High-strength quasi-plastic zirconia-reinforced glass-ceramics, method for the production thereof and use thereof

Abstract

The application belongs to the technical field of oxide glass ceramics, and discloses a high-strength quasi-plastic zirconia-reinforced glass ceramic as well as a preparation method and application thereof. The glass ceramic is prepared by uniformly mixing glass raw materials, ZrO2 nano ceramic particles and fluxing agents to obtain mixed slurry, drying to obtain mixed powder, molding and cold isostatic pressing to obtain a green body, melting and heat preservation at 1200-2200 DEG C, and then cooling to obtain the glass ceramic. The glass raw materials include SiO2, MgO, Al2O3 and Re2O3. The glass ceramic has high hardness (> 7 GPa), compressive strength (≥ 4 GPa), high wear resistance and damage resistance, and a thermal expansion coefficient of (3-9) × 10 ‑6 -6, indentation toughness greater than 3 MPa·m 1 / 2 , and quasi-plastic characteristics in the fracture process, i.e. the stress-strain curve presents obvious nonlinear fracture, and can be applied in the fields of intelligent devices, semiconductors, glass coatings or precision instruments.

Description

Technical Field

[0001] This invention belongs to the field of inorganic non-metallic materials technology, and more specifically, relates to a high-strength, quasi-plastic zirconia-reinforced glass ceramic, its preparation method, and its application. Background Technology

[0002] Glass-ceramics (also known as glass-ceramics) are a class of multiphase materials formed by the precipitation of crystalline phases within a glass matrix through controlled heat treatment. These materials, primarily composed of oxides, offer advantages such as a wide availability of raw materials, flexible composition design, and simple molding processes. They combine the softening properties of glass with the mechanical properties of ceramics, exhibiting high mechanical strength, excellent corrosion resistance, and dielectric properties. Therefore, glass-ceramics have broad application prospects in fields such as chemical engineering, biomedicine, aerospace, and microelectronics.

[0003] However, conventional glass-ceramics still suffer from insufficient fracture toughness and damage resistance, limiting their application in high-end applications. To improve mechanical properties, existing technologies mainly employ two methods: ion exchange, which improves impact resistance by introducing residual compressive stress on the material surface, but this method is typically only applicable to thin-walled components (such as mobile phone back panels), limiting its application scope; and crystallization (heat treatment), which strengthens the material by controlling the precipitation of high-modulus crystals, but this process has poor control over grain size and content, easily leading to uneven microstructure within the material and difficulty in ensuring performance stability. Researchers have further improved the mechanical properties of glass-ceramics by introducing zirconium oxide (ZrO2) reinforcing phases. For example, patent CN117486495B proposes a "melting + heat treatment (nucleation + crystallization)" process to controllably precipitate ZrO2 crystalline phases or form ZrO2-reinforced glass ceramics. However, this method has the following drawbacks: the process is complex and energy consumption is high; the crystal phase size and content are difficult to control precisely during heat treatment, leading to unstable performance; in traditional melting methods, the solubility of ZrO2 in silicate melts is limited (usually <6wt%), making it difficult to achieve high-content (e.g., >20 vol%) uniformly dispersed composite materials. Patent CN101139170B uses a "direct mixing method," which involves mixing lithium disilicate glass powder with ZrO2 powder and then preparing the composite material through vacuum hot pressing sintering. This method also has significant drawbacks: it requires the pre-preparation of glass powder, followed by secondary mixing, drying, and sintering, resulting in a lengthy process, high energy consumption, and high cost; the secondary crystallization behavior of the glass is difficult to control during sintering, easily leading to microstructural instability and affecting the consistency of material properties. Existing ZrO2-reinforced glasses generally exhibit brittle fracture and have not yet achieved quasi-plastic fracture behavior with good damage tolerance, which severely limits their application in high-reliability fields.

[0004] Therefore, developing a ZrO2-reinforced glass-ceramic with simple processing, controllable structure, and the ability to achieve synergistic improvement in high strength and quasi-plastic fracture has significant scientific research value and engineering application prospects. In particular, in fields such as portable electronic products where the requirements for appearance and mechanical properties are increasingly demanding, improving the comprehensive mechanical properties of glass-ceramics has become a key research direction. Summary of the Invention

[0005] To overcome the shortcomings and disadvantages of the prior art, the primary objective of this invention is to provide a high-strength, quasi-plastic zirconia-reinforced glass-ceramic. This glass-ceramic exhibits high hardness >7 GPa, compressive strength ≥4 GPa, and displays quasi-plastic characteristics during fracture, i.e., the stress-strain curve shows obvious nonlinear fracture (quasi-plastic characteristics).

[0006] Another object of the present invention is to provide a method for preparing the above-mentioned zirconia-reinforced glass-ceramics. This method employs direct melt molding without heat treatment, by adding nano-ZrO2 particles, a flux, and a high-modulus oxide glass matrix (such as SiO2, Al2O3, MgO, etc.). Utilizing the self-dispersion mechanism of ZrO2 nano-ceramic particles in the glass melt, they are uniformly distributed within the glass matrix, thereby forming a stable two-phase structure of the ZrO2-reinforced glass-ceramic, while simultaneously inhibiting the crystallization of the glass matrix and the abnormal growth of the ZrO2 nanoparticles.

[0007] Another object of the present invention is to provide the application of the above-mentioned zirconia-reinforced glass ceramics.

[0008] The above-mentioned objectives of this invention are achieved through the following technical solutions: A high-strength, quasi-plastic zirconia-reinforced glass-ceramic is prepared by mixing glass raw materials, ZrO2 nano-ceramic particles, and flux to obtain a mixed slurry, which is then dried to obtain a mixed powder. The mixed powder is then molded and cold isostatically pressed to obtain a green body. The green body is then melted at 1200~2200℃ and held at that temperature, followed by cooling to obtain the final product. The glass raw materials include SiO2, MgO, Al2O3, and Re2O3.

[0009] Preferably, the molar ratio of SiO2, MgO, Al2O3 and Re2O3 is (40~60):(15~25):(15~25):(1~5); the flux is 5~15wt% of the glass raw material; and the ZrO2 nano-ceramic particles are 5~40vol% of the glass raw material volume.

[0010] Preferably, the Re2O3 is one or more of Y2O3, La2O3, Ce2O3 or Sm2O3.

[0011] Preferably, the flux is one or more of B2O3, Li2O or CaO.

[0012] Preferably, the average particle size of the ZrO2 nanoceramic particles is 50~200 nm.

[0013] Preferably, the glass-ceramic has a hardness > 7 GPa, a compressive strength ≥ 4 GPa, and a coefficient of thermal expansion of (3~9) × 10⁻⁶. -6 Indentation toughness > 3 MPa•m 1 / 2 .

[0014] The method for preparing the high-strength, quasi-plastic zirconia-reinforced glass-ceramic includes the following steps: S1. Mix glass raw materials, ZrO2 nanoparticles and flux to obtain a mixed slurry, and then dry it to obtain a mixed powder; S2. The mixed powder is molded and cold isostatically pressed to obtain a raw blank; S3. Melt the green body at 1200~2200℃ and hold it at that temperature, then cool it to obtain ZrO2-reinforced glass ceramic.

[0015] Preferably, the molding pressure in step S2 is 10~30MPa; the cold isostatic pressing pressure is 100~200MPa.

[0016] Preferably, the heat preservation time in step S3 is 2 to 10 minutes.

[0017] Applications of the high-strength, quasi-plastic zirconia-reinforced glass ceramics in the fields of smart devices, semiconductors, glass coatings, or precision instruments.

[0018] Compared with the prior art, the present invention has the following beneficial effects: 1. The ZrO2 nanoparticle-reinforced glass-ceramic of the present invention possesses both high compressive strength (>4 GPa) and high pressure indentation toughness (>3 MPa•m). 1 / 2 High hardness (>7GPa), high wear resistance, damage resistance, exhibiting pseudo-plastic fracture characteristics, and a thermal expansion coefficient of (3~9)×10. -6 With adjustable transparency, low-content ZrO2 nanoparticle reinforced glass ceramics are transparent, while high-content ZrO2 nanoparticle reinforced glass ceramics are white, and they are used in smart devices, semiconductors, glass coatings, or precision instruments.

[0019] 2. This invention employs a direct melting method by adding ZrO2 nano-ceramic particles and a high-modulus oxide glass matrix (SiO2, Al2O3, MgO, etc.). Under the wetting effect of a flux, the ZrO2 nano-ceramic particles are uniformly distributed within the glass matrix, reducing or preventing glass matrix crystallization, thereby forming a two-phase structure of nanoparticles and glass. This method involves direct molding and cooling after melting, eliminating the need for any heat treatment or crystallization steps. The process is simple and low-cost, requiring no heat treatment, and can mass-produce high-performance ZrO2 nanoparticle-reinforced glass ceramics. This is completely different from the traditional "melting + heat treatment" process for glass ceramics and can be directly used as a protective coating. Attached Figure Description

[0020] Figure 1 A photograph of the ZrO2 nanoparticle-reinforced glass-ceramic of Example 1; Figure 2 A photograph of the ZrO2 nanoparticle-reinforced glass-ceramic from Example 2; Figure 3 The XRD patterns of the ZrO2 nanoparticle-reinforced glass-ceramics in Examples 1-2 are shown below. Figure 4 Transmission electron microscope image of ZrO2 nanoparticle-reinforced glass-ceramic in Example 2; Figure 5 The stress-strain curves of the micropillar compression experiment of the ZrO2 nanoparticle-reinforced glass-ceramic in Example 2 are shown. Figure 6 The 3kg Vickers indentation of the ZrO2 nanoparticle-reinforced glass-ceramic of Example 2. Detailed Implementation

[0021] The present invention will be further described below with reference to specific embodiments, but these should not be construed as limiting the invention. Unless otherwise specified, the technical means used in the embodiments are conventional means well known to those skilled in the art. Unless otherwise specified, the reagents, methods, and equipment used in the present invention are conventional reagents, methods, and equipment in this technical field.

[0022] Example 1: Glass-ceramic reinforced with 5 vol% ZrO2 nanoparticles 1. Add 40g of SiO2 powder, 30g of Al2O3 powder, 20g of MgO powder, 10g of Y2O3 powder, 10g of B2O3 powder, and 9.8g of nano ZrO2 powder (average particle size 50~200 nm) to anhydrous ethanol and ultrasonically disperse for 10 min; then ball mill for 2 h with a ball-to-powder ratio of 1:2 to obtain a uniformly mixed slurry; place the slurry in a rotary evaporator, dry at 80℃, and then pass through a 60-mesh sieve to obtain a mixed powder. 2. The mixed powder is dry-pressed at 30MPa using a steel mold to obtain a block of the corresponding shape, and then cold isostatically pressed at 200MPa to obtain a blank. 3. Place the green blank in a high-temperature furnace and melt it at 1200℃ for 2 minutes. Then cool it to obtain ZrO2 nanoparticle-reinforced glass ceramic (ZrO2-SiO2-Al2O3-MgO-Y2O3-B2O3).

[0023] Figure 1 This is a photograph of the 5 vol% ZrO2 nanoparticle-reinforced glass-ceramic from Example 1. Figure 1 It can be seen that the glass-ceramic becomes transparent after adding 5 vol% ZrO2 nanoparticles. From Figure 2 It can be seen that there is no ZrO2 peak in the sample after adding 5 vol% ZrO2 nanoparticles in Example 1. This is because the ZrO2 content is too low, the diffraction peak is not obvious, or some ZrO2 is dissolved in the glass matrix.

[0024] Example 2: Glass-ceramic reinforced with 30 vol% ZrO2 nanoparticles 1. Add 40g of SiO2 powder, 30g of Al2O3 powder, 20g of MgO powder, 10g of Y2O3 powder, 10g of B2O3 powder, and 58.9g of nano ZrO2 powder to anhydrous ethanol and ultrasonically disperse for 10min; then ball mill for 2h with a ball-to-powder ratio of 1:2 to obtain a uniformly mixed slurry; place the slurry in a rotary evaporator, dry at 80℃, and then pass through a 60-mesh sieve to obtain a mixed powder. 2. The mixed powder is dry-pressed into a block of the corresponding shape using a steel mold at a pressure of 30MPa, and then cold isostatically pressed into a blank at a pressure of 200MPa. 3. Place the green blank in a high-temperature furnace, melt it at 2000℃ and hold it for 2 minutes, and then cool it to obtain ZrO2 nanoparticle-reinforced glass ceramic (ZrO2-SiO2-Al2O3-MgO-Y2O3-B2O3).

[0025] Figure 2 Here is a photograph of the 30 vol% ZrO2 nanoparticle-reinforced glass-ceramic from Example 2; from Figure 2 It can be seen that the glass ceramic with 30 vol% ZrO2 nanoparticles added is white. Figure 3 The images show the XRD patterns of the ZrO2 nanoparticle-reinforced glass-ceramics from Examples 1-2. Figure 3 It can be seen that when 5 vol% zirconium oxide nanoparticles are added, the peak of ZrO2 cannot be detected by XRD. In Example 2, the glass ceramic with 30 vol% zirconium oxide nanoparticles added mainly has an amorphous background and tetragonal ZrO2 diffraction peaks, and ZrO2 nanoparticle-reinforced glass ceramics were obtained. Figure 4 This is a transmission electron microscope (TEM) image of the ZrO2 nanoparticle-reinforced glass-ceramic from Example 2. Figure 4 It can be seen that ZrO2 nanoparticles are uniformly distributed in the ZrO2 nanoparticle-reinforced glass-ceramic (ZrO2-SiO2-Al2O3-MgO-Y2O3-B2O3). Figure 5 The stress-strain curves for the micropillar compression experiment of ZrO2 nanoparticle-reinforced glass-ceramic in Example 2 are shown below. Figure 5 It can be seen that the glass-ceramic reinforced with ZrO2 nanoparticles exhibits obvious nonlinear fracture (quasi-plastic characteristics). Figure 6 The 3kg Vickers indentation of the ZrO2 nanoparticle-reinforced glass-ceramic in Example 2 was performed by... Figure 6 It can be seen that the ZrO2 nanoparticle-reinforced glass ceramics do not produce cracks, indicating that they have low brittleness and high damage resistance.

[0026] Example 3: Glass-ceramic reinforced with 40 vol% ZrO2 nanoparticles 1. Add 40g of SiO2 powder, 30g of Al2O3 powder, 20g of MgO powder, 10g of Y2O3 powder, 15g of B2O3 powder, and 78.5g of nano ZrO2 powder to anhydrous ethanol and ultrasonically disperse for 10min; then ball mill for 2h with a ball-to-powder ratio of 1:2 to obtain a uniformly mixed slurry; place the slurry in a rotary evaporator, dry at 80℃, and then pass through a 60-mesh sieve to obtain a mixed powder. 2. The mixed powder is dry-pressed into a block of the corresponding shape using a steel mold at a pressure of 30MPa, and then cold isostatically pressed into a blank at a pressure of 200MPa. 3. Place the green blank in a high-temperature furnace, melt it at 1700℃ and hold it for 2 minutes, and then cool it to obtain ZrO2 nanoparticle-reinforced glass ceramic (ZrO2-SiO2-Al2O3-MgO-Y2O3-B2O3).

[0027] Example 4: Glass-ceramics reinforced with 30 vol% ZrO2 nanoparticles 1. Add 40g of SiO2 powder, 30g of Al2O3 powder, 20g of MgO powder, 10g of Ce2O3 powder, 10g of B2O3 powder, and 58.9g of nano ZrO2 powder to anhydrous ethanol and ultrasonically disperse for 10min; then ball mill for 2h with a ball-to-powder ratio of 1:2 to obtain a uniformly mixed slurry; place the slurry in a rotary evaporator, dry at 80℃, and then pass through a 60-mesh sieve to obtain a mixed powder. 2. The mixed powder is dry-pressed into a block of the corresponding shape using a steel mold at a pressure of 30MPa, and then cold isostatically pressed into a blank at a pressure of 200MPa. 3. Place the green blank in a high-temperature furnace, melt it at 2000℃ and hold it for 2 minutes, and then cool it to obtain ZrO2 nanoparticle reinforced glass ceramic (ZrO2-SiO2-Al2O3-MgO-Ce2O3-B2O3).

[0028] Example 5: Glass-ceramics reinforced with 30 vol% ZrO2 nanoparticles 1. Add 40g of SiO2 powder, 30g of Al2O3 powder, 20g of MgO powder, 10g of Y2O3 powder, 15g of Li2O powder, and 58.9g of nano ZrO2 powder to anhydrous ethanol and ultrasonically disperse for 10min; then ball mill for 2h with a ball-to-powder ratio of 1:2 to obtain a uniformly mixed slurry; place the slurry in a rotary evaporator, dry at 80℃, and then pass through a 60-mesh sieve to obtain a mixed powder; 2. The mixed powder is dry-pressed into a block of the corresponding shape using a steel mold at a pressure of 30MPa, and then cold isostatically pressed into a blank at a pressure of 200MPa. 3. Place the green blank in a high-temperature furnace, melt it at 1600℃ and hold it for 2 minutes, and then cool it to obtain ZrO2 nanoparticle-reinforced glass ceramic (ZrO2-SiO2-Al2O3-MgO-Y2O3-Li2O).

[0029] Comparative Example 1: Glass-Ceramic 1. Add 40g of SiO2 powder, 30g of Al2O3 powder, 20g of MgO powder, 10g of Y2O3 powder, and 10g of B2O3 powder to anhydrous ethanol and ultrasonically disperse for 10min; then ball mill for 2h with a ball-to-powder ratio of 1:2 to obtain a uniformly mixed slurry; place the slurry in a rotary evaporator, dry at 80℃, and then pass through a 60-mesh sieve to obtain a mixed powder. 2. The mixed powder is dry-pressed into a block of the corresponding shape using a steel mold at a pressure of 30MPa, and then cold isostatically pressed into a blank at a pressure of 200MPa. 3. Place the green blank in a high-temperature furnace, melt it at 1200℃ and hold it for 2-10 minutes, and then cool it to obtain glass ceramic (SiO2-Al2O3-MgO-Y2O3-B2O3).

[0030] Comparative Example 2: 30 vol% ZrO2 nanoparticle reinforced glass without B2O3 1. Add 40g of SiO2 powder, 30g of Al2O3 powder, 20g of MgO powder, 10g of Y2O3 powder, and 58.9g of nano ZrO2 powder to anhydrous ethanol and ultrasonically disperse for 10min; then ball mill for 2h with a ball-to-powder ratio of 1:2 to obtain a uniformly mixed slurry; place the slurry in a rotary evaporator, dry at 80℃, and then pass through a 60-mesh sieve to obtain a mixed powder. 2. The mixed powder is dry-pressed into a block of the corresponding shape using a steel mold at a pressure of 30MPa, and then cold isostatically pressed into a blank at a pressure of 200MPa. 3. Place the green blank in a high-temperature furnace, melt it at 2200℃ and hold it for 2 minutes, and then cool it to obtain ZrO2 nanoparticle-reinforced glass ceramic (ZrO2-SiO2-Al2O3-MgO-Y2O3).

[0031] Comparative Example 3: 30 vol% ZrO2 nanoparticle reinforced glass after heat treatment 1. Add 40g of SiO2 powder, 30g of Al2O3 powder, 20g of MgO powder, 10g of Y2O3 powder, 10g of B2O3 powder, and 58.9g of nano ZrO2 powder to anhydrous ethanol and ultrasonically disperse for 10min; then ball mill for 2h with a ball-to-powder ratio of 1:2 to obtain a uniformly mixed slurry; place the slurry in a rotary evaporator, dry at 80℃, and then pass through a 60-mesh sieve to obtain a mixed powder. 2. The mixed powder is dry-pressed into a block of the corresponding shape using a steel mold at a pressure of 30MPa, and then cold isostatically pressed into a blank at a pressure of 200MPa. 3. Place the green blank in a high-temperature furnace, melt it at 2000℃ and hold it for 2 minutes, then cool it and heat treat it at 900℃ for 2 hours to obtain ZrO2 nanoparticle-reinforced glass ceramic (ZrO2-SiO2-Al2O3-MgO-Y2O3-B2O3).

[0032] The ZrO2 nanoparticle-reinforced glass ceramics of Examples 1-5, Comparative Example 1, and Comparative Examples 2-3 were subjected to the following performance tests: (1) Toughness and Vickers hardness were tested using a Vickers hardness tester with a test pressure of 5 kg and a holding time of 10 s. (2) The coefficient of thermal expansion was tested using a thermal expansion meter. (3) Compressive strength and fracture were tested using an in-situ micropillar compression test with a micropillar diameter of 4 µm and a height of 9-12 µm.

[0033] Table 1 shows the properties of the ZrO2 nanoparticle-reinforced glass ceramics prepared in Examples 1-5, the glass ceramic of Comparative Example 1, and the ZrO2 nanoparticle-reinforced glass ceramics of Comparative Examples 2-3. As can be seen from Table 1, compared to the glass ceramic of Comparative Example 1 without ZrO2 nanoparticles, the ZrO2 nanoparticle-reinforced glass ceramics prepared in Examples 1-5 exhibit adjustable hardness between transparent and white, higher hardness (Vickers hardness > 7 GPa), and better toughness (> 3 MPa•m). 1 / 2It exhibits high compressive strength (>4 GPa), good damage resistance, and quasi-plastic fracture. With increasing ZrO2 nanoparticle content, the coefficient of thermal expansion is (3~9) × 10⁻⁶. -6 The ZrO2 nanoparticle-reinforced glass-ceramics prepared in Examples 1-5, compared to Comparative Example 2 without flux, exhibit better toughness, higher compressive strength, better damage resistance, and quasi-plastic fracture. Compared to Comparative Example 3, which involved an additional heat treatment crystallization process, the ZrO2 nanoparticle-reinforced glass-ceramics in Example 2 show even better toughness, higher compressive strength, better damage resistance, and quasi-plastic fracture.

[0034] Table 1. Properties of ZrO2 nanoparticle-reinforced glass-ceramics prepared in Examples 1-5 and Comparative Examples 1-3.

[0035] The ZrO2 nanoparticle-reinforced glass-ceramic of this invention possesses both high compressive strength (>4 GPa) and high pressure indentation toughness (>3 MPa•m). 1 / 2 High hardness (>7GPa), high wear resistance, damage resistance, exhibiting pseudo-plastic fracture characteristics, and a thermal expansion coefficient of (3~9)×10. -6 With adjustable transparency, low-content ZrO2 nanoparticle reinforced glass ceramics are transparent, while high-content ZrO2 nanoparticle reinforced glass ceramics are white, making them highly valuable for applications in smart devices and precision instruments.

[0036] The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above embodiments. Any changes, modifications, substitutions, combinations and simplifications made without departing from the spirit and principle of the present invention shall be considered equivalent substitutions and shall be included within the protection scope of the present invention.

Claims

1. A high-strength, quasi-plastic zirconia-reinforced glass-ceramic, characterized in that, The zirconia-reinforced glass-ceramic is prepared by mixing glass raw materials, ZrO2 nano-ceramic particles, and flux to obtain a mixed slurry, which is then dried to obtain a mixed powder. The mixed powder is then molded and cold isostatically pressed to obtain a green body. The green body is then melted at 1200~2200℃ and held at that temperature, followed by cooling to obtain the final product. The glass raw materials include SiO2, MgO, Al2O3, and Re2O3.

2. The high-strength, quasi-plastic zirconia-reinforced glass-ceramic according to claim 1, characterized in that, The molar ratio of SiO2, MgO, Al2O3 and Re2O3 is (40~60):(15~25):(15~25):(1~5); the flux is 5~15wt% of the glass raw material; and the ZrO2 nano-ceramic particles are 5~40vol% of the glass raw material volume.

3. The high-strength, quasi-plastic zirconia-reinforced glass-ceramic according to claim 1 or 2, characterized in that, The Re2O3 is one or more of Y2O3, La2O3, Ce2O3 or Sm2O3.

4. The high-strength, quasi-plastic zirconia-reinforced glass-ceramic according to claim 1, characterized in that, The flux is one or more of B2O3, Li2O or CaO.

5. The high-strength, quasi-plastic zirconia-reinforced glass-ceramic according to claim 1, characterized in that, The average particle size of the ZrO2 nanoceramic particles is 50~200 nm.

6. The high-strength, quasi-plastic zirconia-reinforced glass-ceramic according to claim 1, characterized in that, The glass-ceramic has a hardness > 7 GPa, a compressive strength ≥ 4 GPa, and a coefficient of thermal expansion of (3~9) × 10⁻⁶. -6 Indentation toughness > 3 MPa•m 1 / 2 .

7. The method for preparing high-strength, quasi-plastic zirconia-reinforced glass-ceramics according to any one of claims 1 to 6, characterized in that, It includes the following steps: S1. Mix glass raw materials, ZrO2 nano-ceramic particles and flux to obtain a mixed slurry, and then dry it to obtain a mixed powder; S2. The mixed powder is molded and cold isostatically pressed to obtain a raw blank; S3. Melt the green body at 1200~2200℃ and hold it at that temperature, then cool it to obtain ZrO2-reinforced glass ceramic.

8. The method for preparing high-strength, quasi-plastic zirconia-reinforced glass-ceramics according to claim 7, characterized in that, The molding pressure in step S2 is 10~30MPa; the cold isostatic pressing pressure is 100~200MPa.

9. The method for preparing high-strength, quasi-plastic zirconia-reinforced glass-ceramics according to claim 7, characterized in that, The heat preservation time mentioned in step S3 is 2~10 minutes.

10. The application of the high-strength, quasi-plastic zirconia-reinforced glass ceramic according to any one of claims 1 to 6 in the fields of smart devices, semiconductors, glass coatings, or precision instruments.

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