%, 19.5%, 20%, 20.5%, 21%, 21.5%, 22%, 22.5%, 23%, 23.5%, 24%, 24.5%, 25% Li2O may be included.

[0290] Na2O is an optional component that can lower the melting temperature of the glass and is beneficial to the adjustment of the chemical strengthening process of the glass or glass-ceramics. Therefore, the lower limit of the Na2O content in the present invention is preferably 1%, and more preferably 1.5%. On the other hand, if the glass contains too much Na2O, it will cause the glass to phase separate, resulting in a decrease in the transmittance of the glass-ceramics and glass-ceramics products after crystallization. Therefore, the upper limit of the Na2O content is 6%, preferably 5%, and more preferably 4%. In some embodiments, the Na2O content may include about 0%, greater than 0%, 0.1%, 0.5%, 1%, 1.5%, 2%, 2.5%, 3%, 3.5%, 4%, 4.5%, 5%, 5.5%, or 6%.

[0291] K2O facilitates glass forming and reduces glass viscosity. However, excessive K2O can lead to decreased chemical stability and hardness. Therefore, the upper limit of the K2O content is 5%, preferably 4%, and more preferably 2%. In some embodiments, the K2O content may be approximately 0%, greater than 0%, 0.1%, 0.5%, 1%, 1.5%, 2.0%, 2.5%, 3.0%, 3.5%, 4.0%, 4.5%, or 5.0%.

[0292] P2O5 can form crystal nuclei during the glass crystallization process, promote crystal formation, improve the crystallinity of microcrystalline glass or microcrystalline glass products, facilitate chemical strengthening, and increase the hardness, ball drop height, and flexural strength of microcrystalline glass products. The lower limit of the P2O5 content is 2%, preferably 3.5%, and more preferably 4%. However, if P2O5 is contained in excess, it can easily lead to phase separation of the glass and reduce the chemical stability of the glass. Therefore, the upper limit of the P2O5 content is 10%, preferably 9%, and more preferably 8%. In some embodiments, the P2O5 content may be approximately 2.0%, 2.5%, 3.0%, 3.5%, 4.0%, 4.5%, 5.0%, 5.5%, 6.0%, 6.5%, 7.0%, 7.5%, 8.0%, 8.5%, 9.0%, 9.5%, or 10%.

[0293] ZrO2 and P2O5 are mutually soluble, reducing P2O5 phase separation during glass molding and raising the crystallization temperature of the glass during crystallization. This ensures the integrity of the lithium silicate crystalline phase in the glass-ceramics and glass-ceramics products, reduces the haze and |B| value of the glass-ceramics and glass-ceramics products, and improves the drop resistance of the glass-ceramics products. Therefore, the lower limit of the ZrO2 content is 5%, preferably 6%, and more preferably 7%. On the other hand, excessive ZrO2 content makes glass melting difficult, so the upper limit of the ZrO2 content is 15%, preferably 12%. In some embodiments, ZrO2 may be included at about 5.0%, 5.5%, 6.0%, 6.5%, 7.0%, 7.5%, 8.0%, 8.5%, 9.0%, 9.5%, 10.0%, 10.5%, 11.0%, 11.5%, 12%, 12.5%, 13.0%, 13.5%, 14.0%, 14.5%, 15.0%.

[0294] Y2O3 can promote the melting of ZrO2, reduce the difficulty of glass melting, reduce phase separation in the glass, and lower the haze and |B| value of glass-ceramics and glass-ceramics products. The lower limit of the Y2O3 content is greater than 0%, preferably 1%, and more preferably 2%. On the other hand, if the Y2O3 content is too high, crystal formation during glass crystallization is difficult, and the crystallinity of the glass-ceramics and glass-ceramics products decreases. Therefore, the upper limit of the Y2O3 content is 8%, preferably 7%, and more preferably 6%. In some embodiments, the Y2O3 content may be greater than approximately 0%, 0.1%, 0.5%, 1.0%, 1.5%, 2.0%, 2.5%, 3.0%, 3.5%, 4.0%, 4.5%, 5.0%, 5.5%, 6.0%, 6.5%, 7.0%, 7.5%, or 8.0%.

[0295] The inventors have discovered through extensive experimental research that, in some embodiments, the relative contents of Y2O3 and ZrO2 have a significant impact on the haze and |B| value of glass-ceramics and glass-ceramics products. In particular, a Y2O3 / ZrO2 ratio greater than 0 can reduce the haze and |B| value of glass-ceramics and glass-ceramics products, improving the photographic and imaging qualities of the end products. Therefore, a Y2O3 / ZrO2 ratio greater than 0 is preferred, a Y2O3 / ZrO2 ratio of 0.1 to 1.0 is more preferred, and a Y2O3 / ZrO2 ratio of 0.2 to 0.6 is even more preferred. In some embodiments, the value of Y2O3 / ZrO2 may be greater than 0, 0.05, 0.1, 0.15, 0.2, 0.25, 0.3, 0.35, 0.4, 0.45, 0.5, 0.55, 0.6, 0.65, 0.7, 0.75, 0.8, 0.85, 0.9, 0.95, or 1.0.

[0296] In some embodiments of the present invention, setting the (Li2O+ZrO2+P2O5) / Y2O3 ratio within the range of 2.5 to 50.0 can refine the grains of the matrix glass during crystallization, resulting in finer grains for the glass-ceramics and glass-ceramics products, and reducing the haze of the glass-ceramics and glass-ceramics products. Therefore, the (Li2O+ZrO2+P2O5) / Y2O3 ratio is preferably 2.5 to 50.0, more preferably 3.0 to 40.0, and even more preferably 4.0 to 21.0. In some embodiments, the value of (Li2O+ZrO2+P2O5) / Y2O3 may be 2.5, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0, 9.0, 10.0, 11.0, 12.0, 13.0, 14.0, 15.0, 16.0, 17.0, 18.0, 19.0, 20.0, 21.0, 22.0, 23.0 , 24.0, 25.0, 26.0, 27.0, 28.0, 29.0, 30.0, 31.0, 32.0, 33.0, 34.0, 35.0, 36.0, 37.0, 38.0, 39.0, 40.0, 41.0, 42.0, 43.0, 44.0, 45.0, 46.0, 47.0, 48.0, 49.0, 50.0.

[0297] During extensive experimental research, the inventors discovered that by controlling the ratio of Al2O3 to P2O5, Li2O, and ZrO2 (Li2O+ZrO2+P2O5) within the range of 0.16 to 0.9, the glass-ceramic product can withstand a falling ball impact of 1300 mm or more. More preferably, Al2O3 / (Li2O+ZrO2+P2O5) is 0.18 to 0.6. Furthermore, in some embodiments, it is more preferred that Al2O3 / (Li2O+ZrO2+P2O5) is within the range of 0.19 to 0.5, which makes it easier to form a lithium silicate crystal phase and the glass-ceramic product more likely to obtain excellent fracture toughness, which can be 1 MPa·m 1 / 2 Above, preferably 1.1 MPa·m 1 / 2 More than 1.2 MPa·m 1 / 2while further optimizing the drop ball test height bearing capacity, and therefore further preferably Al2O3 / (Li2O + ZrO2 + P2O5) is 0.19 ~ 0.5. In some embodiments, Al2O3 / (Li2O + ZrO2 + P2O5) may be 0.16, 0.17, 0.18, 0.19, 0.2, 0.21, 0.22, 0.23, 0.24, 0.25, 0.26, 0.27, 0.28, 0.29, 0.30, 0.31, 0.32, 0.33, 0.34, 0.35, 0.36, 0.37, 0.38, 0.39, 0.40, 0.41, 0.42, 0.43, 0.44, 0.45, 0.46, 0.47, 0.48, 0.49, 0.50, 0.55, 0.60, 0.65, 0.70, 0.75, 0.80, 0.85, or 0.90.

[0298] The inventors have found through extensive experimental research that the relative content of Na2O and Y2O3 has a significant impact on the surface stress and ion exchange layer depth of microcrystalline glass products. In particular, a Na2O / Y2O3 ratio of 6.0 or less can increase the surface stress and ion exchange layer depth of microcrystalline glass products, and a Na2O / Y2O3 ratio of 0.1 to 5.0 is more preferred. In some embodiments, a Na2O / Y2O3 ratio of 0.3 to 2.0 is further preferred, which can also improve the fragment size of microcrystalline glass products. In some embodiments, the surface stress of microcrystalline glass products is greater than 600 MPa, preferably greater than 650 MPa, and more preferably greater than 700 MPa; the ion exchange layer depth of microcrystalline glass products is greater than 20 μm, preferably greater than 30 μm, and more preferably greater than 40 μm. In some embodiments, the value of Na2O / Y2O3 can be 0, greater than 0, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1.0, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9, 2.0, 2.3, 2.5, 2.7, 3.0, 3.3, 3.5, 3.7, 4.0, 4.3, 4.5, 4.7, 5.0, 5.3, 5.5, 5.7, 6.0.

[0299] In some embodiments of the present invention, when the content ratio Y2O3 / (Al2O3+SiO2) of the total content of Y2O3 and Al2O3 and SiO2 (Al2O3+SiO2) is controlled to be greater than 0 but less than or equal to 0.15, the crystallization performance of the glass can be optimized, so that the microcrystalline glass and microcrystalline glass products have an appropriate amount of crystallinity, thereby making the microcrystalline glass and microcrystalline glass products have excellent performance; preferably, Y2O3 / (Al2O3+SiO2) is 0.01~0.12, more preferably 0.03~0.09, and the drop ball test height of the microcrystalline glass and microcrystalline glass products becomes larger. In some embodiments, the drop ball test height of the microcrystalline glass products is preferably above 1300 mm, more preferably above 1400 mm, and further preferably above 1500 mm. In some embodiments, the value of Y2O3 / (Al2O3+SiO2) may be greater than 0, 0.01, 0.02, 0.03, 0.04, 0.05, 0.06, 0.07, 0.08, 0.09, 0.1, 0.11, 0.12, 0.13, 0.14, or 0.15.

[0300] B2O3 can improve the network structure of glass, optimize the chemical strengthening properties of glass and glass-ceramics, and increase the drop height of glass-ceramics products. When the B2O3 content exceeds 5%, it is not conducive to glass molding and is prone to crystallization during molding. Therefore, the upper limit of the B2O3 content is 5%, preferably 3%, more preferably 2%, and even more preferably no B2O3. In some embodiments, the B2O3 content may be about 0%, greater than 0%, 0.1%, 0.5%, 1.0%, 1.5%, 2.0%, 2.5%, 3.0%, 3.5%, 4.0%, 4.5%, or 5.0%.

[0301] ZnO can reduce the difficulty of glass melting, but high ZnO content can promote low-temperature crystallization of the glass, reduce the crystallinity and transmittance of the glass-ceramics and glass-ceramics products, and increase the haze of the glass-ceramics and glass-ceramics products. Therefore, its content is limited to 2%, preferably 1%, and more preferably, it is ZnO-free. In some embodiments, ZnO may be included in an amount of approximately 0%, greater than 0%, 0.1%, 0.5%, 1.0%, 1.5%, or 2.0%.

[0302] MgO can reduce the difficulty of glass melting and help increase the drop height of glass-ceramics and glass-ceramics products. However, it tends to promote low-temperature crystallization of the glass, reducing the crystallinity and transmittance of the glass-ceramics and glass-ceramics products. Therefore, its content is limited to 2%, preferably 1%. In some embodiments, the MgO content may be approximately 0%, greater than 0%, 0.1%, 0.5%, 1.0%, 1.5%, or 2.0%.

[0303] SrO is an optional component that improves the low-temperature melting property of glass and inhibits crystallization during glass molding. Excessive SrO content can affect glass molding and increase the likelihood of crystallization during molding. Therefore, the SrO content in the present invention ranges from 0 to 5%, preferably from 0 to 3%, more preferably from 0 to 1%, and even more preferably, is absent. In some embodiments, SrO may be present in an amount of approximately 0%, greater than 0%, 0.1%, 0.5%, 1.0%, 1.5%, 2.0%, 2.5%, 3.0%, 3.5%, 4.0%, 4.5%, or 5.0%.

[0304] BaO is an optional component that helps improve the glass-forming properties of the glass. Excessive BaO content can hinder glass forming. Therefore, the BaO content of the present invention ranges from 0 to 5%, preferably from 0 to 3%, more preferably from 0 to 1%, and even more preferably, it is absent. In some embodiments, BaO may be present in an amount of approximately 0%, greater than 0%, 0.1%, 0.5%, 1.0%, 1.5%, 2.0%, 2.5%, 3.0%, 3.5%, 4.0%, 4.5%, or 5.0%.

[0305] CaO can increase the hardness of glass, but excessive CaO content can cause the glass to milky during molding. Therefore, the CaO content in the present invention is in the range of 0-5%, preferably 0-3%, more preferably 0-1%, and even more preferably, no CaO. In some embodiments, the glass may contain approximately 0%, greater than 0%, 0.1%, 0.5%, 1.0%, 1.5%, 2.0%, 2.5%, 3.0%, 3.5%, 4.0%, 4.5%, or 5.0% CaO.

[0306] TiO2 is an optional component that helps lower the melting temperature of the matrix glass and improve its chemical stability. The present invention contains less than 5% TiO2 to facilitate control of the matrix glass crystallization process. Preferably, the content is less than 3%, and more preferably, less than 1%. In some embodiments, TiO2 is further preferably absent. In some embodiments, TiO2 may be present in an amount of approximately 0%, greater than 0%, 0.1%, 0.3%, 0.5%, 1%, 1.5%, 2%, 2.5%, 3%, 3.5%, 4%, 4.5%, or 5%.

[0307] Ln2O3 (Ln2O3 is one or more of La2O3, Gd2O3, and Yb2O3) is an optional component that improves the hardness and chemical stability of glass-ceramics and inhibits glass forming and crystallization. When its content is too high, it will affect the chemical strengthening properties of the glass and reduce the strength of glass-ceramics products. Therefore, the content of Ln2O3 in the present invention is in the range of 0 to 5%, preferably 0 to 4%, more preferably 0 to 3%, and further preferably does not contain Ln2O3. In some embodiments, about 0%, greater than 0%, 0.1%, 0.5%, 1.0%, 1.5%, 2.0%, 2.5%, 3.0%, 3.5%, 4.0%, 4.5%, and 5.0% of Ln2O3 may be included.

[0308] In some embodiments, the glass, glass-ceramic, or glass-ceramic product may further include 0-2% of a fining agent to enhance the defoaming ability of the glass, glass-ceramic, or glass-ceramic product. Such fining agents include, but are not limited to, one or more of Sb2O3, SnO2, SnO, CeO2, F, Cl, and Br, with Sb2O3 being preferred. When these fining agents are present alone or in combination, the upper limit of their content is preferably 1%, more preferably 0.5%. In some embodiments, the content of one or more of these fining agents is approximately 0%, 0.1%, 0.2%, 0.3%, 0.4%, 0.5%, 0.6%, 0.7%, 0.8%, 0.9%, 1.0%, 1.1%, 1.2%, 1.3%, 1.4%, 1.5%, 1.6%, 1.7%, 1.8%, 1.9%, or 2.0%.

[0309] In order to enable the glass, microcrystalline glass or microcrystalline glass product of the present invention to obtain the desired excellent properties such as mechanical properties, optical properties, production performance and chemical strengthening properties, in some embodiments of the present invention, it is preferred not to contain F; and / or not contain Ta2O5.

[0310] PbO and As2O3 are toxic substances, and even adding a small amount thereof does not meet the requirements of environmental protection. Therefore, in some embodiments of the present invention, it is preferred that PbO and As2O3 are not contained.

[0311] In some embodiments of the present invention, colored matrix glass, glass-ceramics, or glass-ceramics products can be prepared by including a colorant, allowing the matrix glass, glass-ceramics, or glass-ceramics products to exhibit different colors. The colorant includes: NiO: 0-4%; and / or Ni2O3: 0-4%; and / or CoO: 0-2%; and / or Co2O3: 0-2%; and / or Fe2O3: 0-7%; and / or MnO2: 0-4%; and / or Er2O3: 0-8%; and / or Nd2O3: 0-8%; and / or Cu2O: 0-4%; and / or Pr2O5: 0-8%; and / or CeO2: 0-4%. The weight percentage content of the colorant and its function are detailed as follows:

[0312] The brown or green matrix glass, glass-ceramic, or glass-ceramic product prepared by the present invention uses NiO, Ni2O3, or Pr2O5 as a colorant. NiO and Ni2O3 are used as colorants to prepare the brown or green matrix glass, glass-ceramic, or glass-ceramic product. The two components can be used alone or in combination. Their respective content is generally 4% or less, preferably 3% or less. If the content exceeds 4%, the colorant will not dissolve well in the matrix glass, glass-ceramic, or glass-ceramic product. The lower limit of their respective content is 0.1% or more. If it is less than 0.1%, the color of the matrix glass, glass-ceramic, or glass-ceramic product will not be obvious. In some embodiments, NiO or Ni2O3 may be included in an amount of about 0.1%, 0.2%, 0.3%, 0.4%, 0.5%, 0.6%, 0.7%, 0.8%, 0.9%, 1.0%, 1.1%, 1.2%, 1.3%, 1.4%, 1.5%, 1.6%, 1.7%, 1.8%, 1.9%, 2.0%, 2.1%, 2.2%, 2.3%, 2.4%, 2.5%, 2.6%, 2.7%, 2.8%, 2.9%, 3.0%, 3.1%, 3.2%, 3.3%, 3.4%, 3.5%, 3.6%, 3.7%, 3.8%, 3.9%, or 4.0%. When used in combination, the total amount of NiO and Ni2O3 is generally less than 4%, and the lower limit of the total amount is greater than 0.1%. In some embodiments, about 0.1%, 0.2%, 0.3%, 0.4%, 0.5%, 0.6%, 0.7%, 0.8%, 0.9%, 1.0%, 1.1%, 1.2%, 1.3%, 1.4%, 1.5%, 1.6%, 1.7%, 1.8%, 1.9%, 2.0%, 2.1%, 2.2%, 2.3%, 2.4%, 2.5%, 2.6%, 2.7%, 2.8%, 2.9%, 3.0%, 3.1%, 3.2%, 3.3%, 3.4%, 3.5%, 3.6%, 3.7%, 3.8%, 3.9%, 4.0% NiO and Ni2O3 may be included. Pr2O5 is used as a colorant for green matrix glass, microcrystalline glass or microcrystalline glass products. It is used alone, and the general content is less than 8%, preferably less than 6%, and the lower limit of the content is above 0.4%. If it is less than 0.4%, the color of the matrix glass, microcrystalline glass or microcrystalline glass products will not be obvious.In some embodiments, the Pr2O5 may be included at about 0.4%, 0.6%, 0.8%, 1.0%, 1.2%, 1.4%, 1.6%, 1.8%, 2.0%, 2.2%, 2.4%, 2.6%, 2.8%, 3.0%, 3.2%, 3.4%, 3.6%, 3.8%, 4.0%, 4.2%, 4.4%, 4.6%, 4.8%, 5.0%, 5.2%, 5.4%, 5.6%, 5.8%, 6.0%, 6.2%, 6.4%, 6.6%, 6.8%, 7.0%, 7.2%, 7.4%, 7.6%, 7.8%, 8.0%.

[0313] The blue matrix glass, glass-ceramic, or glass-ceramic product prepared by the present invention uses CoO or Co2O3 as a colorant. The two colorant components can be used alone or in combination. The content of each is generally less than 2%, preferably less than 1.8%. If the content exceeds 2%, the colorant cannot be well dissolved in the matrix glass, glass-ceramic, or glass-ceramic product. The lower limit of each content is above 0.05%. If it is less than 0.05%, the color of the matrix glass, glass-ceramic, or glass-ceramic product is not obvious. In some embodiments, the CoO or Co2O3 content can be about 0.05%, 0.1%, 0.2%, 0.3%, 0.4%, 0.5%, 0.6%, 0.7%, 0.8%, 0.9%, 1.0%, 1.1%, 1.2%, 1.3%, 1.4%, 1.5%, 1.6%, 1.7%, 1.8%, 1.9%, or 2.0%. When used in combination, the total amount of CoO and Co2O3 does not exceed 2%, and the lower limit of the total amount is above 0.05%. In some embodiments, the amount of CoO and Co2O3 may be about 0.05%, 0.1%, 0.2%, 0.3%, 0.4%, 0.5%, 0.6%, 0.7%, 0.8%, 0.9%, 1.0%, 1.1%, 1.2%, 1.3%, 1.4%, 1.5%, 1.6%, 1.7%, 1.8%, 1.9%, or 2.0%.

[0314] The yellow matrix glass, microcrystalline glass or microcrystalline glass products prepared by the present invention use Cu2O or CeO2 as a colorant. The two colorant components are used alone or in combination, and the lower limit of their respective content is above 0.5%. If it is lower than 0.5%, the color of the matrix glass, microcrystalline glass or microcrystalline glass products is not obvious. Cu2O is used alone at a content of less than 4%, preferably less than 3%. If the content exceeds 4%, the matrix glass is likely to crystallize. In some embodiments, the CuO content may be about 0.5%, 0.6%, 0.7%, 0.8%, 0.9%, 1.0%, 1.1%, 1.2%, 1.3%, 1.4%, 1.5%, 1.6%, 1.7%, 1.8%, 1.9%, 2.0%, 2.1%, 2.2%, 2.3%, 2.4%, 2.5%, 2.6%, 2.7%, 2.8%, 2.9%, 3.0%, 3.1%, 3.2%, 3.3%, 3.4%, 3.5%, 3.6%, 3.7%, 3.8%, 3.9%, or 4.0%. The CeO content alone is generally less than 4%, preferably less than 3%. If the content exceeds 4%, the matrix glass, glass-ceramics, or glass-ceramics products may have poor gloss. In some embodiments, CeO2 may be included in an amount of about 0.5%, 0.6%, 0.7%, 0.8%, 0.9%, 1.0%, 1.1%, 1.2%, 1.3%, 1.4%, 1.5%, 1.6%, 1.7%, 1.8%, 1.9%, 2.0%, 2.1%, 2.2%, 2.3%, 2.4%, 2.5%, 2.6%, 2.7%, 2.8%, 2.9%, 3.0%, 3.1%, 3.2%, 3.3%, 3.4%, 3.5%, 3.6%, 3.7%, 3.8%, 3.9%, or 4.0%. Furthermore, a small amount of CeO2 added to the glass has a degassing effect and can also be used as a clarifier in the glass. If two colorants are mixed, their total amount is generally less than 4%, and the lower limit of the total amount is above 0.5%. In some embodiments, CeO2 and Cu2O may be included in an amount of about 0.5%, 0.6%, 0.7%, 0.8%, 0.9%, 1.0%, 1.1%, 1.2%, 1.3%, 1.4%, 1.5%, 1.6%, 1.7%, 1.8%, 1.9%, 2.0%, 2.1%, 2.2%, 2.3%, 2.4%, 2.5%, 2.6%, 2.7%, 2.8%, 2.9%, 3.0%, 3.1%, 3.2%, 3.3%, 3.4%, 3.5%, 3.6%, 3.7%, 3.8%, 3.9%, or 4.0%.

[0315] The black or smoky gray matrix glass, glass-ceramics or glass-ceramics products prepared by the present invention use Fe2O3 alone as a colorant; or use a mixture of Fe2O3 and CoO as a colorant; or use a mixture of Fe2O3 and Co2O3 as a colorant; or use a mixture of Fe2O3, CoO and NiO as a colorant; or use a mixture of Fe2O3, Co2O3 and NiO as a colorant. The colorant used to prepare black and smoky gray matrix glass, glass-ceramics or glass-ceramics products mainly uses Fe2O3 for coloring, with a content of less than 7%, preferably less than 5%, and its lower limit is more than 0.2%. In some embodiments, it may contain about 0.2%, 0.3%, 0.4%, 0.5%, 0.6%, 0.7%, 0.8%, 0.9%, 1.0%, 1.1%, 1.2%, 1.3%, 1.4%, 1.5%, 1.6% %, 1.7%, 1.8%, 1.9%, 2.0%, 2.1%, 2.2%, 2.3%, 2.4%, 2.5%, 2.6%, 2.7%, 2.8%, 2.9%, 3.0%, 3.1%, 3.2%, 3.3%, 3.4%, 3.5%, 3.6%, 3.7%, 3.8%, 3.9%, 4.0%, 4.5%, 5.0%, 5.5%, 6.0%, 6.5%, 7.0% of Fe2O3. CoO and Co2O3 absorb in visible light and can deepen the coloring of the matrix glass, glass-ceramic or glass-ceramic products. Generally, when mixed with Fe2O3, the content of each is less than 0.6%, and the lower limit is above 0.2%. In some embodiments, CoO and / or Co₂O₃ may be included at approximately 0.2%, 0.3%, 0.4%, 0.5%, or 0.6%. NiO absorbs visible light and can enhance the coloration of the matrix glass, glass-ceramics, or glass-ceramics products. Generally, when mixed, its content is less than 1%, with a combined lower limit of 0.2%. In some embodiments, NiO may be included at approximately 0.2%, 0.3%, 0.4%, 0.5%, 0.6%, 0.7%, 0.8%, 0.9%, or 1.0%.

[0316] The purple matrix glass, microcrystalline glass or microcrystalline glass products prepared by the present invention use MnO2 as a colorant, and the content is generally less than 4%, preferably less than 3%, and the lower limit of the content is above 0.1%. If it is less than 0.1%, the color of the matrix glass, microcrystalline glass or microcrystalline glass products is not obvious. In some embodiments, about 0.1%, 0.2%, 0.3%, 0.4%, 0.5%, 0.6%, 0.7%, 0.8%, 0.9%, 1.0%, 1.1%, 1.2%, 1.3%, 1.4%, 1.5%, 1.6%, 1.7%, 1.8%, 1.9%, 2.0%, 2.1%, 2.2%, 2.3%, 2.4%, 2.5%, 2.6%, 2.7%, 2.8%, 2.9%, 3.0%, 3.1%, 3.2%, 3.3%, 3.4%, 3.5%, 3.6%, 3.7%, 3.8%, 3.9%, 4.0% MnO2 may be included.

[0317] The pink matrix glass, glass-ceramics, or glass-ceramics products prepared by the present invention use Er2O3 as a colorant, with the usage content generally being 8% or less, preferably 6% or less. Due to the low coloring efficiency of the rare earth element Er2O3, a content exceeding 8% does not further deepen the color of the matrix glass, glass-ceramics, or glass-ceramics products, and instead increases costs. The lower limit of Er2O3 is 0.4% or greater. If it is less than 0.4%, the color of the matrix glass, glass-ceramics, or glass-ceramics products is less noticeable. In some embodiments, Er2O3 may be included in an amount of about 0.4%, 0.6%, 0.8%, 1.0%, 1.2%, 1.4%, 1.6%, 1.8%, 2.0%, 2.2%, 2.4%, 2.6%, 2.8%, 3.0%, 3.2%, 3.4%, 3.6%, 3.8%, 4.0%, 4.2%, 4.4%, 4.6%, 4.8%, 5.0%, 5.2%, 5.4%, 5.6%, 5.8%, 6.0%, 6.2%, 6.4%, 6.6%, 6.8%, 7.0%, 7.2%, 7.4%, 7.6%, 7.8%, 8.0%.

[0318] The purple-red matrix glass, glass-ceramics, or glass-ceramics products prepared by the present invention use Nd2O3 as a colorant, with the usage content generally being 8% or less, preferably 6% or less. Because the rare earth element Nd2O3 has low coloring efficiency, using a content exceeding 8% will not further deepen the color of the matrix glass, glass-ceramics, or glass-ceramics products, but will instead increase costs. The lower limit of the Nd2O3 content is 0.4% or greater. If it is less than 0.4%, the color of the matrix glass, glass-ceramics, or glass-ceramics products will not be noticeable. In some embodiments, the Nd2O3 may be included in an amount of about 0.4%, 0.6%, 0.8%, 1.0%, 1.2%, 1.4%, 1.6%, 1.8%, 2.0%, 2.2%, 2.4%, 2.6%, 2.8%, 3.0%, 3.2%, 3.4%, 3.6%, 3.8%, 4.0%, 4.2%, 4.4%, 4.6%, 4.8%, 5.0%, 5.2%, 5.4%, 5.6%, 5.8%, 6.0%, 6.2%, 6.4%, 6.6%, 6.8%, 7.0%, 7.2%, 7.4%, 7.6%, 7.8%, 8.0%.

[0319] The red matrix glass, microcrystalline glass or microcrystalline glass products prepared by the present invention use a mixed colorant of Er2O3, Nd2O3 and MnO2. The Er ions in the glass have absorption at 400-500nm, the Mn ions mainly absorb at 500nm, and the Nd ions mainly have strong absorption at 580nm. The mixture of the three substances can be used to prepare red matrix glass, microcrystalline glass or microcrystalline glass products. Since Er2O3 and Nd2O3 are rare earth colorants, their coloring ability is relatively weak. The usage amount of Er2O3 is within 6%, the usage amount of Nd2O3 is within 4%, and the coloring of MnO2 is strong, with a usage amount within the range of 2%. The lower limit of the total amount of the mixed colorants used is above 0.9%.

[0320] The "does not contain" and "0%" recorded in this article mean that the compound, molecule or element is not intentionally added as a raw material to the matrix glass, microcrystalline glass or microcrystalline glass product of the present invention; however, as the raw materials and / or equipment for producing matrix glass, microcrystalline glass or microcrystalline glass products, there will be certain impurities or components that are not intentionally added, which will be contained in small amounts or trace amounts in the final matrix glass, microcrystalline glass or microcrystalline glass product. This situation is also within the scope of protection of the patent of this invention.

[0321] In some embodiments of the present invention, the crystalline phase of the glass-ceramics and glass-ceramics products contains lithium silicate crystals, which provide the glass-ceramics and glass-ceramics products of the present invention with high strength, increase the fracture toughness of the glass-ceramics and glass-ceramics products, and increase the drop ball test height and four-point bending strength of the glass-ceramics and glass-ceramics products. The glass-ceramics of the present invention have excellent chemical strengthening properties and can also be chemically strengthened to obtain additional mechanical strength. Through reasonable component design, the glass-ceramics and glass-ceramics products of the present invention can achieve an appropriate grain size, thus imparting high strength to the glass-ceramics and glass-ceramics products of the present invention. The glass-ceramics and glass-ceramics products of the present invention have good crystallinity, which gives the glass-ceramics and glass-ceramics products of the present invention excellent mechanical properties. Crystallinity, as referred to herein, refers to the degree of completeness of the crystallization. In a fully crystallized crystal, the arrangement of particles within the crystal is relatively regular, the diffraction lines are strong, sharp, and symmetrical, and the half-width of the diffraction peak is close to the width measured by the instrument. Crystals with poor crystallinity contain defects such as dislocations, which result in broad and diffuse diffraction peaks. The poorer the crystallinity, the weaker the diffraction ability and the wider the diffraction peak, until it disappears into the background. In some embodiments, the crystallinity of the glass-ceramic product or glass-ceramic is 50% or more, preferably 60% or more, and more preferably 70% or more.

[0322] The grain size and type of the glass-ceramics or glass-ceramics products of the present invention affect the haze and transmittance of the glass-ceramics or glass-ceramics products. The smaller the grains, the higher the transmittance; the smaller the haze, the higher the transmittance. In some embodiments, the haze of a glass-ceramics product or glass-ceramics with a thickness of less than 1 mm is less than 0.15%, preferably less than 0.12%, and more preferably less than 0.1%. In some embodiments, the grain size of the glass-ceramics product or glass-ceramics is less than 50 nm, preferably less than 40 nm, and more preferably less than 30 nm.

[0323] In some embodiments, the crystalline phase content and refractive index of the glass-ceramics or glass-ceramics products of the present invention affect the |B| value of the glass-ceramics or glass-ceramics products. When observed in the visible light range, the glass-ceramics or glass-ceramics products appear bluish or yellowish, affecting the optical properties of the product. This is indicated by the |B| value in LAB (chromaticity value of material color). The glass-ceramics or glass-ceramics products exhibit low |B| values in the visible light range. In some embodiments, the average optical |B| value of a glass-ceramic product or glass-ceramics with a thickness of less than 1 mm at 400-800 nm is 0.6 or less, preferably 0.55 or less, and more preferably 0.5 or less.

[0324] In some embodiments, the glass-ceramics or glass-ceramics products of the present invention exhibit high transparency in the visible light range (i.e., the glass-ceramics or glass-ceramics products are transparent). The glass-ceramics or glass-ceramics products exhibit high transmittance in the visible light range. In some embodiments, the average light transmittance of a glass-ceramics product or glass-ceramics with a thickness of less than 1 mm at 400 to 800 nm is preferably 89% or greater. In some preferred embodiments, the light transmittance of a glass-ceramics product or glass-ceramics with a thickness of less than 1 mm at 550 nm is preferably 91% or greater.

[0325] In some embodiments, an antimicrobial component can be added to the matrix glass, glass-ceramic, or glass-ceramic product. The glass-ceramic or glass-ceramic products described herein can be used in applications such as kitchen or dining countertops, where exposure to harmful bacteria is likely. Antimicrobial components that can be added to the matrix glass, glass-ceramic, or glass-ceramic product include, but are not limited to, Ag, AgO, Cu, CuO, Cu2O, and the like. In some embodiments, the content of these antimicrobial components, alone or in combination, is 2% or less, preferably 1% or less.

[0326] The matrix glass, glass-ceramics and glass-ceramics products of the present invention can be produced and manufactured by the following methods:

[0327] To create the matrix glass: Mix the raw materials in the correct proportions and place the mixture in a platinum or quartz crucible. Depending on the melting difficulty of the glass components, heat the mixture in an electric or gas furnace at 1250-1650°C for 5-24 hours. After melting and stirring until uniform, cool to the appropriate temperature, pour into a mold, and slowly cool.

[0328] The matrix glass of the present invention can be formed by a well-known method.

[0329] The matrix glass of the present invention is subjected to crystallization treatment by a crystallization process after forming or forming processing, and crystals are uniformly separated out in the glass interior. This crystallization treatment can be carried out in one stage or in two stages, and is preferably carried out in two stages. The process of the nucleation process is carried out at a first temperature, and then the process of the crystal growth process is carried out at a second temperature higher than the nucleation process temperature. The crystallization treatment carried out at the first temperature is referred to as the first crystallization treatment, and the crystallization treatment carried out at the second temperature is referred to as the second crystallization treatment.

[0330] In order to obtain the desired physical properties of glass-ceramics, the preferred crystallization process is:

[0331] The above-mentioned single-stage crystallization process allows for continuous nucleation and crystal growth. Specifically, the temperature is raised to a predetermined crystallization temperature, maintained at that temperature for a predetermined period of time, and then cooled. The crystallization temperature is preferably between 600°C and 750°C, more preferably between 650°C and 700°C, to precipitate the desired crystalline phase. The holding time at the crystallization temperature is preferably between 0 and 8 hours, more preferably between 1 and 6 hours.

[0332] When the crystallization treatment is performed in two stages, the first temperature is preferably 470-630°C, and the second temperature is preferably 650-750°C. The holding time at the first temperature is preferably 0-24 hours, more preferably 2-15 hours. The holding time at the second temperature is preferably 0-10 hours, more preferably 0.5-6 hours.

[0333] The above holding time of 0 hours means that the temperature starts to decrease or increase again within less than 1 minute after reaching the temperature.

[0334] In some embodiments, the matrix glass or glass-ceramics described herein can be formed into a formed body, including but not limited to a sheet, by various processes, including but not limited to slot drawing, float glass, roller pressing, and other sheet-forming processes known in the art. Alternatively, the matrix glass or glass-ceramics can be formed by float or roller pressing as known in the art.

[0335] The matrix glass or glass-ceramics of the present invention can be processed into a glass molded body in the form of a sheet by grinding or polishing, but the method for producing the glass molded body is not limited to these methods.

[0336] The matrix glass or glass-ceramics formed body of the present invention can be formed into various shapes by methods such as hot bending or pressing at a certain temperature, but is not limited to these methods.

[0337] The matrix glass, glass-ceramic, and glass-ceramic articles described herein can have any reasonably useful thickness.

[0338] In addition to improving mechanical properties by crystallization, the glass-ceramics of the present invention can also obtain higher strength by forming a compressive stress layer, thereby making glass-ceramics products.

[0339] In some embodiments, the matrix glass or glass-ceramics can be processed into sheets and / or shaped (such as punching, hot bending, etc.), polished and / or smoothed after shaping, and then chemically strengthened through a chemical strengthening process.

[0340] The chemical strengthening described in the present invention is an ion exchange method. Both the matrix glass and glass-ceramics of the present invention can be ion exchanged using methods known in the art. During the ion exchange process, smaller metal ions in the matrix glass or glass-ceramics are replaced or "exchanged" with larger metal ions of the same valence located near the matrix glass or glass-ceramics. The replacement of smaller ions with larger ions creates compressive stress in the matrix glass or glass-ceramics, forming a compressive stress layer.

[0341] In some embodiments, the metal ion is a monovalent alkali metal ion (e.g., Na + , K + , Rb + 、Cs + Ion exchange is performed by immersing the matrix glass or glass-ceramic in a salt bath containing at least one molten salt of a larger metal ion, which is used to replace the smaller metal ions in the matrix glass. Alternatively, other monovalent metal ions such as Ag + 、Tl + 、Cu + The one or more ion exchange processes used to chemically strengthen the matrix glass or glass-ceramic may include, but are not limited to, immersing it in a single salt bath, or immersing it in multiple salt baths of the same or different compositions with washing and / or annealing steps between immersions.

[0342] In some embodiments, the matrix glass or glass-ceramic can be ion-exchanged by immersing it in a bath of molten Na salt (e.g., NaNO3) at a temperature of about 430°C to 470°C for about 6 to 20 hours, preferably in the temperature range of 435°C to 460°C, and preferably in the time range of 8 to 13 hours. In this embodiment, the Na ions replace some of the Li ions in the matrix glass or glass-ceramic, thereby forming a surface compression layer and exhibiting high mechanical properties. In some embodiments, the matrix glass or glass-ceramic can be ion-exchanged by immersing it in a bath of molten K salt (e.g., KNO3) at a temperature of about 400°C to 450°C for 1 to 8 hours, preferably in the time range of 2 to 4 hours.

[0343] In some embodiments, there are also ion implantation methods of implanting ions into the surface layer of the matrix glass or glass-ceramics, and thermal strengthening methods of heating the matrix glass or glass-ceramics and then rapidly cooling them.

[0344] The performance indicators of the glass-ceramics and / or glass-ceramics products and / or matrix glass of the present invention are tested using the following methods:

[0345] [Haze]

[0346] The haze tester EEL57D was used to prepare samples with a thickness of less than 1 mm and the test was carried out according to the GB2410-80 standard.

[0347] [Grain size]

[0348] The SEM scanning electron microscope was used for measurement. The microcrystalline glass was surface treated in HF acid, and then the surface of the microcrystalline glass was sprayed with gold. The surface was scanned under the SEM scanning electron microscope to determine the size of its grains.

[0349] [Light transmittance]

[0350] The light transmittance described in this article is external transmittance, sometimes referred to as transmittance.

[0351] The sample was processed to a thickness of less than 1 mm and the opposite surfaces were parallel-polished. The average light transmittance at 400 to 800 nm was measured using a Hitachi U-41000 spectrophotometer.

[0352] The sample was processed to a thickness of less than 1 mm and the opposite surfaces were parallel-polished. The light transmittance at 550 nm was measured using a Hitachi U-41000 spectrophotometer.

[0353] [Crystallinity]

[0354] The XRD diffraction peaks were compared with the database patterns, and the crystallinity was obtained by calculating the proportion of the crystalline phase diffraction intensity in the overall pattern intensity, and was internally calibrated using pure quartz crystals.

[0355] [Surface stress] and [Ion exchange layer depth]

[0356] The surface stress was measured using a glass surface stress meter FSM-6000LEUV.

[0357] The depth of the ion exchange layer was measured using a glass surface stress meter SLP-2000.

[0358] The calculation was performed under the measurement conditions that the refractive index of the sample was 1.54 and the photoelastic constant was 25.3 [(nm / cm) / Mpa].

[0359] [Drop ball test height]

[0360] A sample of a microcrystalline glass product of 150×57×0.55mm is placed on a glass supporting fixture, and a 132g steel ball is dropped from a specified height. The maximum drop ball test height at which the sample can withstand the impact without breaking. Specifically, the test is implemented starting from a drop ball test height of 800mm, and the height is changed in sequence through 850mm, 900mm, 950mm, 1000mm and above without breaking. For the embodiments with a "drop ball test height", the microcrystalline glass product is used as the test object. The test data recorded as 1000mm in the embodiment indicates that the microcrystalline glass product can withstand the impact without breaking even if a steel ball is dropped from a height of 1000mm. The drop ball test height in the present invention is sometimes referred to as the drop ball height.

[0361] [Body falling ball height]

[0362] A 150×57×0.55mm microcrystalline glass sample is placed on a glass supporting fixture, and a 32g steel ball is dropped from a specified height. The maximum drop ball test height that the sample can withstand without breaking is the main body drop ball height. Specifically, the test is carried out from a drop ball test height of 500mm. Without breaking, the height is changed in sequence through 550mm, 600mm, 650mm, 700mm and above. For the embodiments with a "main body drop ball height", microcrystalline glass is used as the test object. The test data recorded as 1000mm in the embodiment indicates that even if a steel ball is dropped from a height of 1000mm, the microcrystalline glass will withstand the impact without breaking.

[0363] [Fracture toughness]

[0364] The method of directly measuring the size of the indentation-extended crack was used. The sample size was 2mm×4mm×20mm. After chamfering, grinding and polishing, the sample was prepared. A Vickers hardness indenter was used to apply a force of 49N to the sample and maintain it for 30s. After the indentation was made, the fracture strength was measured using the three-point bending method.

[0365] [Four-point bending strength]

[0366] A microcomputer-controlled electronic universal testing machine CMT6502 was used, with sample specifications of less than 1 mm thickness, and the test was carried out according to ASTM C158-2002.

[0367] The sample thickness is preferably 0.2 to 1 mm, more preferably 0.3 to 0.9 mm, further preferably 0.5 to 0.8 mm, and even more preferably 0.55 mm, 0.6 mm, 0.68 mm, 0.72 mm, or 0.75 mm.

[0368] [Vickers hardness]

[0369] The load (N) when a diamond square pyramid indenter with an angle of 136° between the opposing faces presses a pyramid-shaped depression into the test surface is divided by the surface area (mm2) calculated from the length of the depression. 2 ) value. The test load was set to 100 (N) and the holding time was set to 15 (seconds). In the present invention, Vickers hardness may be simply referred to as hardness.

[0370] [|B|value]

[0371] Use a Minolta CM-700d to test the B value. Use the matching calibration long and short cylinders to perform zero calibration and whiteboard calibration, respectively. After calibration, use the long cylinder to perform an air test to determine the stability and reliability of the instrument calibration (B≤0.05). After the instrument passes the calibration, place the product on the zero long cylinder for testing.

[0372] The |B| value is the absolute value of the B value.

[0373] [Coefficient of thermal expansion]

[0374] Thermal expansion coefficient (α 20℃-120℃ ) Tested in accordance with GB / T7962.16-2010 test method.

[0375] [Refractive index]

[0376] The refractive index (nd) is tested according to GB / T7962.1-2010 method.

[0377] The glass-ceramic product of the present invention has the following properties:

[0378] 1) In some embodiments, the surface stress of the glass-ceramic product is greater than 600 MPa, preferably greater than 650 MPa, and more preferably greater than 700 MPa.

[0379] 2) In some embodiments, the four-point bending strength of the glass-ceramic article is 600 MPa or greater, preferably 650 MPa or greater, and more preferably 700 MPa or greater.

[0380] 3) In some embodiments, the depth of the ion exchange layer of the glass-ceramic product is greater than 20 μm, preferably greater than 30 μm, and more preferably greater than 40 μm.

[0381] 4) In some embodiments, the drop ball test height of the glass-ceramic product is greater than 1300 mm, preferably greater than 1400 mm, and more preferably greater than 1500 mm.

[0382] 5) In some embodiments, the fracture toughness of the glass-ceramic article is 1 MPa·m 1 / 2 Above, preferably 1.1 MPa·m 1 / 2 More than 1.2 MPa·m1 / 2 above.

[0383] 6) In some embodiments, the Vickers hardness (H v ) is 700kgf / mm 2 Above, preferably 720kgf / mm 2 More than 730kgf / mm 2 above.

[0384] 7) In some embodiments, the crystallinity of the glass-ceramic product is 50% or more, preferably 60% or more, and more preferably 70% or more.

[0385] 8) In some embodiments, the grain size of the glass-ceramic product is 50 nm or less, preferably 40 nm or less, and more preferably 30 nm or less.

[0386] 9) In some embodiments, the haze of a glass-ceramic article having a thickness of 1 mm or less is 0.15% or less, preferably 0.12% or less, and more preferably 0.1% or less. The thickness is preferably 0.2 to 1 mm, more preferably 0.3 to 0.9 mm, even more preferably 0.5 to 0.8 mm, and even more preferably 0.55 mm, 0.6 mm, 0.68 mm, 0.72 mm, or 0.75 mm.

[0387] 10) In some embodiments, a glass-ceramic article having a thickness of 1 mm or less has an average transmittance of 89% or greater at wavelengths of 400 to 800 nm. The thickness is preferably 0.2 to 1 mm, more preferably 0.3 to 0.9 mm, even more preferably 0.5 to 0.8 mm, and even more preferably 0.55 mm, 0.6 mm, 0.68 mm, 0.72 mm, or 0.75 mm.

[0388] 11) In some embodiments, a glass-ceramic article having a thickness of 1 mm or less has a transmittance of 91% or greater at a wavelength of 550 nm. The thickness is preferably 0.2 to 1 mm, more preferably 0.3 to 0.9 mm, even more preferably 0.5 to 0.8 mm, and even more preferably 0.55 mm, 0.6 mm, 0.68 mm, 0.72 mm, or 0.75 mm.

[0389] 12) In some embodiments, for a glass-ceramic article having a thickness of 1 mm or less, the average optical |B| value at 400-800 nm is 0.6 or less, preferably 0.55 or less, and more preferably 0.5 or less. The thickness is preferably 0.2-1 mm, more preferably 0.3-0.9 mm, even more preferably 0.5-0.8 mm, and even more preferably 0.55 mm, 0.6 mm, 0.68 mm, 0.72 mm, or 0.75 mm.

[0390] The glass-ceramics of the present invention has the following properties:

[0391] 1) In some embodiments, the crystallinity of the glass-ceramics is 50% or more, preferably 60% or more, and more preferably 70% or more.

[0392] 2) In some embodiments, the grain size of the glass-ceramics is less than 50 nm, preferably less than 40 nm, and preferably less than 30 nm.

[0393] 3) In some embodiments, the haze of a glass-ceramic having a thickness of 1 mm or less is 0.15% or less, preferably 0.12% or less, and more preferably 0.1% or less. The thickness is preferably 0.2 to 1 mm, more preferably 0.3 to 0.9 mm, further preferably 0.5 to 0.8 mm, and even more preferably 0.55 mm, 0.6 mm, 0.68 mm, 0.72 mm, or 0.75 mm.

[0394] 4) In some embodiments, the glass-ceramics having a thickness of 1 mm or less has an average transmittance of 89% or greater at wavelengths of 400 to 800 nm. The thickness is preferably 0.2 to 1 mm, more preferably 0.3 to 0.9 mm, even more preferably 0.5 to 0.8 mm, and even more preferably 0.55 mm, 0.6 mm, 0.68 mm, 0.72 mm, or 0.75 mm.

[0395] 5) In some embodiments, the transmittance of a glass-ceramic having a thickness of 1 mm or less at a wavelength of 550 nm is 91% or greater. The thickness is preferably 0.2 to 1 mm, more preferably 0.3 to 0.9 mm, even more preferably 0.5 to 0.8 mm, and even more preferably 0.55 mm, 0.6 mm, 0.68 mm, 0.72 mm, or 0.75 mm.

[0396] 6) In some embodiments, the drop height of the microcrystalline glass body is greater than 1000 mm, preferably greater than 1100 mm, and more preferably greater than 1200 mm.

[0397] 7) In some embodiments, for glass-ceramics having a thickness of less than 1 mm, the average optical |B| value at 400-800 nm is less than 0.6, preferably less than 0.55, and more preferably less than 0.5. The thickness is preferably 0.2-1 mm, more preferably 0.3-0.9 mm, further preferably 0.5-0.8 mm, and even more preferably 0.55 mm, 0.6 mm, 0.68 mm, 0.72 mm, or 0.75 mm.

[0398] 8) In some embodiments, the Vickers hardness (H v ) is 650kgf / mm 2Above, preferably 680kgf / mm 2 More than 700 kgf / mm 2 above.

[0399] 9) In some embodiments, the thermal expansion coefficient (α 20℃-120℃ ) is 75~95×10 -7 / K.

[0400] 10) In some embodiments, the refractive index of the glass-ceramics (n d ) is 1.5700~1.5800.

[0401] The matrix glass of the present invention has the following properties:

[0402] 1) In some embodiments, the thermal expansion coefficient (α 20℃-120℃ ) is 50×10 -7 / K~70×10 -7 / K.

[0403] 2) In some embodiments, the refractive index of the matrix glass (n d ) is 1.5600~1.5700.

[0404] Due to the above-mentioned excellent properties, the microcrystalline glass, microcrystalline glass products and matrix glass of the present invention can be widely made into glass cover plates or glass components; at the same time, the microcrystalline glass, microcrystalline glass products and matrix glass of the present invention are used in electronic equipment or display devices, such as mobile phones, watches, computers, touch screen displays, etc., and are used to manufacture protective glass for mobile phones, smart phones, tablet computers, laptops, PDAs, televisions, personal computers, MTA machines or industrial displays, or to manufacture touch screens, protective windows, car windows, train windows, aircraft machinery windows, touch screen protective glass, or to manufacture hard disk substrates or solar cell substrates, or to manufacture white household appliances, such as refrigerator parts or kitchen utensils.

[0405] Example

[0406] To further illustrate and describe the technical solutions of the present invention, the following non-limiting examples are provided. While every effort has been made to ensure the accuracy of the numerical values (e.g., amounts, temperatures, etc.) in the present examples, some errors and deviations must be taken into account. The compositions themselves are given in wt % based on the oxides and are normalized to 100%.

[0407] <Matrix Glass Example>

[0408] This embodiment uses the above-mentioned method for producing matrix glass to obtain matrix glasses having the compositions shown in Tables 1 to 4. In addition, the properties of each matrix glass were measured using the testing method described in the present invention, and the measurement results are shown in Tables 1 to 4.

[0409] Table 1.

[0410]

[0411]

[0412] Table 2.

[0413]

[0414]

[0415] Table 3.

[0416] Components (wt%) 19# 20# 21# 22# 23# 24# 25# 26# 27# <![CDATA[SiO2]]> 54 55 55 45 46 47 48 49 66 <![CDATA[Al2O3]]> 8 8 8 10 17 16 10 10 8 <![CDATA[Li2O]]> 15 15 15 25 18 18 24 23 10 <![CDATA[Na2O]]> 0 4 2 0 0 0 0 0 0 <![CDATA[P2O5]]> 4 4 4 4 4 4 4 4 4 <![CDATA[ZrO2]]> 9 9 9 8 9 9 9 9 9 <![CDATA[Y2O3]]> 4 3 3 8 3 3 3 3 3 <![CDATA[K2O]]> 4 0 2 0 0 0 0 0 0 <![CDATA[B2O3]]> 0 0 0 0 0 0 0 0 0 ZnO 0 0 0 0 0 0 2 0 0 MgO 0 0 0 0 0 0 0 2 0 SrO 2 0 0 0 3 0 0 0 0 BaO 0 2 0 0 0 3 0 0 0 <![CDATA[TiO2]]> 0 0 2 0 0 0 0 0 0 CaO 0 0 0 0 0 0 0 0 0 <![CDATA[La2O3]]> 0 0 0 0 0 0 0 0 0 <![CDATA[Gd2O3]]> 0 0 0 0 0 0 0 0 0 <![CDATA[Yb2O3]]> 0 0 0 0 0 0 0 0 0 <![CDATA[Sb2O3]]> 0 0 0 0 0 0 0 0 0 total 100 100 100 100 100 100 100 100 100 <![CDATA[Y2O3 / ZrO2]]> 0.4 0.3 0.3 1.0 0.3 0.3 0.3 0.3 0.3 <![CDATA[(Li2O+ZrO2+P2O5) / Y2O3]]> 7.0 9.3 9.3 4.6 10.3 10.3 12.3 12.0 7.7 <![CDATA[Al2O3 / (Li2O+ZrO2+P2O5)]]> 0.29 0.29 0.29 0.27 0.55 0.52 0.27 0.28 0.35 <![CDATA[Na2O / Y2O3]]> 0.0 1.3 0.7 0.0 0.0 0.0 0.0 0.0 0.0 <![CDATA[Y2O3 / (Al2O3+SiO2)]]> 0.06 0.05 0.05 0.15 0.05 0.05 0.05 0.05 0.04 <![CDATA[α 20℃-120℃ (×10 -7 / K)]]> 62 70 70 53 52 52 65 64 63 <![CDATA[n d ]]> 1.5650 1.5625 1.5608 1.5632 1.5667 1.5611 1.5632 1.5688 1.5655

[0417] Table 4.

[0418]

[0419]

[0420] <Microcrystalline glass example>

[0421] This embodiment uses the above-mentioned method for manufacturing glass-ceramics to obtain glass-ceramics having the compositions shown in Tables 5 to 8. In addition, the properties of each glass-ceramic were measured using the testing method described in the present invention, and the measurement results are shown in Tables 5 to 8.

[0422] Table 5.

[0423]

[0424]

[0425] Table 6.

[0426]

[0427]

[0428] Table 7.

[0429]

[0430]

[0431] Table 8.

[0432]

[0433]

[0434] <Microcrystalline glass product example>

[0435] In this embodiment, the above-described method for manufacturing glass-ceramics was used to obtain glass-ceramics having the compositions shown in Tables 9 to 12. Furthermore, the properties of each glass-ceramic product were measured using the testing method described in the present invention, and the measurement results are shown in Tables 9 to 12.

[0436] Table 9.

[0437]

[0438]

[0439] Table 10.

[0440]

[0441]

[0442] Table 11.

[0443]

[0444]

[0445] Table 12.

[0446]

[0447]

Claims

1. A glass-ceramic product, characterized in that: Its components, expressed in weight percentage, include: SiO2: 46-69%; Al2O3: 8-18%; Li2O: 10-25%; ZrO2: 5-15%; P2O5: 2-10%; and Y2O3: greater than 0 but less than or equal to 8%.

2. A glass-ceramic product, characterized in that: Its components include SiO2, Al2O3, Li2O, ZrO2 and P2O5. The average optical |B| value of microcrystalline glass products with a thickness of less than 1 mm at 400-800 nm is less than 0.

6.

3. The glass-ceramic product according to claim 2, wherein: Its components, expressed in weight percentage, contain: SiO2: 46-69%; and / or Al2O3: 8-18%; and / or Li2O: 10-25%; and / or ZrO2: 5-15%; and / or P2O5: 2-10%; and / or Y2O3: greater than 0 but less than or equal to 8%.

4. The glass-ceramic product according to any one of claims 1 to 3, wherein: The components thereof, expressed in weight percentage, further contain: K2O: 0-5%; and / or MgO: 0-2%; and / or ZnO: 0-2%; and / or Na2O: 0-6%; and / or SrO: 0-5%; and / or BaO: 0-5%; and / or CaO: 0-5%; and / or TiO2: 0-5%; and / or B2O3: 0-5%; and / or Ln2O3: 0-5%; and / or a clarifier: 0-2%, wherein the Ln2O3 is one or more of La2O3, Gd2O3, and Yb2O3, and the clarifier is one or more of Sb2O3, SnO2, SnO, CeO2, F, Cl, and Br.

5. The glass-ceramic product according to any one of claims 1 to 3, characterized in that: The components are expressed in percentage by weight, and the content of each component meets one or more of the following five conditions: 1) Y2O3 / ZrO2 is greater than 0, preferably Y2O3 / ZrO2 is 0.1 to 1.0, more preferably Y2O3 / ZrO2 is 0.2 to 0.9, and further preferably Y2O3 / ZrO2 is 0.3 to 0.6; 2) (Li2O + ZrO2 + P2O5) / Y2O3 is 2.5 to 50.0, preferably (Li2O + ZrO2 + P2O5) / Y2O3 is 3.0 to 40.0, more preferably (Li2O + ZrO2 + P2O5) / Y2O3 is 4.0 to 21.0, and further preferably (Li2O + ZrO2 + P2O5) / Y2O3 is 8.0 to 16.0; 3) Al2O3 / (Li2O+ZrO2+P2O5) is 0.16 to 0.9, preferably Al2O3 / (Li2O+ZrO2+P2O5) is 0.18 to 0.6, more preferably Al2O3 / (Li2O+ZrO2+P2O5) is 0.19 to 0.5, and further preferably Al2O3 / (Li2O+ZrO2+P2O5) is 0.22 to 0.37; 4) Na2O / Y2O3 is 6.0 or less, preferably Na2O / Y2O3 is 0.1 to 5.0, more preferably Na2O / Y2O3 is 0.3 to 2.0, and further preferably Na2O / Y2O3 is 0.5 to 1.5; 5) Y2O3 / (Al2O3+SiO2) is greater than 0 but less than or equal to 0.15, preferably Y2O3 / (Al2O3+SiO2) is 0.01~0.12, more preferably Y2O3 / (Al2O3+SiO2) is 0.02~0.08, and further preferably Y2O3 / (Al2O3+SiO2) is 0.03~0.

06.

6. The glass-ceramic product according to any one of claims 1 to 3, characterized in that: The components thereof, expressed in weight percentage, contain: SiO2: 50-65%, preferably SiO2: 53-63%; and / or Al2O3: 8-15%, preferably Al2O3: 8-12%; and / or Li2O: 13-22%, preferably Li2O: 14-21%, more preferably Li2O: 15.5-20.5%; and / or ZrO2: 6-12%, preferably ZrO2: 7-12%; and / or P2O5: 3.5-9%, preferably P2O5: 4-8%; and / or K2O: 0-4%, preferably K2O: 0-2%; and / or MgO: 0-1%; and / or ZnO: 0-1%; and / or Na2O: 1-5%, preferably Na2O: 1.5-4%; and / or Y2O3: 1-7% , preferably Y2O3: 2-6%; and / or SrO: 0-3%, preferably SrO: 0-1%; and / or BaO: 0-3%, preferably BaO: 0-1%; and / or TiO2: 0-3%, preferably TiO2: 0-1%; and / or CaO: 0-3%, preferably CaO: 0-1%; and / or B2O3: 0-3%, preferably B2O3: 0-2%; and / or Ln2O3: 0-4%, preferably Ln2O3: 0-3%; and / or clarifier: 0-1%, preferably clarifier: 0-0.5%, wherein the Ln2O3 is one or more of La2O3, Gd2O3, and Yb2O3, and the clarifier is one or more of Sb2O3, SnO2, SnO, CeO2, F, Cl, and Br.

7. The glass-ceramic product according to any one of claims 1 to 3, characterized in that: The components are expressed in weight percentage, wherein: Y2O3 / ZrO2 is 0.05-0.95, preferably Y2O3 / ZrO2 is 0.15-0.8, more preferably Y2O3 / ZrO2 is 0.25-0.7, further preferably Y2O3 / ZrO2 is 0.3-0.65; and / or (Li2O+ZrO2+P2O5) / Y2O3 is 5.0-35.0, preferably (Li2O+ZrO2 + P2O5) / Y2O3 is 6.7 to 20.0, more preferably (Li2O + ZrO2 + P2O5) / Y2O3 is 7.0 to 17.0, further preferably (Li2O + ZrO2 + P2O5) / Y2O3 is 9.0 to 15.0; and / or Al2O3 / (Li2O + ZrO2 + P2O5) is 0.17 to 0.80, preferably Al2O3 / (Li2O + ZrO2 + P2 O5) is 0.2 to 0.55, more preferably Al2O3 / (Li2O+ZrO2+P2O5) is 0.23 to 0.45, further preferably Al2O3 / (Li2O+ZrO2+P2O5) is 0.25 to 0.37; and / or Na2O / Y2O3 is 0.2 to 4.0, preferably Na2O / Y2O3 is 0.4 to 3.0, more preferably Na2O / Y2O3 is 0.5 to 2.0 , further preferably Na2O / Y2O3 is 0.6~1.5; and / or Y2O3 / (Al2O3+SiO2) is 0.01~0.13, preferably Y2O3 / (Al2O3+SiO2) is 0.02~0.1, more preferably Y2O3 / (Al2O3+SiO2) is 0.02~0.08, further preferably Y2O3 / (Al2O3+SiO2) is 0.03~0.

07.

8. The glass-ceramic product according to any one of claims 1 to 3, wherein: Its components do not contain SrO; and / or do not contain BaO; and / or do not contain CaO; and / or do not contain ZnO; and / or do not contain PbO; and / or do not contain As2O3; and / or do not contain TiO2; and / or do not contain B2O3; and / or do not contain Ln2O3; and / or do not contain F; and / or do not contain Ta2O5.

9. The glass-ceramic product according to any one of claims 1 to 3, wherein: The crystal phase of the glass-ceramic product contains lithium silicate and / or lithium phosphate.

10. The glass-ceramic product according to any one of claims 1 to 3, characterized in that: The crystal phase of the glass-ceramic product mainly contains lithium monosilicate, which has a higher weight percentage than other crystal phases. The lithium monosilicate accounts for 10 to 63.5% of the glass-ceramic product, and preferably 15 to 55%.

11. The glass-ceramic product according to any one of claims 1 to 3, wherein: The glass-ceramic product contains a lithium phosphate crystal phase, and the lithium phosphate crystal phase accounts for 3 to 15% by weight of the glass-ceramic product, preferably 5 to 12% by weight.

12. The glass-ceramic product according to any one of claims 1 to 3, wherein: The microcrystalline glass product has a surface stress of 600 MPa or more, preferably 650 MPa or more, more preferably 700 MPa or more; and / or a four-point bending strength of 600 MPa or more, preferably 650 MPa or more, more preferably 700 MPa or more; and / or an ion exchange layer depth of 20 μm or more, preferably 30 μm or more, more preferably 40 μm or more; and / or a drop ball test height of 1300 mm or more, preferably 1400 mm or more, more preferably 1500 mm or more; and / or a fracture toughness of 1 MPa·m 1 / 2 Above, preferably 1.1 MPa·m 1 / 2 More than 1.2 MPa·m 1 / 2 Above; and / or Vickers hardness is 700kgf / mm 2 Above, preferably 720kgf / mm 2 More than 730kgf / mm 2 and / or a crystallinity of 50% or more, preferably 60% or more, more preferably 70% or more; and / or a grain size of 50nm or less, preferably 40nm or less, more preferably 30nm or less.

13. The glass-ceramic product according to any one of claims 1 to 3, characterized in that: The haze of microcrystalline glass products with a thickness of less than 1 mm is less than 0.15%, preferably less than 0.12%, more preferably less than 0.1%; and / or the average transmittance at a wavelength of 400 to 800 nm is greater than 89%; and / or the transmittance at a wavelength of 550 nm is greater than 91%; and / or the average light |B| value at 400 to 800 nm is less than 0.6, preferably less than 0.55, more preferably less than 0.

5.

14. The glass-ceramic product according to claim 13, wherein: The thickness of the glass-ceramic product is 0.2 to 1 mm, preferably 0.3 to 0.9 mm, more preferably 0.5 to 0.8 mm, and further preferably 0.55 mm, 0.6 mm, 0.68 mm, 0.72 mm, or 0.75 mm.

15. The glass-ceramic product according to any one of claims 1 to 3, characterized in that: The microcrystalline glass product contains a colorant, which, expressed in weight percentage, contains: NiO: 0-4%; and / or Ni2O3: 0-4%; and / or CoO: 0-2%; and / or Co2O3: 0-2%; and / or Fe2O3: 0-7%; and / or MnO2: 0-4%; and / or Er2O3: 0-8%; and / or Nd2O3: 0-8%; and / or Cu2O: 0-4%; and / or Pr2O3: 0-8%; and / or CeO2: 0-4%.

16. Glass-ceramics, characterized in that Its components, expressed in weight percentage, include: SiO2: 46-69%; Al2O3: 8-18%; Li2O: 10-25%; ZrO2: 5-15%; P2O5: 2-10%; and Y2O3: greater than 0 but less than or equal to 8%.

17. Glass-ceramics, characterized in that Its components include SiO2, Al2O3, Li2O, ZrO2 and P2O5. The average optical |B| value of 400-800nm of microcrystalline glass with a thickness of less than 1mm is less than 0.

6.

18. The glass-ceramic according to claim 17, wherein: Its components, expressed in weight percentage, contain: SiO2: 46-69%; and / or Al2O3: 8-18%; and / or Li2O: 10-25%; and / or ZrO2: 5-15%; and / or P2O5: 2-10%; and / or Y2O3: greater than 0 but less than or equal to 8%.

19. The glass-ceramics according to any one of claims 16 to 18, wherein: The components thereof, expressed in weight percentage, further contain: K2O: 0-5%; and / or MgO: 0-2%; and / or ZnO: 0-2%; and / or Na2O: 0-6%; and / or SrO: 0-5%; and / or BaO: 0-5%; and / or TiO2: 0-5%; and / or CaO: 0-5%; and / or B2O3: 0-5%; and / or Ln2O3: 0-5%; and / or a clarifier: 0-2%, wherein the Ln2O3 is one or more of La2O3, Gd2O3, and Yb2O3, and the clarifier is one or more of Sb2O3, SnO2, SnO, CeO2, F, Cl, and Br.

20. The glass-ceramics according to any one of claims 16 to 18, wherein: The components are expressed in percentage by weight, and the content of each component meets one or more of the following five conditions: 1) Y2O3 / ZrO2 is greater than 0, preferably Y2O3 / ZrO2 is 0.1 to 1.0, more preferably Y2O3 / ZrO2 is 0.2 to 0.9, and further preferably Y2O3 / ZrO2 is 0.3 to 0.6; 2) (Li2O + ZrO2 + P2O5) / Y2O3 is 2.5 to 50.0, preferably (Li2O + ZrO2 + P2O5) / Y2O3 is 3.0 to 40.0, more preferably (Li2O + ZrO2 + P2O5) / Y2O3 is 4.0 to 21.0, and further preferably (Li2O + ZrO2 + P2O5) / Y2O3 is 8.0 to 16.0; 3) Al2O3 / (Li2O+ZrO2+P2O5) is 0.16 to 0.9, preferably Al2O3 / (Li2O+ZrO2+P2O5) is 0.18 to 0.6, more preferably Al2O3 / (Li2O+ZrO2+P2O5) is 0.19 to 0.5, and further preferably Al2O3 / (Li2O+ZrO2+P2O5) is 0.22 to 0.37; 4) Na2O / Y2O3 is 6.0 or less, preferably Na2O / Y2O3 is 0.1 to 5.0, more preferably Na2O / Y2O3 is 0.3 to 2.0, and further preferably Na2O / Y2O3 is 0.5 to 1.5; 5) Y2O3 / (Al2O3+SiO2) is greater than 0 but less than or equal to 0.15, preferably Y2O3 / (Al2O3+SiO2) is 0.01~0.12, more preferably Y2O3 / (Al2O3+SiO2) is 0.02~0.08, and further preferably Y2O3 / (Al2O3+SiO2) is 0.03~0.

06.

21. The glass-ceramics according to any one of claims 16 to 18, wherein: The components thereof, expressed in weight percentage, contain: SiO2: 50-65%, preferably SiO2: 53-63%; and / or Al2O3: 8-15%, preferably Al2O3: 8-12%; and / or Li2O: 13-22%, preferably Li2O: 14-21%, more preferably Li2O: 15.5-20.5%; and / or ZrO2: 6-12%, preferably ZrO2: 7-12%; and / or P2O5: 3.5-9%, preferably P2O5: 4-8%; and / or K2O: 0-4%, preferably K2O: 0-2%; and / or MgO: 0-1%; and / or ZnO: 0-1%; and / or Na2O: 1-5%, preferably Na2O: 1.5-4%; and / or Y2O3: 1-7% , preferably Y2O3: 2-6%; and / or SrO: 0-3%, preferably SrO: 0-1%; and / or BaO: 0-3%, preferably BaO: 0-1%; and / or TiO2: 0-3%, preferably TiO2: 0-1%; and / or CaO: 0-3%, preferably CaO: 0-1%; and / or B2O3: 0-3%, preferably B2O3: 0-2%; and / or Ln2O3: 0-4%, preferably Ln2O3: 0-3%; and / or clarifier: 0-1%, preferably clarifier: 0-0.5%, wherein the Ln2O3 is one or more of La2O3, Gd2O3, and Yb2O3, and the clarifier is one or more of Sb2O3, SnO2, SnO, CeO2, F, Cl, and Br.

22. The glass-ceramics according to any one of claims 16 to 18, wherein: The components are expressed in weight percentage, wherein: Y2O3 / ZrO2 is 0.05-0.95, preferably Y2O3 / ZrO2 is 0.15-0.8, more preferably Y2O3 / ZrO2 is 0.25-0.7, further preferably Y2O3 / ZrO2 is 0.3-0.65; and / or (Li2O+ZrO2+P2O5) / Y2O3 is 5.0-35.0, preferably (Li2O+ZrO2 + P2O5) / Y2O3 is 6.7 to 20.0, more preferably (Li2O + ZrO2 + P2O5) / Y2O3 is 7.0 to 17.0, further preferably (Li2O + ZrO2 + P2O5) / Y2O3 is 9.0 to 15.0; and / or Al2O3 / (Li2O + ZrO2 + P2O5) is 0.17 to 0.80, preferably Al2O3 / (Li2O + ZrO2 + P2 O5) is 0.2 to 0.55, more preferably Al2O3 / (Li2O+ZrO2+P2O5) is 0.23 to 0.45, further preferably Al2O3 / (Li2O+ZrO2+P2O5) is 0.25 to 0.37; and / or Na2O / Y2O3 is 0.2 to 4.0, preferably Na2O / Y2O3 is 0.4 to 3.0, more preferably Na2O / Y2O3 is 0.5 to 2.0 , further preferably Na2O / Y2O3 is 0.6~1.5; and / or Y2O3 / (Al2O3+SiO2) is 0.01~0.13, preferably Y2O3 / (Al2O3+SiO2) is 0.02~0.1, more preferably Y2O3 / (Al2O3+SiO2) is 0.02~0.08, further preferably Y2O3 / (Al2O3+SiO2) is 0.03~0.

07.

23. The glass-ceramics according to any one of claims 16 to 18, characterized in that: Its components do not contain SrO; and / or do not contain BaO; and / or do not contain CaO; and / or do not contain ZnO; and / or do not contain PbO; and / or do not contain As2O3; and / or do not contain TiO2; and / or do not contain B2O3; and / or do not contain Ln2O3; and / or do not contain F; and / or do not contain Ta2O5.

24. The glass-ceramics according to any one of claims 16 to 18, characterized in that: The crystal phase of the glass-ceramics contains lithium silicate and / or lithium phosphate.

25. The glass-ceramics according to any one of claims 16 to 18, wherein: The crystal phase of the glass-ceramics mainly contains lithium monosilicate, which has a higher weight percentage than other crystal phases. The lithium monosilicate accounts for 10 to 63.5% of the glass-ceramics, preferably 15 to 55%.

26. The glass-ceramics according to any one of claims 16 to 18, characterized in that: The microcrystalline glass contains a lithium phosphate crystal phase, and the lithium phosphate crystal phase accounts for 3 to 15% by weight of the microcrystalline glass, preferably 5 to 12%.

27. The glass-ceramics according to any one of claims 16 to 18, characterized in that: The crystallinity of the glass-ceramics is 50% or more, preferably 60% or more, more preferably 70% or more; and / or the grain size is 50nm or less, preferably 40nm or less, more preferably 30nm or less; and / or the thermal expansion coefficient is 75 to 95×10 -7 / K; and / or a refractive index of 1.5700 to 1.5800; and / or a body drop height of 1000 mm or more, preferably 1100 mm or more, more preferably 1200 mm or more; and / or a Vickers hardness of 650 kgf / mm 2 Above, preferably 680kgf / mm 2 More than 700 kgf / mm 2 above.

28. The glass-ceramics according to any one of claims 16 to 18, characterized in that: The haze of microcrystalline glass with a thickness of less than 1 mm is less than 0.15%, preferably less than 0.12%, more preferably less than 0.1%; and / or the average transmittance at a wavelength of 400 to 800 nm is greater than 89%; and / or the transmittance at a wavelength of 550 nm is greater than 91%; and / or the average light |B| value at 400 to 800 nm is less than 0.6, preferably less than 0.55, more preferably less than 0.

5.

29. The glass-ceramic according to claim 28, wherein The thickness of the glass-ceramics is 0.2 to 1 mm, preferably 0.3 to 0.9 mm, more preferably 0.5 to 0.8 mm, and further preferably 0.55 mm, 0.6 mm, 0.68 mm, 0.72 mm, or 0.75 mm.

30. The glass-ceramics according to any one of claims 16 to 18, wherein: The microcrystalline glass contains a colorant, which, expressed in weight percentage, contains: NiO: 0-4%; and / or Ni2O3: 0-4%; and / or CoO: 0-2%; and / or Co2O3: 0-2%; and / or Fe2O3: 0-7%; and / or MnO2: 0-4%; and / or Er2O3: 0-8%; and / or Nd2O3: 0-8%; and / or Cu2O: 0-4%; and / or Pr2O3: 0-8%; and / or CeO2: 0-4%.

31. Glass cover plate, characterized in that A glass-ceramic product comprising the glass-ceramic product according to any one of claims 1 to 15, and / or the glass-ceramic product according to any one of claims 16 to 30.

32. A glass component, characterized in that: A glass-ceramic product comprising the glass-ceramic product according to any one of claims 1 to 15, and / or the glass-ceramic product according to any one of claims 16 to 30.

33. A display device, characterized in that A glass-ceramic product comprising the glass-ceramic product according to any one of claims 1 to 15, and / or the glass-ceramic product according to any one of claims 16 to 30, and / or the glass cover plate according to claim 31, and / or the glass component according to claim 32.

34. Electronic equipment, characterized in that A glass-ceramic product comprising the glass-ceramic product according to any one of claims 1 to 15, and / or the glass-ceramic product according to any one of claims 16 to 30, and / or the glass cover plate according to claim 31, and / or the glass component according to claim 32.

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