Colored glass articles with improved mechanical durability

Abstract

The colored glass article may comprise at least 50 mol% and at most 80 mol% SiO, at least 7 mol% and at most 25 mol% AlO, at least 1 mol% and at most 15 mol% BO, at least 5 mol% and at most 20 mol% LiO, at least 0.5 mol% and at most 15 mol% NaO, greater than 0 mol% and at most 1 mol% KO, and at most 1×10 -6 % or more and 1 mol % or less of Au. R2O-Al2O3 is -5 mol % or more and 7 mol % or less, and R2O is the total of Li2O, Na2O, and K2O.

Description

Priority

[0001] This application claims the benefit of priority to U.S. Patent Application No. 17 / 677345, filed February 22, 2022, U.S. Patent Application No. 17 / 677375, filed February 22, 2022, U.S. Provisional Patent Application No. 63 / 304807, filed January 31, 2022, U.S. Provisional Patent Application No. 63 / 251785, filed October 4, 2021, and U.S. Provisional Patent Application No. 63 / 212191, filed June 18, 2021, the contents of each of which are relied upon and incorporated herein by reference in their entirety. [Technical field]

[0002] FIELD OF THE DISCLOSURE This disclosure relates generally to glass compositions and glass articles, and more particularly to glass compositions and ion-exchangeable colored glass articles formed therefrom. [Background technology]

[0003] Aluminosilicate glass articles can exhibit excellent ion exchangeability and drop performance. Various industries, including the consumer electronics industry, require colored materials with the same or comparable strength and fracture toughness properties. Summary of the Invention [Problem to be solved by the invention]

[0004] However, simply including a colorant in a conventional aluminosilicate glass composition may not produce the desired color.

[0005] Therefore, there is a need for alternative colored glass articles that have high strength and fracture toughness. [Means for solving the problem]

[0006] According to a first aspect A1, the colored glass article comprises 50 mol % or more and 80 mol % or less of SiO 2 , 7 mol% or more and 25 mol% or less of Al 2 O 3, 1 mol% or more and 15 mol% or less of B 2 O 3 , 5 mol% or more and 20 mol% or less of Li 2 O, 0.5 mol% or more and 15 mol% or less of Na 2 O, more than 0 mol% and not more than 1 mol% K 2 O, and 1 × 10 -6 % or more and 1 mol % or less of Au, and R 2 O-Al 2 O 3 is -5 mol % or more and 7 mol % or less, and R 2 O is Li 2 O, Na 2 O, and K 2 It is the sum of O.

[0007] According to a second first aspect A1.1, the colored glass article is a glass product having a composition of 50 mol % or more and 80 mol % or less of SiO 2 , 7 mol% or more and 25 mol% or less of Al 2 O 3 , 1 mol% or more and 15 mol% or less of B 2 O 3 , 7 mol% or more and 20 mol% or less of Li 2 O, 0.5 mol% or more and 12 mol% or less of Na 2 O, more than 0 mol% and not more than 1 mol% K 2 O, and 1 × 10 -6 % or more and 1 mol % or less of Au, and R 2 O-Al 2 O 3 is -5 mol % or more and 5 mol % or less, R 2 O is Li 2 O, Na 2 O, and K 2 It is the sum of O.

[0008] A second embodiment, A2, is a colored glass article having an L of 50 or more and 100 or less, measured under an F2 illuminant and a standard observation angle of 10°, at an article thickness of 1.33 mm. * , a is between -15 and 25 * , and b between -25 and 25 *The coloured glass article according to the first aspect A1 or the second first aspect A1.1 has a transmittance colour coordinate in CIELAB colour space of:

[0009] The third aspect A3 is R 2 O-Al 2 O 3 is -5 mol% or more and 1.5 mol% or less, b * is greater than or equal to -25 and less than or equal to 10.

[0010] The fourth aspect A4 is R 2 O-Al 2 O 3 is -3 mol% or more and 1.5 mol% or less, b * is greater than or equal to -15 and less than or equal to 7.

[0011] The fifth aspect A5 is R 2 O-Al 2 O 3 is more than 1.5 mol% and not more than 7 mol%, and b * is greater than or equal to 0 and less than or equal to 25.

[0012] The sixth aspect A6 is R 2 O-Al 2 O 3 is more than 1.5 mol% and not more than 5 mol%, and b * is greater than or equal to 0 and less than or equal to 15.

[0013] The seventh aspect A7 is R 2 O-Al 2 O 3 is not less than -3 mol % and not more than 5 mol %.

[0014] The eighth aspect A8 is R 2 O-Al 2 O 3is greater than or equal to -1 mol % and less than or equal to 3 mol %.

[0015] A ninth aspect A9 includes the colored glass article according to any one of the first to eighth aspects A1-A8, wherein the colored glass article includes 0.0001 mol % or more and 0.1 mol % or less of Au.

[0016] The tenth aspect A10 is R 2 The present invention includes a colored glass article according to any one of the first to ninth aspects A1 to A9, in which O is 6 mol % or more and 25 mol % or less.

[0017] The eleventh aspect A11 is R 2 The colored glass article according to a tenth embodiment, wherein O is greater than or equal to 8 mol % and less than or equal to 23 mol %.

[0018] A twelfth aspect A12 is a colored glass article having 0.01 mol % or more and 2 mol % or less of ZrO 2 The present invention also includes a colored glass article according to any one of the first to eleventh aspects A1 to A11, comprising:

[0019] A thirteenth aspect A13 is a colored glass article having 0.1 mol % or more and 1.5 mol % or less ZrO 2 The colored glass article according to twelfth aspect A12 includes:

[0020] A fourteenth aspect A14 is a colored glass article having 0.01 mol % or more and 1 mol % or less of Fe 2 O 3 The present invention also includes a colored glass article according to any one of the first to thirteenth aspects A1 to A13, comprising:

[0021] A fifteenth aspect A15 is a colored glass article having 0.05 mol % or more and 0.5 mol % or less of Fe 2 O 3 The colored glass article according to fourteenth aspect A14 includes:

[0022] The sixteenth aspect A16 is 5.72 * Al 2O 3 (mol%)-21.4 * ZnO (mol%)-2.5 * P 2 O 5 (mol%)-35 * Li 2 O (mol%) - 16.6 * B 2 O 3 (mol%)-20.5 * MgO (mol%) - 23.3 * Na 2 O (mol%) - 27.9 * SrO (mol%)-18.5 * K 2 O (mol%) - 26.3 * The colored glass article according to any one of the first to fifteenth aspects A1 to A15, wherein CaO (mol %) is greater than -609 mol %.

[0023] A seventeenth aspect A17 is a colored glass article having 0.01 mol % or more and 1 mol % or less of SnO 2 The present invention also includes a colored glass article according to any one of the first to sixteenth aspects A1 to A16, comprising:

[0024] The eighteenth aspect A18 is a colored glass article having 0.05 mol % or more and 0.75 mol % or less of SnO 2 The colored glass article according to seventeenth aspect A17 includes:

[0025] A nineteenth aspect, A19, includes the colored glass article according to any one of the first through eighteenth aspects, A1-A18, wherein the colored glass article is substantially free of MgO, CaO, ZnO, Cl, or combinations thereof.

[0026] A twentieth embodiment A20 relates to a colored glass article having a colorant concentration of 7 mol % or more and 18 mol % or less of Li 2 The colored glass article according to any one of the first to nineteenth aspects A1 to A19, comprising O.

[0027] A twenty-first embodiment A21 relates to a colored glass article having a colorant concentration of 9 mol % or more and 16 mol % or less of Li 2The colored glass article according to twentieth embodiment A20 includes O.

[0028] The twenty-second embodiment A22 relates to a colored glass article having 1 mol % or more and 12 mol % or less of Na 2 The colored glass article according to any one of the first to twenty-first aspects A1 to A21, comprising O.

[0029] A twenty-third embodiment A23 relates to a colored glass article having 2 mol % or more and 10 mol % or less of Na 2 The colored glass article according to twenty-second embodiment A22 includes O.

[0030] A twenty-fourth embodiment A24 relates to a colored glass article having 0.1 mol % or more and 0.5 mol % or less of K. 2 The colored glass article according to any one of the first to twenty-third aspects A1 to A23, comprising O.

[0031] A twenty-fifth aspect, A25, is a colored glass article having 9 mol % or more and 23 mol % or less of Al 2 O 3 The present invention also includes a colored glass article according to any one of the first to twenty-fourth aspects A1 to A24, comprising:

[0032] A twenty-sixth aspect A26 relates to a colored glass article having 11 mol % or more and 20 mol % or less of Al. 2 O 3 The colored glass article according to twenty-fifth aspect A25 includes:

[0033] The twenty-seventh aspect A27 is a colored glass article having a colorant content of 2 mol % or more and 12 mol % or less of B 2 O 3 The present invention also includes a colored glass article according to any one of the first to twenty-sixth aspects A1 to A26, comprising:

[0034] The twenty-eighth embodiment A28 is a colored glass article having a colorant content of 3 mol % or more and 10 mol % or less of B 2 O 3 The colored glass article according to twenty-seventh aspect A27 includes:

[0035] A twenty-ninth aspect A29 is a colored glass article having a colorant content of 52 mol % or more and 75 mol % or less of SiO 2 The colored glass article according to any one of the first to twenty-eighth aspects A1 to A28, comprising:

[0036] A thirtieth embodiment, A30, includes the colored glass article according to any one of the first to twenty-ninth embodiments, A1-A29, wherein the colored glass article has a thickness of 250 μm or more and 6 mm or less.

[0037] A thirty-first aspect A31 includes the colored glass article according to any one of the first to thirtieth aspects A1-A30, in which the colored glass article is an ion-exchanged colored glass article.

[0038] A thirty-second embodiment, A32, includes the colored glass article according to the thirty-first embodiment, A31, wherein the ion-exchanged colored glass article has a compression depth of 10 μm or greater.

[0039] A thirty-third embodiment A33 includes the colored glass article according to the thirty-first embodiment A31 or the thirty-second embodiment A32, wherein the ion-exchanged colored glass article has a thickness "t" and a compression depth of 0.15t or greater.

[0040] A thirty-fourth aspect, A34, comprises the colored glass article according to any one of the thirty-first to thirty-third aspects, A31-A33, in which the ion-exchanged colored glass article has a surface compressive stress of 300 MPa or more.

[0041] A thirty-fifth embodiment, A35, comprises the colored glass article according to any one of the thirty-first to thirty-fourth embodiments, A31-A34, wherein the ion-exchanged colored glass article has a maximum central tension of 40 MPa or greater.

[0042] According to a thirty-sixth aspect A36, a consumer electronic device may include a housing having a front, a back, and sides; and electronic components at least partially disposed within the housing, the electronic components including at least a controller, a memory, and a display disposed on or adjacent to the front of the housing, the housing including a tinted glass article according to any one of the first to thirty-fifth aspects A1 to A35.

[0043] According to a thirty-seventh aspect A37, the glass composition comprises 50 mol % or more and 80 mol % or less of SiO 2 , 7 mol% or more and 25 mol% or less of Al 2 O 3 , 1 mol% or more and 15 mol% or less of B 2 O 3 , 5 mol% or more and 20 mol% or less of Li 2 O, 0.5 mol% or more and 15 mol% or less of Na 2 O, more than 0 mol% and not more than 1 mol% K 2 O, and 1 × 10 -6 % or more and 1 mol % or less of Au, and R 2 O-Al 2 O 3 is -5 mol % or more and 7 mol % or less, and R 2 O is Li 2 O, Na 2 O, and K 2 It is the sum of O.

[0044] According to a second thirty-seventh aspect A37.1, the glass composition comprises at least 50 mol % and at most 80 mol % SiO 2 , 7 mol% or more and 25 mol% or less of Al 2 O 3 , 1 mol% or more and 15 mol% or less of B 2 O 3 , 7 mol% or more and 20 mol% or less of Li 2 O, 0.5 mol% or more and 12 mol% or less of Na 2 O, more than 0 mol% and not more than 1 mol% K 2 O, and 1 × 10 -6 % or more and 1 mol % or less of Au, and R 2 O-Al2 O 3 is -5 mol % or more and 5 mol % or less, R 2 O is Li 2 O, Na 2 O, and K 2 It is the sum of O.

[0045] The 38th aspect A38 is R 2 O-Al 2 O 3 is greater than or equal to -3 mol % and less than or equal to 5 mol %.

[0046] The 39th aspect A39 is R 2 O-Al 2 O 3 is greater than or equal to -1 mol % and less than or equal to 3 mol %.

[0047] A fortieth aspect A40 comprises the glass composition according to any one of the thirty-seventh to thirty-ninth aspects A37-A39, in which the glass composition comprises 0.0001 mol % or more and 0.1 mol % or less of Au.

[0048] The forty-first aspect A41 is R 2 The glass composition according to any one of the thirty-seventh to fortieth aspects A37 to A40, in which O is 6 mol % or more and 25 mol % or less, is included.

[0049] The forty-second aspect A42 is R 2 The glass composition according to the forty-first embodiment A41 includes a glass composition according to the forty-first embodiment A41, in which O is 8 mol % or more and 23 mol % or less.

[0050] The 43rd embodiment A43 is a glass composition having 0.01 mol % or more and 2 mol % or less of ZrO 2 The glass composition according to any one of the thirty-seventh to forty-second aspects A37 to A42, comprising:

[0051] The 44th embodiment A44 is a glass composition having 0.1 mol% or more and 1.5 mol% or less of ZrO 2The glass composition of a forty-third embodiment A43 includes the glass composition of a forty-third embodiment A43.

[0052] The forty-fifth embodiment A45 is a glass composition comprising 0.01 mol % or more and 1 mol % or less of Fe 2 O 3 The glass composition according to any one of the thirty-seventh to forty-fourth aspects A37 to A44, comprising:

[0053] In the forty-sixth embodiment, the glass composition contains 0.05 mol % or more and 0.5 mol % or less of Fe. 2 O 3 The glass composition according to the forty-fifth aspect A45 includes:

[0054] The 47th aspect A47 is 5.72 * Al 2 O 3 (mol%)-21.4 * ZnO (mol%)-2.5 * P 2 O 5 (mol%)-35 * Li 2 O (mol%) - 16.6 * B 2 O 3 (mol%)-20.5 * MgO (mol%) - 23.3 * Na 2 O (mol%) - 27.9 * SrO (mol%)-18.5 * K 2 O (mol%) - 26.3 * The glass composition according to any one of the thirty-seventh to forty-sixth aspects A37 to A46, in which CaO (mol %) is greater than -609 mol %.

[0055] The 48th embodiment A48 is a glass composition containing 0.01 mol % or more and 1 mol % or less of SnO 2 The glass composition according to any one of the thirty-seventh to forty-seventh aspects A37 to A47 includes the glass composition according to any one of the thirty-seventh to forty-seventh aspects A37 to A47.

[0056] The forty-ninth aspect A49 is a glass composition comprising 0.05 mol % or more and 0.75 mol % or less of SnO 2The glass composition according to the forty-eighth embodiment A48 includes:

[0057] A fiftieth embodiment, A50, includes the glass composition according to any one of the thirty-seventh to forty-ninth embodiments, A37-A49, wherein the glass composition is substantially free of MgO, CaO, ZnO, Cl, or combinations thereof.

[0058] The 51st embodiment A51 is a glass composition comprising 7 mol % or more and 18 mol % or less of Li 2 The glass composition according to any one of the thirty-seventh to fiftieth aspects A37 to A50 includes O.

[0059] The 52nd embodiment A52 is a glass composition having 9 mol% or more and 16 mol% or less of Li 2 The glass composition according to the fifty-first embodiment A51 includes O.

[0060] The 53rd embodiment A53 is a glass composition comprising 1 mol % or more and 12 mol % or less of Na 2 The glass composition according to any one of the thirty-seventh to fifty-second aspects A37 to A52, comprising O.

[0061] The 54th embodiment A54 is a glass composition comprising 2 mol % or more and 10 mol % or less of Na 2 The glass composition according to the fifty-third embodiment A53 includes O.

[0062] The 55th embodiment A55 is a glass composition having 0.1 mol % or more and 0.5 mol % or less of K 2 The glass composition according to any one of the thirty-seventh to fifty-fourth aspects A37 to A54 includes O.

[0063] The 56th embodiment A56 is a glass composition having 9 mol% or more and 23 mol% or less of Al 2 O 3 The glass composition according to any one of the thirty-seventh to fifty-fifth aspects A37 to A55, comprising:

[0064] The 57th embodiment A57 is a glass composition having 11 mol% or more and 20 mol% or less of Al2 O 3 The glass composition according to fifty-sixth aspect A56 includes the glass composition according to fifty-sixth aspect A56.

[0065] The 58th embodiment A58 is a glass composition having a B content of 2 mol% or more and 12 mol% or less. 2 O 3 The glass composition according to any one of the thirty-seventh to fifty-seventh aspects A37 to A57 includes the glass composition according to any one of the thirty-seventh to fifty-seventh aspects A37 to A57.

[0066] The 59th embodiment A59 is a glass composition having a glass composition of 3 mol% or more and 10 mol% or less of B 2 O 3 The glass composition according to fifty-eighth embodiment A58 includes the glass composition according to fifty-eighth embodiment A58.

[0067] The 60th embodiment A60 is a glass composition having 52 mol% or more and 75 mol% or less of SiO 2 The glass composition according to any one of the thirty-seventh to fifty-ninth aspects A37 to A59 includes the glass composition according to any one of the thirty-seventh to fifty-ninth aspects A37 to A59.

[0068] According to a sixty-first aspect A61, a method of forming a colored glass article includes heat treating a glass composition to form a glass article, the glass composition comprising at least 50 mol % and at most 80 mol % SiO 2 , 7 mol% or more and 25 mol% or less of Al 2 O 3 , 1 mol% or more and 15 mol% or less of B 2 O 3 , 5 mol% or more and 20 mol% or less of Li 2 O, 0.5 mol% or more and 15 mol% or less of Na 2 O, more than 0 mol% and not more than 1 mol% K 2 O, and 1 × 10 -6 % or more and 1 mol % or less of Au, and R 2 O-Al 2 O 3 is -5 mol % or more and 7 mol % or less, and R 2 O is Li 2 O, Na 2 O, and K 2and subjecting the glass article to a heat treatment cycle at a temperature of at least 500° C. and at most 800° C. for a duration of at least 0.25 hours and at most 24 hours to produce a colored glass article.

[0069] According to a second sixty-first aspect A61.1, a method of forming a colored glass article comprises heat treating a glass composition to form a glass article, the glass composition comprising at least 50 mol % and at most 80 mol % SiO 2 , 7 mol% or more and 25 mol% or less of Al 2 O 3 , 1 mol% or more and 15 mol% or less of B 2 O 3 , 7 mol% or more and 20 mol% or less of Li 2 O, 0.5 mol% or more and 12 mol% or less of Na 2 O, more than 0 mol% and not more than 1 mol% K 2 O, and 1 × 10 -6 % or more and 1 mol % or less of Au, and R 2 O-Al 2 O 3 is -5 mol % or more and 5 mol % or less, R 2 O is Li 2 O, Na 2 O, and K 2 and subjecting the glass article to a heat treatment cycle at a temperature of at least 500° C. and at most 800° C. for a duration of at least 0.25 hours and at most 24 hours to produce a colored glass article.

[0070] A sixty-second embodiment A62 comprises the method according to the sixty-first embodiment A61 or the second sixty-first embodiment A61.1, wherein the temperature of the heat treatment cycle is equal to or greater than 550°C and equal to or less than 775°C.

[0071] A sixty-third embodiment A63 includes the method according to any one of the sixty-first to sixty-second embodiments, wherein the duration of the heat treatment cycle is greater than or equal to 0.5 hours and less than or equal to 16 hours.

[0072] A sixty-fourth embodiment A64 includes the method according to any one of the sixty-first to sixty-third embodiments, further comprising strengthening the colored glass article in an ion exchange bath at a temperature of 350° C. or more and 500° C. or less for a period of 2 hours or more and 12 hours or less to form an ion-exchanged glass-ceramic article.

[0073] The 65th embodiment A65 comprises an ion exchange bath containing KNO 3 The method according to the sixty-fourth aspect A64 includes the method according to the sixty-fourth aspect A64.

[0074] The 66th embodiment A66 is characterized in that the ion exchange bath is NaNO 3 The method according to sixty-fifth aspect A65 includes the method according to sixty-fifth aspect A65,

[0075] Additional features and advantages of the colored glass articles described herein are set forth in the detailed description which follows, and in part will be readily apparent to those skilled in the art from that description, or may be learned by practice of the embodiments described herein, including the following detailed description, claims, and accompanying drawings.

[0076] It should be understood that both the foregoing general description and the following detailed description describe various embodiments and are intended to provide an overview or framework for understanding the nature and character of the claimed subject matter. The accompanying drawings are included to provide a further understanding of the various embodiments, and are incorporated into and constitute a part of this specification. The drawings illustrate various embodiments described herein, and together with the description, serve to explain the principles and operation of the claimed subject matter. [Brief description of the drawings]

[0077] [Figure 1] FIG. 1 is a plan view of an electronic device incorporating any of the tinted glass articles according to one or more embodiments described herein. [Diagram 2] FIG. 2 is a perspective view of the electronic device of FIG. [Diagram 3]FIG. 1 is a plot of R2O-Al2O3 versus a* in CIELAB space (X-axis: R2O-Al2O3; Y-axis: a*) for a colored glass article produced from a glass composition and subjected to a heat treatment according to one or more embodiments described herein. [Figure 4] FIG. 1 is a plot of R2O-Al2O3 versus b* in CIELAB space (X-axis: R2O-Al2O3; Y-axis: b*) for a colored glass article produced from a glass composition and subjected to a heat treatment according to one or more embodiments described herein. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0078] Reference will now be made in detail to various embodiments of glass compositions and colored glass articles formed therefrom having a desired color. According to embodiments, the colored glass articles are made of glass compositions having a composition of at least 50 mol % and at most 80 mol % SiO 2 , 7 mol% or more and 25 mol% or less of Al 2 O 3 , 1 mol% or more and 15 mol% or less of B 2 O 3 , 5 mol% or more and 20 mol% or less of Li 2 O, 0.5 mol% or more and 15 mol% or less of Na 2 O, more than 0 mol% and not more than 1 mol% K 2 O, and 1 × 10 -6 R contains 1 mol % or more and 1 mol % or less of Au. 2 O-Al 2 O 3 is -5 mol % or more and 7 mol % or less, and R 2 O is Li 2 O, Na 2 O, and K 2 O. According to an embodiment, the colored glass article has a total of 50 mol % or more and 80 mol % or less of SiO 2 , 7 mol% or more and 25 mol% or less of Al 2 O 3 , 1 mol% or more and 15 mol% or less of B 2 O 3 , 7 mol% or more and 20 mol% or less of Li 2 O, 0.5 mol% or more and 12 mol% or less of Na2 O, more than 0 mol% and not more than 1 mol% K 2 O, and 1 × 10 -6 R contains 1 mol % or more and 1 mol % or less of Au. 2 O-Al 2 O 3 is -5 mol % or more and 5 mol % or less, R 2 O is Li 2 O, Na 2 O, and K 2 It is the sum of O.

[0079] Various embodiments of colored glass articles and methods of making same are now described with particular reference to the accompanying drawings.

[0080] Ranges may be expressed herein as from "about" one particular value, and / or to "about" another particular value. When such a range is expressed, another embodiment includes from the one particular value and / or to the other particular value. Similarly, when values ​​are expressed as approximations, by use of the antecedent "about," it will be understood that the particular value forms another embodiment. It will be further understood that the endpoints of each of the ranges are significant both in relation to the other endpoint, and independently of the other endpoint.

[0081] Any directional terms used herein - e.g., up, down, right, left, front, back, upper and bottom - are used only with reference to the drawings depicted and are not intended to imply absolute orientation.

[0082] Unless otherwise expressly stated, it is never intended that any method described herein be construed as requiring that its steps be performed in a particular order, or that any particular orientation of any apparatus be required. Thus, where a method claim does not actually recite an order in which its steps must be followed, or an apparatus claim does not actually recite an order or orientation for individual components, or where it is otherwise specifically stated in the claim or description that the steps are to be limited to a particular order, or where a particular order or orientation for the apparatus components is not recited, no order or orientation is ever intended to be implied. This applies to any possible non-expressive criteria of interpretation, including sequence of steps, flow of operations, order of components, or orientation of components; obvious meanings derived from grammatical construction or punctuation; and logical matters regarding the number or type of embodiments described in the specification.

[0083] As used herein, nouns include plural referents unless the context clearly indicates otherwise. Thus, for example, a reference to a component includes aspects having two or more of such components unless the context clearly indicates otherwise.

[0084] In embodiments of the glass compositions and resulting colored glass articles described herein, components that are in oxide form (e.g., SiO 2 , Al 2 O 3 , etc.) are specified in mole percent (mol %) on an oxide basis unless otherwise specified.

[0085] In the embodiments of the glass compositions and resulting colored glass articles described herein, concentrations of Au and Cl are specified in mole percent (mol %) unless otherwise specified.

[0086] The term "substantially free," when used to describe the concentration and / or absence of a particular component in a glass composition and the resulting colored glass article, means that the component is not intentionally added to the glass composition and the resulting colored glass article. However, the glass composition and the resulting colored glass article may contain trace amounts of the component as contaminants or contaminants in amounts less than 0.1 mole percent.

[0087] The terms "0 mol %" and "free," when used to describe the concentration and / or absence of a particular component in a glass composition and the resulting colored glass article, mean that the component is not present in the glass composition and the resulting colored glass article.

[0088] Fracture toughness (K IC ) represents the ability of a glass composition to resist fracture. Fracture toughness is determined by the K IC The fracture toughness test methods described herein are not suitable for glass that has been subjected to IOX processing. However, fracture toughness measurements made as described herein on the same glass (e.g., glass substrate) before IOX processing correlate with fracture toughness after IOX processing and are therefore used as such. IC The chevron notched small square bar (CNSB) method used to measure the Y * min Reddy, KPR et al., "Fracture Toughness Measurement of Glass and Ceramic Materials Using Chevron-Notched Specimens," J. Am. Ceram. Soc., 71[6], C-310-C-313 (1988), except that the fracture toughness values ​​are calculated using Equation 5 in Bubsey, RT et al., "Closed-Form Expressions for Crack-Mouth Displacement and Stress Intensity Factors for Chevron-Notched Short Bar and Short Rod Specimens Based on Experimental Compliance Measurements," NASA Technical Memorandum 83796, pp. 1-30 (October 1992). Unless otherwise noted, all fracture toughness values ​​were measured by the chevron notched small square bar (CNSB) method.

[0089] As used herein, the term "liquidus viscosity" refers to the viscosity of a glass composition at the onset of devitrification (ie, at the liquidus temperature determined according to the gradient furnace method per ASTM C829-81).

[0090] Surface compressive stress is measured by a surface stress meter (FSM), such as a commercially available instrument, such as the FSM-6000 manufactured by Orihara Seisakusho Co., Ltd. (Japan). Surface stress measurement relies on the measurement of the stress optical coefficient (SOC), which is related to the birefringence of the glass. The SOC is then measured according to procedure C (glass disk method) described in ASTM standard C770-16, entitled "Standard Test Method for Measurement of Glass Stress-Optical Coefficient," the contents of which are incorporated herein in their entirety. Depth of compression (DOC) is also measured with the FSM. Maximum central tension (CT) values ​​are measured using the Scattered Light Polariscope (SCALP) technique, which is known in the art.

[0091] As used herein, the term "depth of compression" (DOC) refers to the location in a glass article where compressive stresses change to tensile stresses.

[0092] As used herein, the term "CIELAB color space" refers to a color space defined by the International Commission on Illumination (CIE) in 1976. This color space represents color as three values: L, which represents lightness from black (0) to white (100); * , green (-) to red (+) a * , and blue (-) to yellow (+) b * .

[0093] As used herein, the term "color gamut" refers to the palette of colors that a colored glass article may exhibit within the CIELAB color space.

[0094] As used herein, "optical transmission spectra" were obtained using an Agilent Cary 60 spectrophotometer with a scan range of 250 nm to 800 nm, a scan step of 2 nm, a signal average of 0.5 seconds, and a spot size of 2 mm. The optical transmission data obtained was used to plot coordinates in the CIELAB color space as described in RS Berns, Billmeyer and Saltzman's Principles of Color Technology, 3rd ed., John Wiley & Sons, New York (2000).

[0095] To obtain colored glass articles with desired color and improved mechanical properties, colorants have been added to conventional aluminosilicate glass compositions. For example, gold (Au) doped glass articles generally appear red, orange, or purple. However, the inclusion of a colorant in an aluminosilicate glass composition alone may not produce the desired color.

[0096] Disclosed herein are glass compositions and colored glass articles formed therefrom that alleviate the above-mentioned problems, such that Au can be added to an aluminosilicate glass composition to produce a colored glass article having a desired color while maintaining excellent ion exchange and drop performance. Specifically, the concentrations of certain components may be adjusted to obtain the desired color and prevent precipitation of Au particles in the glass network.

[0097] The glass compositions and colored glass articles described herein may be described as aluminoborosilicate glass compositions and colored glass articles, and may be SiO 2 , Al 2 O 3 , and B. 2 O 3 The glass compositions and colored glass articles described herein include SiO 2 , Al 2 O 3 , and B. 2 O 3 In addition to Li, Au is included to produce a colored glass article having a desired color. The glass compositions and colored glass articles described herein contain Li to achieve ion exchangeability of the colored glass article. 2 O or Na 2 In addition, the glass compositions and resulting colored glass articles described herein may also include alkali oxides such as R and O. 2 O and Al 2 O 3 The difference between the 2 O(mol%)-Al 2 O 3 The content (mol %) of Au in the glass composition may be adjusted to produce a desired observable color (e.g., pink, purple, red, or orange). Additionally, the viscosity of the glass composition may be adjusted to prevent devitrification of the glass composition and precipitation of Au during melting and forming, which may limit the color gamut that can be obtained.

[0098] SiO 2is the primary glass former in the glass compositions described herein and may function to stabilize the network structure of the colored glass article. SiO 2 The concentration of SiO should be sufficiently high (e.g., 50 mole % or more) to improve the chemical durability of the glass composition, in particular the resistance of the glass composition to degradation upon exposure to acidic and basic solutions and in water. 2 The amount of pure SiO 2 or high SiO 2 The melting point of glass is undesirably high and is therefore often limited (e.g., to 80 mol % or less) to control the melting point of the glass composition. 2 Limiting the concentration of may help improve the meltability and formability of the resulting colored glass article.

[0099] In embodiments, the glass compositions and resulting colored glass articles contain 50 mol % or more and 80 mol % or less of SiO 2 In embodiments, the glass composition and the resulting colored glass article may comprise 52 mol % or more and 75 mol % or less of SiO 2 In embodiments, the SiO 2 in the glass composition and the resulting colored glass article. 2 The concentration of SiO in the glass composition and the resulting colored glass article may be 50 mol% or more, 52 mol% or more, 54 mol% or more, 56 mol% or more, 58 mol% or more, or even 60 mol% or more. 2 The concentration of SiO in the glass composition and the resulting colored glass article may be 80 mol% or less, 75 mol% or less, 73 mol% or less, 71 mol% or less, or even 69 mol% or less. 2The concentration of is 50 mol% or more and 80 mol% or less, 50 mol% or more and 75 mol% or less, 50 mol% or more and 73 mol% or less, 50 mol% or more and 71 mol% or less, 50 mol% or more and 69 mol% or less, 52 mol% or more and 80 mol% or less, 52 mol% or more and 75 mol% or less, 52 mol% or more and 73 mol% or less, 52 mol% or more and 71 mol% or less, 52 mol% or more and 69 mol% or less, 54 mol% or more and 80 mol% or less, 54 mol% or more and 75 mol% or less, 54 mol% or more and 73 mol% or less, 54 mol% or more and 71 mol% or less, 54 mol% or more and 69 mol% or less, 56 mol% or more and 80 ... % to 75 mol %, 56 mol % to 73 mol %, 56 mol % to 71 mol %, 56 mol % to 69 mol %, 58 mol % to 80 mol %, 58 mol % to 75 mol %, 58 mol % to 73 mol %, 58 mol % to 71 mol %, 58 mol % to 69 mol %, 50 mol % to 80 mol %, 60 mol % to 75 mol %, 60 mol % to 73 mol %, 60 mol % to 71 mol %, or even 60 mol % to 69 mol %, or any and all subranges formed from any of these endpoints.

[0100] Al 2 O 3 Also, SiO 2 As such, it may stabilize the glass network and, in addition, impart improved mechanical properties and chemical durability to the glass composition and the resulting colored glass article. 2 O 3 The amount of Al may be adjusted to control the viscosity of the glass composition. 2 O 3 is that the resulting glass composition has a desired fracture toughness (e.g., 0.7 MPa m 1 / 2 However, Al may be included as having 2 O 3 Too high an amount (eg, greater than 25 mole percent) can increase the viscosity of the glass melt, thereby impairing the formability of the colored glass article.

[0101] Thus, in embodiments, the glass composition and the resulting colored glass article may contain 7 mol % or more and 25 mol % or less Al. 2 O 3 In embodiments, the glass composition and the resulting colored glass article may include 9 mol % or more and 23 mol % or less of Al. 2 O 3 In embodiments, the glass composition and the resulting colored glass article may include 11 mol % or more and 20 mol % or less of Al. 2 O 3 In an embodiment, the Al in the glass composition and the resulting colored glass article may include 2 O 3 The concentration of Al in the glass composition and the resulting colored glass article may be 7 mol% or more, 9 mol% or more, 11 mol% or more, or even 13 mol% or more. 2 O 3 The concentration of Al in the glass composition and the resulting colored glass article may be 25 mol% or less, 23 mol% or less, 20 mol% or less, or even 17 mol% or less. 2 O 3 can be in the range of from 7 mol% to 25 mol%, from 7 mol% to 23 mol%, from 7 mol% to 20 mol%, from 7 mol% to 17 mol%, from 9 mol% to 25 mol%, from 9 mol% to 23 mol%, from 9 mol% to 20 mol%, from 9 mol% to 17 mol%, from 11 mol% to 25 mol%, from 11 mol% to 23 mol%, from 11 mol% to 20 mol%, from 11 mol% to 17 mol%, from 13 mol% to 25 mol%, from 13 mol% to 23 mol%, from 13 mol% to 20 mol%, from 13 mol% to 17 mol%, or any and all subranges formed from any of these endpoints.

[0102] B 2 O3 helps to improve the damage resistance of the resulting colored glass article. 2 O 3 reduces the formation of non-bridging oxygen, the presence of which can reduce fracture toughness. 2 O 3 The concentration of should be high enough (e.g., 1 mole % or more) to lower the melting point of the glass composition, improve formability, and increase the fracture toughness of the colored glass article. 2 O 3 Too much (eg, greater than 15 mole percent) can reduce the anneal point and strain point, thereby increasing stress relaxation and reducing the overall strength of the colored glass article.

[0103] In an embodiment, the glass composition and the resulting colored glass article contain 1 mol % or more and 15 mol % or less of B. 2 O 3 In embodiments, the glass composition and the resulting colored glass article may contain 2 mol % or more and 12 mol % or less of B. 2 O 3 In embodiments, the glass composition and the resulting colored glass article may contain 3 mol % or more and 10 mol % or less of B. 2 O 3 In embodiments, the B in the glass composition and the resulting colored glass article may include 2 O 3 The concentration of B in the glass composition and the resulting colored glass article may be 1 mol% or more, 2 mol% or more, 3 mol% or more, or even 4 mol% or more. 2 O 3 The concentration of B in the glass composition and the resulting colored glass article may be 15 mol% or less, 12 mol% or less, 10 mol% or less, 8 mol% or less, or even 6 mol% or less. 2 O 3can be in the range of from greater than or equal to 1 mol% to less than 15 mol%, from greater than or equal to 12 mol%, from greater than or equal to 1 mol% to less than 10 mol%, from greater than or equal to 1 mol% to less than 8 mol%, from greater than or equal to 1 mol% to less than 6 mol%, from greater than or equal to 2 mol% to less than 15 mol%, from greater than or equal to 2 mol% to less than 12 mol%, from greater than or equal to 2 mol% to less than 10 mol%, from greater than or equal to 2 mol% to less than 8 mol%, from greater than or equal to 2 mol% to less than 6 mol%, from greater than or equal to 3 mol% to less than 15 mol%, from greater than or equal to 3 mol% to less than 12 mol%, from greater than or equal to 3 mol% to less than 10 mol%, from greater than or equal to 3 mol% to less than 8 mol%, from greater than or equal to 3 mol% to less than 6 mol%, from greater than or equal to 4 mol% to less than 15 mol%, from greater than or equal to 12 mol%, from greater than or equal to 4 mol% to less than 10 mol%, from greater than or equal to 4 mol% to less than 8 mol%, or even from greater than or equal to 4 mol% to less than 6 mol%, or any and all subranges formed from any of these endpoints.

[0104] As previously mentioned, the glass compositions and the resulting colored glass articles may contain Li to achieve ion exchangeability of the colored glass articles. 2 O, Na 2 O, and K 2 It may contain alkali oxides such as O.

[0105] Li 2 O also aids in the ion exchangeability of the colored glass article and reduces the softening point of the glass composition, thereby enhancing the formability of the colored glass article. 2 O reduces the melting point of the glass composition, which will help improve the retention of Au. Li in the glass composition and the resulting colored glass article. 2 The concentration of O should be high enough (e.g., 5 mol % or more) to lower the melting point of the glass composition and achieve the desired maximum central tension (e.g., 40 MPa or more) after ion exchange. However, Li 2 Too much O (e.g., greater than 20 mol %) can increase the liquidus temperature and reduce the manufacturability of colored glass articles.

[0106] In embodiments, the glass compositions and resulting colored glass articles contain 5 mol% or more and 20 mol% or less, or 7 mol% or more and 20 mol% or less, of Li. 2 In embodiments, the glass composition and the resulting colored glass article may contain 7 mol % or more and 18 mol % or less Li. 2 In embodiments, the glass composition and the resulting colored glass article may contain 9 mol % or more and 16 mol % or less Li. 2 In embodiments, the glass composition and the resulting colored glass article may contain Li. 2 The concentration of LiO in the glass composition and the resulting colored glass article may be 5 mol% or more, 7 mol% or more, or even 9 mol% or more. 2 The concentration of LiO in the glass composition and the resulting colored glass article may be 20 mol% or less, 18 mol% or less, 16 mol% or less, 14 mol% or less, or even 12 mol% or less. 2 The concentration of O can be greater than or equal to 5 mol% and less than or equal to 20 mol%, greater than or equal to 18 mol%, greater than or equal to 5 mol% and less than or equal to 16 mol%, greater than or equal to 5 mol% and less than or equal to 14 mol%, greater than or equal to 5 mol% and less than or equal to 12 mol%, greater than or equal to 7 mol% and less than or equal to 20 mol%, greater than or equal to 7 mol% and less than or equal to 18 mol%, greater than or equal to 7 mol% and less than or equal to 16 mol%, greater than or equal to 7 mol% and less than or equal to 14 mol%, greater than or equal to 7 mol% and less than or equal to 12 mol%, greater than or equal to 9 mol% and less than or equal to 20 mol%, greater than or equal to 9 mol% and less than or equal to 18 mol%, greater than or equal to 9 mol% and less than or equal to 16 mol%, greater than or equal to 9 mol% and less than or equal to 14 mol%, or even greater than or equal to 9 mol% and less than or equal to 12 mol%, or any and all subranges formed from any of these endpoints.

[0107] Na 2 O improves the diffusivity of alkali ions in the glass, thereby reducing the ion exchange time and helping to achieve the desired surface compressive stress (e.g., 300 MPa or more). 2O also improves the formability of colored glass articles. However, Na added to the glass composition 2 Too much O can result in a too low melting point. Therefore, in embodiments, the Li present in the glass composition and the resulting colored glass article is 2 The concentration of NaO present in the glass composition and the resulting colored glass article. 2 may be greater than the O concentration.

[0108] In embodiments, the glass compositions and resulting colored glass articles contain from 0.5 mol % to 15 mol % or from 0.5 mol % to 12 mol % Na. 2 In embodiments, the glass composition and the resulting colored glass article may contain 1 mol % or more and 12 mol % or less of Na. 2 In embodiments, the glass composition and the resulting colored glass article may contain 2 mol % or more and 10 mol % or less Na. 2 In an embodiment, Na in the glass composition and the resulting colored glass article may contain O. 2 The concentration of O may be 0.5 mol% or more, 1 mol% or more, 2 mol% or more, 3 mol% or more, or even 4 mol% or more. In embodiments, the NaO concentration in the glass composition and the resulting colored glass article is 0.5 mol% or more, 1 mol% or more, 2 mol% or more, 3 mol% or more, or even 4 mol% or more. 2 The concentration of O may be 15 mol% or less, 12 mol% or less, 10 mol% or less, 8 mol% or less, or even 6 mol% or less. In embodiments, the concentration of Na in the glass composition and the resulting colored glass article is 10 mol% or less. 2The O concentration is 0.5 mol% or more and 15 mol% or less, 0.5 mol% or more and 12 mol% or less, 0.5 mol% or more and 10 mol% or less, 0.5 mol% or more and 8 mol% or less, 0.5 mol% or more and 6 mol% or less, 1 mol% or more and 15 mol% or less, 1 mol% or more and 12 mol% or less, 1 mol% or more and 10 mol% or less, 1 mol% or more and 8 mol% or less, 1 mol% or more and 6 mol% or less, 2 mol% or more and 15 mol% or less, 2 mol% or more and 12 mol% or less, 2 mol% or more and 10 mol% or less, 2 mol% or more and 10 mol% or less, 2 mol% or more and 15 mol% or less, 2 mol% or more and 12 mol% or less, 2 mol% or more and 10 mol% or less, 2 mol% or more and 15 ... and 8 mol% or less, 2 mol% and 6 mol% or less, 3 mol% and 15 mol% or more, 3 mol% and 12 mol% or more, 3 mol% and 10 mol% or more, 3 mol% and 8 mol% or less, 3 mol% and 6 mol% or more, 4 mol% and 15 mol% or more, 4 mol% and 12 mol% or more, 4 mol% and 10 mol% or more, 4 mol% and 8 mol% or less, or even 4 mol% and 6 mol% or less, or any and all subranges formed from any of these endpoints.

[0109] K 2 O promotes ion exchange, which can increase the compression depth and lower the melting point, improving the formability of colored glass articles. However, too much K 2 Addition of O may result in too low a surface compressive stress and melting point. Therefore, in an embodiment, K is added to the glass composition. 2 The amount of O may be limited.

[0110] In embodiments, the glass compositions and resulting colored glass articles contain greater than 0 mol% and less than or equal to 1 mol% K. 2 In embodiments, the glass composition and the resulting colored glass article may contain greater than 0.1 mol % and less than or equal to 0.5 mol % K. 2 In an embodiment, the glass composition and the resulting colored glass article may optionally contain K. 2The concentration of O may be greater than 0 mol %, or even greater than or equal to 0.1 mol %. In embodiments, the concentration of K in the glass composition and the resulting colored glass article may be greater than or equal to 0. 2 The concentration of O may be 1 mol % or less, 0.5 mol % or less, or even 0.25 mol % or less. In embodiments, the concentration of K in the glass composition and the resulting colored glass article is 0.01 mol % or less. 2 The concentration of O can be greater than 0 mol% and less than or equal to 1 mol%, greater than 0 mol% and less than or equal to 0.5 mol%, greater than 0 mol% and less than or equal to 0.25 mol%, greater than or equal to 0.1 mol% and less than or equal to 1 mol%, greater than or equal to 0.1 mol% and less than or equal to 0.5 mol%, and even greater than or equal to 0.1 mol% and less than or equal to 0.25 mol%, or any and all subranges formed from any of these endpoints.

[0111] As used here, R 2 O is Na present in the glass composition 2 OK 2 O, and Li 2 The sum of O (mol%) (i.e., R 2 O=Na 2 O (mol%) + K 2 O(mol%)+Li 2 O (mol%). As mentioned here, Na 2 OK 2 O, and Li 2 Alkali oxides such as O reduce the softening point and forming temperature of the glass composition, thereby reducing, for example, the amount of SiO in the glass composition. 2 The high amount of alkali oxides helps to offset the increase in the softening point and forming temperature of the glass composition due to the large amount of alkali oxides. The softening point and forming temperature can be further reduced by introducing a combination of alkali oxides (e.g., two or more alkali oxides) in the glass composition, a phenomenon referred to as the "mixed alkali effect." However, too much alkali oxide can increase the average thermal expansion coefficient of the glass composition by more than 100×10 -7 / °C, which would be undesirable.

[0112] In an embodiment, R in the glass composition and the resulting colored glass article 2 The concentration of O may be 6 mol % or more and 25 mol % or less. In an embodiment, the R in the glass composition and the resulting colored glass article 2 The concentration of O may be 8 mol % or more and 23 mol % or less. In an embodiment, the R in the glass composition and the resulting colored glass article 2 The concentration of O may be 6 mol% or more, 8 mol% or more, greater than 10 mol%, 12 mol% or more, or even 14 mol% or more. In embodiments, the R in the glass composition and the resulting colored glass article is 2 The concentration of O may be 25 mol% or less, 23 mol% or less, 20 mol% or less, or even 18 mol% or less. In embodiments, the R in the glass composition and the resulting colored glass article is 2 The O concentration is 6 mol% or more and 25 mol% or less, 6 mol% or more and 23 mol% or less, 6 mol% or more and 20 mol% or less, 6 mol% or more and 18 mol% or less, 8 mol% or more and 25 mol% or less, 8 mol% or more and 23 mol% or less, 8 mol% or more and 20 mol% or less, 8 mol% or more and 18 mol% or less, 10 mol% or more and 25 mol% or less, 10 mol% or more and 23 mol% or less, 10 mol% or more and 20 ... and 18 mol % or less, at least 12 mol % and 25 mol % or less, at least 12 mol % and 23 mol % or less, at least 12 mol % and 20 mol % or less, at least 12 mol % and 18 mol % or less, at least 14 mol % and 25 mol % or less, at least 14 mol % and 23 mol % or less, at least 14 mol % and 20 mol % or less, and even at least 14 mol % and 18 mol % or less, or any and all subranges formed from any of these endpoints.

[0113] In an embodiment, R in the glass composition 2 O and Al 2 O 3 The difference between (i.e., R 2 O(mol%)-Al 2 O 3(mol %) may be adjusted to produce a desired observable color (e.g., pink, purple, red, or orange). Analysis of the resulting colored glass article 2 O-Al 2 O 3 may be correlated with the observable color of the colored glass article after heat treatment, as described herein, along with the temperature and time of the heat treatment. 2 O-Al 2 O 3 may be greater than or equal to -5 mol% and less than or equal to 7 mol%, or greater than or equal to -5 mol% and less than or equal to 5 mol%. In embodiments, R in the glass composition and the resulting colored glass article 2 O-Al 2 O 3 In an embodiment, R in the glass composition and the resulting colored glass article may be greater than or equal to -3 mol % and less than or equal to 6 mol %. 2 O-Al 2 O 3 In an embodiment, R in the glass composition and the resulting colored glass article may be greater than or equal to -1 mol % and less than or equal to 5 mol %. 2 O-Al 2 O 3 In an embodiment, R in the glass composition and the resulting colored glass article may be greater than or equal to -5 mol % and less than or equal to 1.5 mol %. 2 O-Al 2 O 3 In an embodiment, R in the glass composition and the resulting colored glass article may be greater than or equal to -3 mol % and less than or equal to 1.5 mol %. 2 O-Al 2 O 3 In an embodiment, the R in the glass composition and the resulting colored glass article may be greater than or equal to 1.5 mol % and less than or equal to 7 mol %. 2 O-Al 2 O 3In an embodiment, R in the glass composition and the resulting colored glass article may be 1.5 mol % or more and 5 mol % or less. 2 O-Al 2 O 3 may be -5 mol% or more, -3 mol% or more, -1 mol% or more, 0 mol% or more, or even 1.5 mol% or more. In embodiments, R in the glass composition and the resulting colored glass article may be -5 mol% or more, -3 mol% or more, -1 mol% or more, 0 mol% or more, or even 1.5 mol% or more. 2 O-Al 2 O 3 may be 7 mol% or less, 5 mol% or less, 3 mol% or less, or even 1.5 mol% or less. In embodiments, R in the glass composition and the resulting colored glass article 2 O-Al 2 O 3 may be between -5 mol% and 7 mol%, between -5 mol% and 5 mol%, between -5 mol% and 3 mol%, between -5 mol% and 1.5 mol%, between -3 mol% and 7 mol%, between -3 mol% and 5 mol%, between -3 mol% and 3 mol%, between -3 mol% and 1.5 mol%, between -1 mol% and 7 mol%, between -1 mol% and 5 mol%, between -1 mol% and 3 mol%, between -1 mol% and 1.5 mol%, between 0 mol% and 7 mol%, between 0 mol% and 5 mol%, between 0 mol% and 3 mol%, between 0 mol% and 1.5 mol%, between 1.5 mol% and 7 mol%, between 1.5 mol% and 5 mol%, or even between 1.5 mol% and 3 mol%, or any and all subranges formed from any of these endpoints.

[0114] The glass compositions and resulting colored glass articles described herein include ZrO 2 It may further contain ZrO 2 In addition to Au, ZrO may function as a colorant, for example, to produce a colored glass article that is red in color. In embodiments, the glass composition and the resulting colored glass article may contain 0.01 mol % or more and 2 mol % or less ZrO 2In embodiments, the glass composition and the resulting colored glass article may include 0.1 mol % or more and 1.5 mol % or less ZrO. 2 In an embodiment, the glass composition may include ZrO 2 The concentration of ZrO in the glass composition may be 0 mol % or more, 0.01 mol % or more, 0.1 mol % or more, or even 0.2 mol % or more. 2 The concentration of ZrO in the glass composition may be 2 mol % or less, 1.5 mol % or less, 1 mol % or less, 0.75 mol % or less, or even 0.5 mol % or less. 2 The concentration of is 0 mol% or more and 2 mol% or less, 0 mol% or more and 1.5 mol% or less, 0 mol% or more and 1 mol% or less, 0 mol% or more and 0.75 mol% or less, 0 mol% or more and 0.5 mol% or less, 0.01 mol% or more and 2 mol% or less, 0.01 mol% or more and 1.5 mol% or less, 0.01 mol% or more and 1 mol% or less, 0.01 mol% or more and 0.75 mol% or less, 0.01 mol% or more and 0.5 mol% or less, 0.1 mol% or more and 2 mol% or less, 0.1 mol% or more and 0.1 mol% or less % to 1.5 mol%, 0.1 mol% to 1 mol%, 0.1 mol% to 0.75 mol%, 0.1 mol% to 0.5 mol%, 0.2 mol% to 2 mol%, 0.2 mol% to 1.5 mol%, 0.2 mol% to 1 mol%, 0.2 mol% to 0.75 mol%, or even 0.2 mol% to 0.5 mol%, or any and all subranges formed from any of these endpoints. In an embodiment, the glass composition and the resulting colored glass article may comprise ZrO 2 may be free or substantially free of

[0115] The glass compositions and resulting colored glass articles described herein include Fe 2 O 3 May further contain Fe. 2 O 3In addition to Au, Fe may also function as a colorant, producing a colored glass article that is, for example, pink or red. In embodiments, the glass composition and resulting colored glass article may contain 0.01 mol % or more and 1 mol % or less of Fe. 2 O 3 In embodiments, the glass composition and the resulting colored glass article may contain 0.05 mol % or more and 1 mol % or less of Fe. 2 O 3 In embodiments, the glass composition and the resulting colored glass article may include Fe. 2 O 3 The concentration of Fe in the glass composition and the resulting colored glass article may be 0 mol % or more, 0.01 mol % or more, or even 0.05 mol % or more. 2 O 3 The concentration of Fe in the glass composition and the resulting colored glass article may be 1 mol % or less, 0.75 mol % or less, 0.5 mol % or less, or even 0.25 mol % or less. 2 O 3 can be in the range of from 0 mol% to 1 mol%, from 0 mol% to 0.75 mol%, from 0 mol% to 0.5 mol%, from 0 mol% to 0.25 mol%, from 0.01 mol% to 1 mol%, from 0.01 mol% to 0.75 mol%, from 0.01 mol% to 0.5 mol%, from 0.01 mol% to 0.25 mol%, from 0.05 mol% to 1 mol%, from 0.05 mol% to 0.75 mol%, from 0.05 mol% to 0.5 mol%, or even from 0.05 mol% to 0.25 mol%, or any and all subranges formed from any of these endpoints. In an embodiment, the glass composition and the resulting colored glass article can be in the range of from 0 mol% to 1 mol%, from 0 mol% to 0.75 mol%, from 0 mol% to 0.5 mol%, from 0 mol% to 0.25 mol%, from 0.01 mol% to 1 mol%, from 0.05 mol% to 0.75 mol%, from 0.05 mol% to 0.5 mol%, or even from 0.05 mol% to 0.25 mol%, or any and all subranges formed from any of these endpoints. 2 O 3 may be free or substantially free of

[0116] The glass compositions and resulting colored glass articles described herein may further include one or more fining agents. In embodiments, the fining agents include, for example, SnO 2 In embodiments, the glass composition and the resulting colored glass article may contain from 0.01 mol % to 1 mol % SnO 2 In embodiments, the glass composition and the resulting colored glass article may include 0.05 mol % or more and 0.75 mol % or less of SnO. 2 In embodiments, SnO in the glass composition and the resulting colored glass article. 2 The concentration of SnO in the glass composition and the resulting colored glass article may be 0 mol % or more, 0.01 mol % or more, or 0.05 mol % or more. 2 The concentration of SnO in the glass composition and the resulting colored glass article may be 1 mol % or less, 0.75 mol % or less, 0.5 mol % or less, or even 0.25 mol % or less. 2 can be in the range of from 0 mol% to 1 mol%, from 0 mol% to 0.75 mol%, from 0 mol% to 0.5 mol%, from 0 mol% to 0.25 mol%, from 0.01 mol% to 1 mol%, from 0.01 mol% to 0.75 mol%, from 0.01 mol% to 0.5 mol%, from 0.01 mol% to 0.25 mol%, from 0.05 mol% to 1 mol%, from 0.05 mol% to 0.75 mol%, from 0.05 mol% to 0.5 mol%, or even from 0.01 mol% to 0.25 mol%, or any and all subranges formed from any of these endpoints. In an embodiment, the glass composition and the resulting colored glass article can be in the range of from 0 mol% to 1 mol%, from 0 mol% to 0.75 mol%, from 0 mol% to 0.5 mol%, from 0 mol% to 0.25 mol%, from 0.01 mol% to 1 mol%, from 0.05 mol% to 0.75 mol%, from 0.05 mol% to 0.5 mol%, or even from 0.01 mol% to 0.25 mol%, or any and all subranges formed from any of these endpoints. 2 may be free or substantially free of

[0117] In embodiments, the glass compositions and the resulting colored glass articles may include alkaline earth oxides, such as MgO, ZnO, CaO, SrO, and BaO.

[0118] In embodiments, the concentration of MgO in the glass composition and the resulting colored glass article may be 0 mol% or more, or even 0.5 mol% or more. In embodiments, the concentration of MgO in the glass composition and the resulting colored glass article may be 2 mol% or less, or even 1 mol% or less. In embodiments, the concentration of MgO in the glass composition and the resulting colored glass article may be 0 mol% or more and 2 mol% or less, 0 mol% or more and 1 mol% or more, 0.5 mol% or more and 2 mol% or less, or even 0.5 mol% or more and 1 mol% or more, or any and all subranges formed from any of these endpoints. In embodiments, the glass composition and the resulting colored glass article may be free or substantially free of MgO.

[0119] In embodiments, the concentration of ZnO in the glass composition and the resulting colored glass article may be 0 mol% or more, or even 0.5 mol% or more. In embodiments, the concentration of ZnO in the glass composition and the resulting colored glass article may be 2 mol% or less, or even 1 mol% or less. In embodiments, the concentration of ZnO in the glass composition and the resulting colored glass article may be 0 mol% or more and 2 mol% or less, 0 mol% or more and 1 mol% or more, 0.5 mol% or more and 2 mol% or less, or even 0.5 mol% or more and 1 mol% or less, or any and all subranges formed from any of these endpoints. In embodiments, the glass composition and the resulting colored glass article may be free or substantially free of ZnO.

[0120] In embodiments, the concentration of CaO in the glass composition and the resulting colored glass article may be 0 mol% or more, or 0.5 mol% or more. In embodiments, the concentration of CaO in the glass composition and the resulting colored glass article may be 2 mol% or less, or 1 mol% or less. In embodiments, the concentration of CaO in the glass composition and the resulting colored glass article may be 0 mol% or more and 2 mol% or less, 0 mol% or more and 1 mol% or more, 0.5 mol% or more and 2 mol% or more, or even 0.5 mol% or more and 1 mol% or more, or any and all subranges formed from any of these endpoints. In embodiments, the glass composition and the resulting colored glass article may be free or substantially free of CaO.

[0121] In embodiments, the concentration of SrO in the glass composition and the resulting colored glass article may be 0 mol% or more, or 0.5 mol% or more. In embodiments, the concentration of SrO in the glass composition and the resulting colored glass article may be 2 mol% or less, or 1 mol% or less. In embodiments, the concentration of SrO in the glass composition and the resulting colored glass article may be 0 mol% or more and 2 mol% or less, 0 mol% or more and 1 mol% or more, 0.5 mol% or more and 2 mol% or less, or even 0.5 mol% or more and 1 mol% or more, or any and all subranges formed from any of these endpoints. In embodiments, the glass composition and the resulting colored glass article may be free or substantially free of SrO.

[0122] In embodiments, the concentration of BaO in the glass composition and the resulting colored glass article may be 0 mol% or more, or 0.5 mol% or more. In embodiments, the concentration of BaO in the glass composition and the resulting colored glass article may be 2 mol% or less, or 1 mol% or less. In embodiments, the concentration of BaO in the glass composition and the resulting colored glass article may be 0 mol% or more and 2 mol% or less, 0 mol% or more and 1 mol% or more, 0.5 mol% or more and 2 mol% or less, or even 0.5 mol% or more and 1 mol% or more, or any and all subranges formed from any of these endpoints. In embodiments, the glass composition and the resulting colored glass article may be free or substantially free of BaO.

[0123] In embodiments, the glass composition and the resulting colored glass article may include Cl, which may enable the growth of certain Au particles. In embodiments, the concentration of Cl in the glass composition and the resulting colored glass article may be 0 mol% or more, or 0.1 mol% or more. In embodiments, the concentration of Cl in the glass composition and the resulting colored glass article may be 0.5 mol% or less, or 0.25 mol% or less. In embodiments, the concentration of Cl in the glass composition and the resulting colored glass article may be 0 mol% or more and 0.5 mol% or less, 0 mol% or less, 0.25 mol% or less, 0.1 mol% or more and 0.5 mol% or more, or even 0.1 mol% or more and 0.25 mol% or less, or any and all subranges formed from any of these endpoints. In embodiments, the glass composition and the resulting colored glass article may be free or substantially free of Cl.

[0124] In embodiments, the glass compositions and resulting colored glass articles may be free or substantially free of MgO, CaO, ZnO, Cl, or combinations thereof.

[0125] The glass compositions and resulting colored glass articles described herein further include Au as a colorant to obtain a desired color. In embodiments, the glass compositions and resulting colored glass articles have a colorant concentration of 1×10 -6 % to 1 mol % Au. In embodiments, the glass composition and the resulting colored glass article may contain 0.0001 mol % to 0.1 mol % Au. In embodiments, the concentration of Au in the glass composition and the resulting colored glass article is greater than or equal to 1×10 -6 mol% or more, 1×10 -5 % or more, 0.0001 mol % or more, 0.0005 mol % or more, or even 0.001 mol % or more. In embodiments, the concentration of Au in the glass composition and the resulting colored glass article may be 1 mol % or less, 0.75 mol % or less, 0.5 mol % or less, 0.25 mol % or less, 0.1 mol % or less, 0.05 mol % or less, or even 0.01 mol % or less. In embodiments, the concentration of Au in the glass composition and the resulting colored glass article may be 1×10 -6 mol% or more and 0.75 mol% or less, 1 x 10 -6 mol% or more and 0.5 mol% or less, 1 x 10 -6 mol% or more and 0.25 mol% or less, 1 x 10 -6 mol% or more and 0.1 mol% or less, 1 x 10 -6 mol% or more and 0.05 mol% or less, 1 x 10 -6 mol% or more and 0.01 mol% or less, 1 x 10 -5 mol% or more and 1 mol% or less, 1 x 10 -5 mol% or more and 0.75 mol% or less, 1 x 10 -5 mol% or more and 0.5 mol% or less, 1 x 10 -5 mol% or more and 0.25 mol% or less, 1 x 10 -5 mol% or more and 0.1 mol% or less, 1 x 10 -5 mol% or more and 0.05 mol% or less, 1 x 10 -5mol% or more and 0.01 mol% or less, 0.0001 mol% or more and 1 mol% or less, 0.0001 mol% or more and 0.75 mol% or less, 0.0001 mol% or more and 0.5 mol% or less, 0.0001 mol% or more and 0.25 mol% or less, 0.0001 mol% or more and 0.1 mol% or less, 0.0001 mol% or more and 0.05 mol% or less, 0.0001 mol% or more and 0.01 mol% or less, 0.0005 mol% or more and 1 mol% or less, 0.0005 mol% or more and 0.75 mol% or less, 0.0005 mol% or more and 0.5 mol% or less, 0.0005 mol% or more and 0.25 mol% or less, 0. The range may be from 0005 mol % to 0.1 mol %, from 0.0005 mol % to 0.05 mol %, from 0.0005 mol % to 0.01 mol %, from 0.001 mol % to 1 mol %, from 0.001 mol % to 0.75 mol %, from 0.001 mol % to 0.5 mol %, from 0.001 mol % to 0.25 mol %, from 0.001 mol % to 0.1 mol %, from 0.001 mol % to 0.05 mol %, or even from 0.001 mol % to 0.01 mol %, or any and all subranges formed from any of these endpoints.

[0126] In embodiments, the glass compositions and resulting colored glass articles described herein contain TiO 2 , MnO, MoO 3 , WO 3 , Y 2 O 3 , CdO, As 2 O 3 In embodiments, the glass composition and the resulting colored glass article may further include contaminants such as TiO 2 , MnO, MoO 3 , WO 3 , Y 2 O 3 , CdO, As 2 O 3The glass compositions may be free or substantially free of contaminants such as fluorine, sulfur-based compounds such as sulfates, halogens, or combinations thereof. In embodiments, antimicrobial components, chemical fining agents, or other additional components may be included in the glass compositions and the resulting colored glass articles.

[0127] In embodiments, the viscosity of the glass composition may be adjusted to prevent devitrification of the glass composition and the formation of Au particles during melting and forming. The formation of Au particles prior to melting may limit the color gamut that may be obtained by heat treatment. Thus, in embodiments, to achieve the desired viscosity and thereby prevent the formation of Au particles prior to melting, the glass compositions and resulting colored glass articles described herein have a relationship of 5.72% or more of -609 mol %. * Al 2 O 3 (mol%)-21.4 * ZnO (mol%)-2.5 * P 2 O 5 (mol%)-35 * Li 2 O (mol%) - 16.6 * B 2 O 3 (mol%)-20.5 * MgO (mol%) - 23.3 * Na 2 O (mol%) - 27.9 * SrO (mol%)-18.5 * K 2 O (mol%) - 26.3 * In embodiments, the glass compositions and resulting colored glass articles described herein may satisfy the relationship 5.72 CaO (mol%) of greater than -609 mol%, -575 mol% or greater, -550 mol% or greater, or even -525 mol% or greater. * Al 2 O 3 (mol%)-21.4 * ZnO (mol%)-2.5 * P 2 O 5 (mol%)-35 * Li2 O (mol%) - 16.6 * B 2 O 3 (mol%)-20.5 * MgO (mol%) - 23.3 * Na 2 O (mol%) - 27.9 * SrO (mol%)-18.5 * K 2 O (mol%) - 26.3 * In embodiments, the glass compositions and resulting colored glass articles described herein may satisfy the relationship 5.72 CaO (mol%) of -400 mol% or less, -425 mol% or less, or even -450 mol% or less. * Al 2 O 3 (mol%)-21.4 * ZnO (mol%)-2.5 * P 2 O 5 (mol%)-35 * Li 2 O (mol%) - 16.6 * B 2 O 3 (mol%)-20.5 * MgO (mol%) - 23.3 * Na 2 O (mol%) - 27.9 * SrO (mol%)-18.5 * K 2 O (mol%) - 26.3 *In embodiments, the glass compositions and resulting colored glass articles described herein may have a CaO (mol%) relationship of greater than -609 mol% and less than or equal to -400 mol%, greater than -609 mol% and less than or equal to -425 mol%, greater than -609 mol% and less than or equal to -450 mol%, greater than or equal to -575 mol% and less than or equal to -400 mol%, greater than or equal to -575 mol% and less than or equal to -425 mol%, greater than or equal to -57 mol% and less than or equal to -450 mol%, greater than or equal to -550 mol% and less than or equal to -400 mol%, greater than or equal to -550 mol% and less than or equal to -425 mol%, greater than or equal to -550 mol% and less than or equal to -450 mol%, greater than or equal to -525 mol% and less than or equal to -400 mol%, greater than or equal to -525 mol% and less than or equal to -425 mol%, and even greater than or equal to -525 mol% and less than or equal to -450 mol%, or any and all subranges formed from any of these endpoints. * Al 2 O 3 (mol%)-21.4 * ZnO (mol%)-2.5 * P 2 O 5 (mol%)-35 * Li 2 O (mol%) - 16.6 * B 2 O 3 (mol%)-20.5 * MgO (mol%) - 23.3 * Na 2 O (mol%) - 27.9 * SrO (mol%)-18.5 * K 2 O (mol%) - 26.3 * CaO (mol%) may be satisfied.

[0128] In embodiments, a process for producing a glass article includes heat treating a glass composition described herein at one or more preselected temperatures for one or more preselected times to induce glass homogenization. In embodiments, the heat treatment to produce the glass article may include (i) heating the glass composition to a glass homogenization temperature at a rate of 1-100°C / min, (ii) maintaining the glass composition at the glass homogenization temperature for a period of at least 0.25 hours and not more than 4 hours to produce the glass article, and (iii) cooling the formed glass article to room temperature. In embodiments, the glass homogenization temperature may be at least 300°C and not more than 700°C.

[0129] The glass compositions described herein contain Au, R 2 O, and Al 2 O 3 Includes: R 2 O and Al 2 O 3 The concentration of R 2 O-Al 2 O 3 The difference in λ / 2 may be adjusted in combination with Au to produce a colored glass article having a desired color (e.g., pink, purple, red, or orange). In an embodiment, the colored glass article has an L of 50 or more and 100 or less, measured under an F2 illuminant and a standard observation angle of 10°, at an article thickness of 1.33 mm. * , a is between -15 and 25 * , and b between -25 and 25 * The transmittance color coordinates in the CIELAB color space may be:

[0130] Relatively low concentration of R 2 O-Al 2 O 3 At relatively high concentrations (e.g., 1.5 mol % or less), blue or purple glass articles may result. 2 O-Al 2 O 3 (e.g., greater than 1.5 mol %) may result in orange or red glass articles.

[0131] For example, in an embodiment, R 2 O-Al 2 O 3 may be greater than or equal to -5 mol % and less than or equal to 1.5 mol %, and b * may be greater than or equal to −25 and less than or equal to 10. In an embodiment, R 2 O-Al 2 O 3 may be greater than or equal to -3 mol % and less than or equal to 1.5 mol %, and b * may be greater than or equal to −15 and less than or equal to 7. 2 O-Al 2 O 3 may be greater than or equal to -5 mol % and less than or equal to 1.5 mol %, greater than or equal to -3 mol % and less than or equal to 1.5 mol %, greater than or equal to -1 mol % and less than or equal to 1.5 mol %, and even greater than or equal to 0 mol % and less than or equal to 1.5 mol %, or any and all subranges formed from any of these endpoints; * may be greater than or equal to -25 and less than or equal to 10, greater than or equal to -25 and less than or equal to 7, greater than or equal to -25 and less than or equal to 5, greater than or equal to -15 and less than or equal to 10, greater than or equal to -15 and less than or equal to 7, greater than or equal to -15 and less than or equal to 5, greater than or equal to -10 and less than or equal to 10, greater than or equal to -10 and less than or equal to 7, and even greater than or equal to -10 and less than or equal to 5, or any and all subranges formed from any of these endpoints.

[0132] In an embodiment, R 2 O-Al 2 O 3 may be greater than 1.5 mol% and less than or equal to 7 mol%, and b * may be greater than or equal to 0 and less than or equal to 25. In an embodiment, R 2 O-Al 2 O 3 may be greater than 1.5 mol% and less than or equal to 5 mol%, and b * may be greater than or equal to 0 and less than or equal to 15. In an embodiment, R 2 O-Al 2 O 3may be greater than 1.5 mol % and less than or equal to 7 mol %, greater than 1.5 mol % and less than or equal to 5 mol %, and even greater than 1.5 mol % and less than or equal to 3 mol %, or any and all subranges formed from any of these endpoints; * may be greater than or equal to 0 and less than or equal to 25, greater than or equal to 0 and less than or equal to 15, greater than or equal to 0 and less than or equal to 10, greater than or equal to 2.5 and less than or equal to 2.5 and less than or equal to 15, greater than or equal to 2.5 and less than or equal to 10, greater than or equal to 5 and less than or equal to 25, greater than or equal to 5 and less than or equal to 15, and even greater than or equal to 5 and less than or equal to 10, or any and all subranges formed from any of these endpoints.

[0133] In embodiments, the glass compositions and resulting colored glass articles contain 60 mol % or more and 70 mol % or less of SiO 2 11 mol% or more and 17 mol% or less of Al 2 O 3 , 2 mol% or more and 8 mol% or less of B 2 O 3 , 9 mol% or more and 14 mol% or less of Li 2 O, 2 mol% or more and 6 mol% or less of Na 2 O, 0.1 mol% or more and 0.5 mol% or less of K 2 O, and 1 × 10 -6 % to 0.05 mol % Au. 2 O-Al 2 O 3 is 0 mol % or more and 3 mol % or less, and R 2 O is Li 2 O, Na 2 O, and K 2 It is the sum of O.

[0134] Different color coordinates within the color gamut may be obtained by varying the heat treatment cycle used to produce the resulting colored glass article. The heat treatment cycle is characterized by the temperature of the environment (i.e., furnace) and the duration of the cycle (i.e., the time the glass article is exposed to the heated environment). As used herein, the phrase "temperature of the heat treatment cycle" refers to the temperature of the environment (i.e., furnace). In embodiments, glass articles formed from the glass compositions described herein are heat treated in an isothermal furnace to produce the resulting colored glass article.

[0135] In embodiments, the temperature of the heat treatment cycle is 500° C. or more, 550° C. or more, 575° C. or more, 600° C. or more, 625° C. or more, or even 650° C. or more. In embodiments, the temperature of the heat treatment cycle may be 800° C. or less, 775° C. or less, 750° C. or less, 725° C. or less, or even 700° C. or less. In an embodiment, the temperature of the heat treatment cycle is 500° C. to 800° C., 500° C. to 775° C., 500° C. to 750° C., 500° C. to 725° C., 550° C. to 700° C., 550° C. to 800° C., 550° C. to 775° C., 550° C. to 750° C., 550° C. to 725° C., 550° C. to 700° C., 575° C. to 800° C., 575° C. to 775° C., 575° C. to 750° C., 575° C. to 725° C., 575° C. to 700° C., 600° C. to 800° C. 0°C or less, 600°C or more and 775°C or less, 600°C or more and 750°C or less, 600°C or more and 725°C or more and 600°C or more and 700°C or less, 625°C or more and 800°C or more, 625°C or more and 775°C or less, 625°C or more and 750°C or more and 625°C or more and 725°C or more and 625°C or more and 700°C or more and 650°C or more and 800°C or less, 650°C or more and 775°C or more and 650°C or more and 750°C or more and 650°C or more and 725°C or more and even 650°C or more and 700°C or less, or any and all subranges formed from any of these endpoints.

[0136] In embodiments, the duration of the heat treatment cycle is 0.25 hours or more, 0.5 hours or more, 1 hour or more, or even 2 hours or more. In embodiments, the duration of the heat treatment cycle is 24 hours or less, 16 hours or less, 8 hours or less, or even 4 hours or less. In embodiments, the duration of the heat treatment cycle is from 0.25 to 24 hours, from 0.25 to 16 hours, from 0.25 to 8 hours, from 0.25 to 4 hours, from 0.5 to 24 hours, from 0.5 to 16 hours, from 0.5 to 8 hours, from 0.5 to 4 hours, from 1 to 24 hours, from 1 to 16 hours, from 1 to 8 hours, from 1 to 4 hours, from 2 to 24 hours, from 2 to 16 hours, from 2 to 8 hours, or even from 2 to 4 hours, or any and all subranges formed from any of these endpoints.

[0137] The colored glass articles formed from the glass compositions described herein may have any suitable thickness, which will vary depending on the particular application of the colored glass article. In embodiments, the colored glass article may have a thickness of 250 μm or more and 6 mm or less, 250 μm or more and 4 mm or less, 250 μm or more and 2 mm or less, 250 μm or more and 1 mm or less, 250 μm or more and 750 μm or more and 250 μm or more and 500 μm or more, 500 μm or more and 6 mm or less, 500 μm or more and 4 mm or less, 500 μm or more and 2 mm or less, 500 μm or more and 1 mm or less, 500 μm or more and 750 μm or more, and may have a thickness of greater than or equal to 750 μm and less than or equal to 6 mm, greater than or equal to 750 μm and less than or equal to 4 mm, greater than or equal to 750 μm and less than or equal to 2 mm, greater than or equal to 750 μm and less than or equal to 1 mm, greater than or equal to 1 mm and less than or equal to 6 mm, greater than or equal to 1 mm and less than or equal to 4 mm, greater than or equal to 1 mm and less than or equal to 2 mm, greater than or equal to 2 mm and less than or equal to 6 mm, greater than or equal to 2 mm and less than or equal to 4 mm, and even greater than or equal to 4 mm and less than or equal to 6 mm, or any and all sub-ranges formed from any of these endpoints.

[0138] As previously noted, colored glass articles formed from the glass compositions described herein may have increased fracture toughness such that the colored glass article is more resistant to damage. In embodiments, the colored glass article has a fracture toughness of 0.7 MPa m as measured by the CNSB method. 1 / 2 The fracture toughness K before ion exchange IC In an embodiment, the colored glass article has a modulus of elasticity of 0.7 MPa m as measured by the CNSB method. 1 / 2 More than 0.8MPa m 1 / 2 Above 0.9MPa m 1 / 2 or more, or even 1.0 MPa m 1 / 2 The fracture toughness K before ion exchange IC It may have.

[0139] In embodiments, the glass compositions described herein are ion-exchangeable to promote strengthening of colored glass articles produced from the glass compositions. In a typical ion-exchange process, smaller metal ions in the glass composition are replaced, or "exchanged," with larger metal ions of the same valence in a layer near the outer surface of a colored glass article produced from the glass composition. The replacement of smaller ions with larger ions creates compressive stresses in the layer of the colored glass article produced from the glass composition. In embodiments, the metal ions are monovalent metal ions (i.e., Li + , Na + , K + etc.), and the ion exchange is carried out by immersing a glass article made from the glass composition in a bath containing a molten salt of at least one of the larger metal ions that is to exchange for the smaller metal ions in the colored glass article. Alternatively, the monovalent ion may be Ag + , Tl + , Cu +The ion exchange process used to strengthen colored glass articles produced from the glass composition may include contacting the colored glass article with an ion exchange medium. In embodiments, the ion exchange medium may be a molten salt bath. For example, but not limited to, the ion exchange process may include immersion in one bath or in multiple baths of similar or different composition with optional washing and / or annealing steps between immersions.

[0140] Ion exchange solution (e.g., KNO 3 and / or NaNO 3 The molten salt bath, when exposed to the colored glass article, according to embodiments, may be at a temperature of 350° C. or more and 500° C. or less, 360° C. or more and 450° C. or less, 370° C. or more and 440° C. or less, 360° C. or more and 420° C. or more, 370° C. or more and 400° C. or less, 375° C. or more and 475° C. or more, 400° C. or more and 500° C. or less, 410° C. or more and 490° C. or more, 420° C. or more and 480° C. or more, 430° C. or more and 470° C. or less, or even 440° C. or more and 460° C. or less, or any and all sub-ranges therebetween. In embodiments, the colored glass article may be exposed to the ion exchange solution for a period of at least 2 hours and not more than 24 hours, at least 2 hours and not more than 12 hours, at least 2 hours and not more than 6 hours, at least 8 hours and not more than 24 hours, at least 6 hours and not more than 24 hours, at least 6 hours and not more than 12 hours, at least 8 hours and not more than 24 hours, and even at least 8 hours and not more than 12 hours, or any and all subranges formed from any of these endpoints.

[0141] In embodiments, colored glass articles produced from the glass compositions may be ion exchanged to achieve a compression depth of 10 μm or more, 20 μm or more, 30 μm or more, 40 μm or more, 50 μm or more, 60 μm or more, 70 μm or more, 80 μm or more, 90 μm or more, or 100 μm or more. In embodiments, colored glass articles produced from the glass compositions may have a thickness "t" and may be ion exchanged to achieve a compression depth of 0.15t or more, 0.17t or more, or even 0.2t or more. In embodiments, colored glass articles produced from the glass compositions may have a thickness "t" and may be ion exchanged to achieve a compression depth of 0.3t or less, 0.27t or less, or even 0.25t or less. In embodiments, colored glass articles produced from the glass compositions described herein may have a thickness "t" and may be ion exchanged to achieve a compression depth of greater than or equal to 0.15t and less than or equal to 0.3t, greater than or equal to 0.15t and less than or equal to 0.27t, greater than or equal to 0.15t and less than or equal to 0.25t, greater than or equal to 0.17t and less than or equal to 0.3t, greater than or equal to 0.17t and less than or equal to 0.27t, greater than or equal to 0.17t and less than or equal to 0.25t, greater than or equal to 0.2t and less than or equal to 0.3t, greater than or equal to 0.2t and less than or equal to 0.27t, or even greater than or equal to 0.2t and less than or equal to 0.25t, or any and all subranges formed from any of these endpoints.

[0142] The occurrence of this surface compression layer is beneficial for achieving better crack resistance and higher bending strength compared to non-ion-exchanged materials. This surface compression layer provides a higher concentration of exchanged ions in the colored glass article compared to the concentration of exchanged ions in the colored glass article for the body of the colored glass article (i.e., areas not including surface compression). In embodiments, colored glass articles produced from the glass composition may have a surface compressive stress after ion exchange strengthening of 300 MPa or more, 400 MPa or more, 500 MPa or more, or even 600 MPa or more. In embodiments, colored glass articles produced from the glass composition may have a surface compressive stress after ion exchange strengthening of 1 GPa or less, 900 MPa or less, or even 800 MPa or less. In embodiments, colored glass articles produced from the glass composition may have a surface compressive stress after ion exchange strengthening of 300 MPa or more and 1 GPa or less, 300 MPa or more and 900 MPa or less, 300 MPa or more and 800 MPa or less, 400 MPa or more and 1 GPa or less, 400 MPa or more and 900 MPa or less, 400 MPa or more and 800 MPa or less, 500 MPa or more and 1 GPa or less, 500 MPa or more and 900 MPa or less, 500 MPa or more and 800 MPa or less, 600 MPa or more and 1 GPa or less, 600 MPa or more and 900 MPa or less, 600 MPa or more and 800 MPa or less.

[0143] In embodiments, colored glass articles produced from the glass compositions may have a maximum central tension after ion exchange strengthening of 40 MPa or more, 60 MPa or more, 80 MPa or more, or even 100 MPa or more. In embodiments, colored glass articles produced from the glass compositions may have a maximum central tension after ion exchange strengthening of 250 MPa or less, 200 MPa or less, or even 150 MPa or less. In embodiments, colored glass articles produced from the glass compositions may have a maximum central tension after ion exchange strengthening of 40 MPa or more and 250 MPa or less, 40 MPa or more and 200 MPa or less, 40 MPa or more and 150 MPa or more, 60 MPa or more and 250 MPa or less, 60 MPa or more and 200 MPa or less, 60 MPa or more and 150 MPa or more, 80 MPa or more and 250 MPa or less, 80 MPa or more and 200 MPa or less, 80 MPa or more and 150 MPa or more, 100 MPa or more and 250 MPa or less, 100 MPa or more and 200 MPa or less, or even 100 MPa or more and 150 MPa or less, or any and all subranges formed from any of these endpoints. As used herein, central tension refers to the maximum central tension value unless otherwise specified.

[0144] The tinted glass articles described herein may be used in a wide variety of applications, including, for example, back cover applications in consumer or consumer electronic devices such as smartphones, tablet computers, personal computers, ultrabooks, televisions, and cameras. Exemplary articles incorporating any of the tinted glass articles disclosed herein are shown in Figures 1 and 2. Specifically, Figures 1 and 2 show a consumer electronic device 100 with a housing 102 having a front surface 104, a back surface 106, and sides 108; electrical components at least partially within or entirely within the housing, including at least a controller, memory, and a display 110 at or adjacent the front surface of the housing; and a cover substrate 112 at or over the front surface of the housing to cover the display. In an embodiment, at least a portion of the housing 102, such as the back surface 106, may include any of the tinted glass articles disclosed herein. EXAMPLES

[0145] In order to more readily understand the various embodiments, reference is made to the following examples, which illustrate various embodiments of the colored glass articles described herein.

[0146] Table 1 shows exemplary compositions C1-C26, including the analytical concentrations (expressed in mole %) of the resulting colored glass articles.

[0147] [Table 1-1]

[0148] [Table 1-2]

[0149] [Table 1-3]

[0150] [Table 1-4]

[0151] [Table 1-5]

[0152] Referring now to Table 2, exemplary glass articles A1-A52 were formed from exemplary compositions C2-C9 and C15-C23 shown in Table 1 and subjected to heat treatment at the indicated temperatures for the time periods shown in Table 2. The transmittance color coordinates in CIELAB color space and the observable colors of the resulting colored glass articles, measured under an F2 illuminant and a standard observation angle of 10° at an article thickness of 1.33 mm, are shown in Table 2.

[0153] [Table 2-1]

[0154] [Table 2-2]

[0155] [Table 2-3]

[0156] [Table 2-4]

[0157] [Table 2-5]

[0158] [Table 2-6]

[0159] [Table 2-7]

[0160] [Table 2-8]

[0161] [Table 2-9]

[0162] Referring now to Table 3, exemplary glass articles A53-A114 were formed from exemplary compositions C1-C14 and C24-C26 shown in Table 1 and subjected to heat treatment at the indicated temperatures for the periods of time shown in Table 3. The observable colors of the resulting colored glass articles are shown in Table 3.

[0163] [Table 3-1]

[0164] [Table 3-2]

[0165] [Table 3-3]

[0166] [Table 3-4]

[0167] [Table 3-5]

[0168] [Table 3-6]

[0169] [Table 3-7]

[0170] [Table 3-8]

[0171] [Table 3-9]

[0172] [Table 3-10]

[0173] [Table 3-11]

[0174] Now referring to FIGS. 3 and 4, the R of the exemplary glass articles A29 to A44 2 O-Al 2 O 3 and, respectively, a * and b * The relationship between a and b is plotted in Fig. 3. * is R 2 O-Al 2 O 3 Regardless of the value of R, it was positive, which resulted in observable colors toward the red end of the CIELAB color space. As shown in Figure 4, 2 O-Al 2 O 3 As increases, b * % and 0.04 mol %, respectively, whereby the observable color shifted from blue to yellow. 2 O-Al 2 O 3Exemplary glass articles A35 and A36 formed from exemplary compositions C8 and C9 having b values ​​of -9.39 and -8.92, respectively. * The glass article was obtained with an observable purple color, having an analysis R of 2.98 mol % and 2.02 mol %, respectively. 2 O-Al 2 O 3 Exemplary glass articles A29 and A30 formed from exemplary compositions C2 and C3 have b values ​​of 9.97 and 10.51, respectively. * and an observable orange glass article and an observable red glass article were obtained.

[0175] Furthermore, Fe 2 O 3 and ZrO 2 Exemplary glass articles A33 and A34 formed from exemplary glass compositions C6 and C7, including

[0176] As shown in Tables 2 and 3 and Figures 3 and 4, the analytical R 2 O-Al 2 O 3 may be adjusted, additional ingredients may be added to the glass composition, and the glass article may be subjected to specific heat treatments to provide the desired colored glass article.

[0177] It will be apparent to those skilled in the art that various modifications and variations can be made to the embodiments described herein without departing from the spirit and scope of the claimed subject matter. Therefore, it is intended that this specification cover modifications and variations of the various embodiments described herein, provided such modifications and variations come within the scope of the appended claims and their equivalents.

[0178] Preferred embodiments of the present invention will be described below in detail.

[0179] EMBODIMENT 1 1. A tinted glass article comprising: SiO 2 of 50 mol % or more and 80 mol % or less2 , 7 mol% or more and 25 mol% or less of Al 2 O 3 , 1 mol% or more and 15 mol% or less of B 2 O 3 , 7 mol% or more and 20 mol% or less of Li 2 O. 0.5 mol% or more and 12 mol% or less of Na 2 O. K greater than 0 mol% and less than or equal to 1 mol% 2 O, and 1×10 -6 % or more and 1 mol % or less of Au; Including, R 2 O-Al 2 O 3 is -5 mol % or more and 5 mol % or less, R 2 O is Li 2 O, Na 2 O, and K 2 A colored glass article, which is the sum of O.

[0180] EMBODIMENT 2 The colored glass article has a color reproducibility measured under an F2 illuminant and a standard observation angle of 10° with an article thickness of 1.33 mm. L between 50 and 100 * , -a between 15 and 25 * , and -25 or more and 25 or less b * , 2. The colored glass article of embodiment 1, having a transmittance color coordinate in the CIELAB color space of:

[0181] EMBODIMENT 3 R 2 O-Al 2 O 3 is -5 mol% or more and 1.5 mol% or less, b * 3. The colored glass article of claim 2, wherein the refractive index is greater than or equal to -25 and less than or equal to 10.

[0182] EMBODIMENT 4 R 2 O-Al 2 O 3 is -3 mol% or more and 1.5 mol% or less, b * 4. The colored glass article of claim 3, wherein the refractive index is greater than or equal to -15 and less than or equal to 7.

[0183] EMBODIMENT 5 R 2 O-Al 2 O 3 is more than 1.5 mol% and not more than 5 mol%, and b * 3. The colored glass article of embodiment 2, wherein

[0184] EMBODIMENT 6 R 2 O-Al 2 O 3 is more than 1.5 mol% and not more than 5 mol%, and b * 6. The colored glass article of embodiment 5, wherein:

[0185] EMBODIMENT 7 R 2 O-Al 2 O 3 7. The colored glass article of any one of the preceding claims, wherein is greater than or equal to -3 mol % and less than or equal to 5 mol %.

[0186] EMBODIMENT 8 R 2 O-Al 2 O 3 8. The colored glass article of embodiment 7, wherein the is greater than or equal to -1 mol % and less than or equal to 3 mol %.

[0187] EMBODIMENT 9 9. The colored glass article of any one of the preceding claims, wherein the colored glass article comprises greater than or equal to 0.0001 mol % and less than or equal to 0.1 mol % Au.

[0188] EMBODIMENT 10 R 2 10. The colored glass article of any one of the preceding claims, wherein O is equal to or greater than 6 mol% and equal to or less than 25 mol%.

[0189] EMBODIMENT 11 R 2 11. The colored glass article of embodiment 10, wherein O is equal to or greater than 8 mol % and equal to or less than 23 mol %.

[0190] EMBODIMENT 12 The colored glass article contains 0.01 mol % or more and 2 mol % or less of ZrO 2 12. The colored glass article of any one of the preceding claims, comprising:

[0191] EMBODIMENT 13 The colored glass article comprises 0.1 mol % or more and 1.5 mol % or less of ZrO 2 13. The colored glass article of claim 12, comprising:

[0192] EMBODIMENT 14 The colored glass article contains 0.01 mol % or more and 1 mol % or less of Fe 2 O 3 14. The colored glass article of any one of the preceding claims, comprising:

[0193] EMBODIMENT 15 The colored glass article comprises 0.05 mol % or more and 0.5 mol % or less of Fe 2 O 3 15. The colored glass article of claim 14, comprising:

[0194] EMBODIMENT 16 5.72 * Al 2 O 3 (mol%)-21.4 * ZnO (mol%)-2.5 * P 2 O 5 (mol%)-35 * Li 2 O (mol%) - 16.6 * B 2 O 3 (mol%)-20.5 * MgO (mol%) - 23.3 * Na 2 O (mol%) - 27.9* SrO (mol%)-18.5 * K 2 O (mol%) - 26.3 * 16. The colored glass article of any one of the preceding claims, wherein CaO (mol %) is greater than -609 mol %.

[0195] EMBODIMENT 17 The colored glass article contains 0.01 mol % or more and 1 mol % or less of SnO 2 17. The colored glass article of any one of the preceding claims, comprising:

[0196] EMBODIMENT 18 The colored glass article contains 0.05 mol % or more and 0.75 mol % or less of SnO 2 18. The colored glass article of claim 17, comprising:

[0197] EMBODIMENT 19 19. The colored glass article of any one of the preceding claims, wherein the colored glass article is substantially free of MgO, CaO, ZnO, Cl, or combinations thereof.

[0198] EMBODIMENT 20 The colored glass article has 7 mol % or more and 18 mol % or less of Li 2 20. The colored glass article of any one of the preceding claims, comprising O.

[0199] EMBODIMENT 21 The colored glass article comprises 9 mol % or more and 16 mol % or less of Li 2 21. The colored glass article of embodiment 20, comprising O.

[0200] EMBODIMENT 22 The colored glass article contains 1 mol % or more and 12 mol % or less of Na 2 22. The colored glass article of any one of the preceding claims, comprising O.

[0201] EMBODIMENT 23 The colored glass article contains 2 mol % or more and 10 mol % or less of Na 223. The colored glass article of embodiment 22, comprising O.

[0202] EMBODIMENT 24 The colored glass article has 0.1 mol % or more and 0.5 mol % or less of K 2 24. The colored glass article of any one of the preceding claims, comprising O.

[0203] EMBODIMENT 25 The colored glass article comprises 9 mol % or more and 23 mol % or less of Al 2 O 3 25. The colored glass article of any one of the preceding claims, comprising:

[0204] EMBODIMENT 26 The colored glass article comprises 11 mol % or more and 20 mol % or less of Al 2 O 3 26. The colored glass article of claim 25, comprising:

[0205] EMBODIMENT 27 The colored glass article has 2 mol % or more and 12 mol % or less of B 2 O 3 27. The colored glass article of any one of the preceding claims, comprising:

[0206] EMBODIMENT 28 The colored glass article has 3 mol % or more and 10 mol % or less of B 2 O 3 28. The colored glass article of claim 27, comprising:

[0207] EMBODIMENT 29 The colored glass article is 52 mol % or more and 75 mol % or less of SiO 2 29. The colored glass article of any one of the preceding claims, comprising:

[0208] EMBODIMENT 30 30. The colored glass article of any one of the preceding claims, wherein the colored glass article has a thickness of 250 μm or more and 6 mm or less.

[0209] EMBODIMENT 31 31. The colored glass article of any one of the preceding claims, wherein the colored glass article is an ion-exchanged colored glass article.

[0210] EMBODIMENT 32 32. The colored glass article of claim 31, wherein the ion-exchanged colored glass article has a compression depth of 10 μm or greater.

[0211] EMBODIMENT 33 33. The colored glass article of claim 31 or 32, wherein the ion exchanged colored glass article has a thickness "t" and a compression depth of 0.15t or greater.

[0212] EMBODIMENT 34 34. The colored glass article of any one of claims 31 to 33, wherein the ion-exchanged colored glass article has a surface compressive stress of 300 MPa or greater.

[0213] EMBODIMENT 35 35. The colored glass article of any one of claims 31 to 34, wherein the ion exchanged colored glass article has a maximum central tension of 40 MPa or greater.

[0214] EMBODIMENT 36 In consumer electronics, a housing having a front, a back, and sides; and electronic components disposed at least partially within said housing, said electronic components including at least a controller, a memory, and a display disposed on or adjacent a front surface of said housing; Equipped with A consumer electronic device, wherein the housing comprises a tinted glass article according to any one of claims 1 to 35.

[0215] EMBODIMENT 37 1. A glass composition comprising: SiO 2 of 50 mol % or more and 80 mol % or less 2 , 7 mol% or more and 25 mol% or less of Al2 O 3 , 1 mol% or more and 15 mol% or less of B 2 O 3 , 7 mol% or more and 20 mol% or less of Li 2 O. 0.5 mol% or more and 12 mol% or less of Na 2 O. K greater than 0 mol% and less than or equal to 1 mol% 2 O, and 1×10 -6 % or more and 1 mol % or less of Au; Including, R 2 O-Al 2 O 3 is -5 mol % or more and 5 mol % or less, R 2 O is Li 2 O, Na 2 O, and K 2 O is the sum of the glass composition.

[0216] EMBODIMENT 38 R 2 O-Al 2 O 3 38. The glass composition of embodiment 37, wherein is greater than or equal to -3 mol % and less than or equal to 5 mol %.

[0217] EMBODIMENT 39 R 2 O-Al 2 O 3 39. The glass composition of embodiment 38, wherein is greater than or equal to -1 mol % and less than or equal to 3 mol %.

[0218] EMBODIMENT 40 40. The glass composition of any one of claims 37 to 39, wherein the glass composition comprises 0.0001 mol % or more and 0.1 mol % or less of Au.

[0219] EMBODIMENT 41 R 2 41. The glass composition according to any one of embodiments 37 to 40, wherein O is equal to or greater than 6 mol % and equal to or less than 25 mol %.

[0220] EMBODIMENT 42 R 2 42. The glass composition of embodiment 41, wherein O is 8 mol % or more and 23 mol % or less.

[0221] EMBODIMENT 43 The glass composition contains 0.01 mol % or more and 2 mol % or less of ZrO 2 43. The glass composition of any one of claims 37 to 42, comprising:

[0222] EMBODIMENT 44 The glass composition contains 0.1 mol % or more and 1.5 mol % or less of ZrO 2 44. The glass composition of embodiment 43, comprising:

[0223] EMBODIMENT 45 The glass composition contains 0.01 mol % or more and 1 mol % or less of Fe 2 O 3 45. The glass composition of any one of claims 37 to 44, comprising:

[0224] EMBODIMENT 46 The glass composition contains 0.05 mol % or more and 0.5 mol % or less of Fe 2 O 3 46. ​​The glass composition of embodiment 45, comprising:

[0225] EMBODIMENT 47 5.72 * Al 2 O 3 (mol%)-21.4 * ZnO (mol%)-2.5 * P 2 O 5 (mol%)-35 * Li 2 O (mol%) - 16.6 * B 2 O 3 (mol%)-20.5 * MgO (mol%) - 23.3 * Na 2 O (mol%) - 27.9 * SrO (mol%)-18.5* K 2 O (mol%) - 26.3 * 47. The glass composition according to any one of embodiments 37 to 46, wherein CaO (mol%) is greater than -609 mol%.

[0226] EMBODIMENT 48 The glass composition contains 0.01 mol % or more and 1 mol % or less of SnO 2 48. The glass composition of any one of claims 37 to 47, comprising:

[0227] EMBODIMENT 49 The glass composition contains 0.05 mol % or more and 0.75 mol % or less of SnO 2 49. The glass composition of embodiment 48, comprising:

[0228] EMBODIMENT 50 50. The glass composition of any one of claims 37 to 49, wherein the glass composition is substantially free of MgO, CaO, ZnO, Cl, or combinations thereof.

[0229] EMBODIMENT 51 The glass composition contains 7 mol % or more and 18 mol % or less of Li 2 51. The glass composition of any one of embodiments 37 to 50, comprising O.

[0230] EMBODIMENT 52 The glass composition contains 9 mol % or more and 16 mol % or less of Li 2 52. The glass composition of embodiment 51, comprising O.

[0231] EMBODIMENT 53 The glass composition contains 1 mol % or more and 12 mol % or less of Na 2 53. The glass composition of any one of embodiments 37 to 52, comprising O.

[0232] EMBODIMENT 54 The glass composition contains 2 mol % or more and 10 mol % or less of Na 2 54. The glass composition of embodiment 53, comprising O.

[0233] EMBODIMENT 55 The glass composition contains 0.1 mol % or more and 0.5 mol % or less of K. 2 55. The glass composition of any one of embodiments 37 to 54, comprising O.

[0234] EMBODIMENT 56 The glass composition contains 9 mol % or more and 23 mol % or less of Al 2 O 3 56. The glass composition of any one of claims 37 to 55, comprising:

[0235] EMBODIMENT 57 The glass composition contains 11 mol % or more and 20 mol % or less of Al 2 O 3 57. The glass composition of embodiment 56, comprising:

[0236] EMBODIMENT 58 The glass composition contains 2 mol % or more and 12 mol % or less of B. 2 O 3 58. The glass composition of any one of claims 37 to 57, comprising:

[0237] EMBODIMENT 59 The glass composition contains 3 mol % or more and 10 mol % or less of B 2 O 3 59. The glass composition of embodiment 58, comprising:

[0238] EMBODIMENT 60 The glass composition is 52 mol % or more and 75 mol % or less of SiO 2 60. The glass composition of any one of claims 37 to 59, comprising:

[0239] EMBODIMENT 61 1. A method of forming a colored glass article, comprising: 1. A process for heat treating a glass composition to form a glass article, the glass composition comprising: SiO 2 of 50 mol % or more and 80 mol % or less 2 , 7 mol% or more and 25 mol% or less of Al 2 O 3 , 1 mol% or more and 15 mol% or less of B 2 O 3 , 7 mol% or more and 20 mol% or less of Li 2 O. 0.5 mol% or more and 12 mol% or less of Na 2 O. K greater than 0 mol% and less than or equal to 1 mol% 2 O, and 1×10 -6 % or more and 1 mol % or less of Au; Including, R 2 O-Al 2 O 3 is -5 mol % or more and 5 mol % or less, R 2 O is Li 2 O, Na 2 O, and K 2 O is the sum of steps, and subjecting the glass article to a heat treatment cycle at a temperature of at least 500°C and at most 800°C for a period of at least 0.25 hours and at most 24 hours to produce a colored glass article; The method includes:

[0240] EMBODIMENT 62 62. The method of embodiment 61, wherein the temperature of the heat treatment cycle is equal to or greater than 550°C and equal to or less than 775°C.

[0241] EMBODIMENT 63 63. The method according to embodiment 61 or 62, wherein the duration of the heat treatment cycle is equal to or greater than 0.5 hours and equal to or less than 16 hours.

[0242] EMBODIMENT 64 64. The method of any one of claims 61 to 63, further comprising strengthening the colored glass article in an ion exchange bath at a temperature of 350°C or more and 500°C or less for a period of 2 hours or more and 12 hours or less to form an ion-exchanged glass-ceramic article.

[0243] EMBODIMENT 65 The ion exchange bath is KNO 3 65. The method of embodiment 64, comprising:

[0244] EMBODIMENT 66 The ion exchange bath is NaNO 3 66. The method of embodiment 65, comprising: [Explanation of symbols]

[0245] 100 Consumer Electronics 102 Case 104 Front 106 Back 108 Side 110 Display 112 Cover board

Claims

1. A colored glass article, containing 50 mol% or more and 80 mol% or less of SiO ２ , 7 mol% or more and 25 mol% or less of Al ２ O ３ , 1 mol% or more and 15 mol% or less of B ２ O ３ , 7 mol% or more and 20 mol% or less of Li ２ O, 0.5 mol% or more and 12 mol% or less of Na ２ O, more than 0 mol% and 1 mol% or less of K ２ O, and 1×10 －６ mol% or more and 1 mol% or less of Au, and R ２ O - Al ２ O ３ is -5 mol% or more and 5 mol% or less, and R ２ O is the total of Li ２ O, Na ２ O, and K ２ O, a colored glass article.

2. The colored glass article, when measured at an article thickness of 1.33 mm under an F2 light source and a standard viewing angle of 10°, has a transmittance color coordinate in the CIELAB color space of 50 or more and 100 or less of L ＊ , -15 or more and 25 or less of a ＊ , and -25 or more and 25 or less of b ＊ , , the colored glass article according to Claim 1.

3. The colored glass article according to Claim 1 or 2, wherein the colored glass article contains 0.0001 mol% or more and 0.1 mol% or less of Au.

4. The colored glass article according to any one of Claims 1 to 3, wherein the colored glass article contains 0.01 mol% or more and 2 mol% or less of ZrO ２ The colored glass article according to claim 1, comprising

5. The colored glass article has Fe of 0.01 mol% or more and 1 mol% or less ２ O ３ The colored glass article according to claim 1, comprising

6. The colored glass article is an ion-exchanged colored glass article, and the ion-exchanged colored glass article has a thickness "t", a compressive depth of 0.15t or more, a surface compressive stress of 300 MPa or more, and a maximum central tensile stress of 40 MPa or more. The colored glass article according to claim 1.

7. A glass composition, comprising 50 mol% or more and 80 mol% or less of SiO ２ , 7 mol% or more and 25 mol% or less of Al ２ O ３ , 1 mol% or more and 15 mol% or less of B ２ O ３ , 7 mol% or more and 20 mol% or less of Li ２ O, 0.5 mol% or more and 12 mol% or less of Na ２ O, More than 0 mol% and 1 mol% or less of K ２ O, and 1×10 －６ mol% or more and 1 mol% or less of Au, comprising R ２ O - Al ２ O ３ is -5 mol% or more and 5 mol% or less, and RO is the total of Li ２ O, Na ２ O, and K ２ O. A glass composition. ２

8.

9. The glass composition according to claim 7, comprising 0.01 mol% or more and 2 mol% or less of ZrO ２ The glass composition according to claim 7, comprising

9. The glass composition contains 0.01 mol% or more and 1 mol% or less of Fe ２ O ３ The glass composition according to claim 7 or 8.

10. In a method for forming a colored glass article, A step of heat-treating a glass composition to form a glass article, wherein the glass composition is 50 mol% or more and 80 mol% or less of SiO ２ , 7 mol% or more and 25 mol% or less of Al ２ O ３ , 1 mol% or more and 15 mol% or less of B ２ O ３ , 7 mol% or more and 20 mol% or less of Li ２ O, 0.5 mol% or more and 12 mol% or less of Na ２ O, More than 0 mol and 1 mol% or less of K ２ O, and 1×10 －６ mol% or more and 1 mol% or less of Au, containing R ２ O - Al ２ O ３ is -5 mol% or more and 5 mol% or less, and R ２ O is the total of Li ２ O, Na ２ O, and K ２ O, and A step of subjecting the glass article to a heat treatment cycle at a temperature of 500°C or more and 800°C or less and for a period of 0.25 hours or more and 24 hours or less to produce a colored glass article, A method comprising

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