Colored glass articles having improved mechanical durability

Patent metadata

Field	Value
Publication number	US-11891332-B2
Application number	US-202318093521-A
Country	US
Kind code	B2
Filing date	Jan 5, 2023
Priority date	Oct 4, 2021
Publication date	Feb 6, 2024
Grant date	Feb 6, 2024

Abstract

A colored glass article includes greater than or equal to 50 mol % and less than or equal to 80 mol % SiO 2 ; greater than or equal to 7 mol % and less than or equal to 25 mol % Al 2 O 3 ; greater than or equal to 1 mol % and less than or equal to 15 mol % B 2 O 3 ; greater than or equal to 5 mol % and less than or equal to 20 mol % Li 2 O; greater than or equal to 0.5 mol % and less than or equal to 15 mol % Na 2 O; greater than 0 mol % and less than or equal to 1 mol % K 2 O; and greater than or equal to 1×10 −6 mol % and less than or equal to 1 mol % Au. R 2 O—Al 2 O 3 is greater than or equal to −5 mol % and less than or equal to 7 mol %, R 2 O being the sum of Li 2 O, Na 2 O, and K 2 O.

First claim

What is claimed is:

1. A glass composition comprising:
greater than or equal to 50 mol % and less than or equal to 80 mol % SiO 2 ;
greater than or equal to 7 mol % and less than or equal to 25 mol % Al 2 O 3 ;
greater than or equal to 1 mol % and less than or equal to 15 mol % B 2 O 3 ;
greater than or equal to 7 mol % and less than or equal to 20 mol % Li 2 O;
greater than or equal to 0.5 mol % and less than or equal to 12 mol % Na 2 O;
greater than 0 mol % and less than or equal to 1 mol % K 2 O; and
greater than or equal to 1×10 −6 mol % and less than or equal to 0.0016 mol % Au,
wherein [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*CaO (mol %)] is greater than −609 mol %.

2. The glass composition of claim 1 , wherein the glass composition comprises greater than or equal to 0.0001 mol % and less than or equal to 0.001 mol % Au.

3. The glass composition of claim 1 , wherein R 2 O is a sum of Li 2 O, Na 2 O, and K 2 O of the glass composition, and wherein the R 2 O is greater than or equal to 6 mol % and less than or equal to 25 mol %.

4. The glass composition of claim 1 , wherein [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*CaO (mol %)] is less than −400 mol %.

5. The glass composition of claim 4 , wherein [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*CaO (mol %)] is less than −450 mol %.

6. A colored glass article comprising the glass composition of claim 1 , wherein the colored glass article has a transmittance color coordinate in the CIELAB color space, as measured at an article thickness of 1.33 mm under F2 illumination and a 10° standard observer angle, of L* greater than or equal to 50 and less than or equal to 100, a* greater than or equal to −15 and less than or equal to 25, and b* greater than or equal to −25 and less than or equal to 25.

7. The colored glass article of claim 6 , wherein the colored glass article has a thickness greater than or equal to 250 μm and less than or equal to 6 mm, wherein the colored glass article is an ion-exchanged colored glass article, wherein the ion-exchanged colored glass article has a depth of compression 10 μm or greater, wherein the ion-exchanged colored glass article has a surface compressive stress greater than or equal to 300 MPa, and wherein the ion-exchanged colored glass article has a maximum central tension greater than or equal to 40 MPa.

8. A consumer electronic device, comprising:
a housing having a front surface, a back surface, and side surfaces; and
electrical components provided at least partially within the housing, the electrical components including at least a controller, a memory, and a display, the display being provided at or adjacent the front surface of the housing;
wherein the housing comprises the colored glass article of claim 7 .

9. A glass composition comprising:
greater than or equal to 50 mol % and less than or equal to 80 mol % SiO 2 ;
greater than or equal to 7 mol % and less than or equal to 25 mol % Al 2 O 3 ;
greater than or equal to 1 mol % and less than or equal to 15 mol % B 2 O 3 ;
greater than or equal to 7 mol % and less than or equal to 20 mol % Li 2 O;
greater than or equal to 0.5 mol % and less than or equal to 12 mol % Na 2 O;
greater than or equal to 0 mol % and less than or equal to 1 mol % K 2 O; and
greater than or equal to 1×10 −6 mol % and less than or equal to 0.0016 mol % Au,
wherein [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*CaO (mol %)] is greater than −609 mol %.

10. The glass composition of claim 9 , wherein the glass composition comprises greater than or equal to 0.0001 mol % and less than or equal to 0.001 mol % Au.

11. The glass composition of claim 9 , wherein R 2 O is a sum of Li 2 O, Na 2 O, and K 2 O of the glass composition, and wherein the R 2 O is greater than or equal to 6 mol % and less than or equal to 25 mol %.

12. A colored glass article comprising the glass composition of claim 9 , wherein the colored glass article has a transmittance color coordinate in the CIELAB color space, as measured at an article thickness of 1.33 mm under F2 illumination and a 10° standard observer angle, of L* greater than or equal to 50 and less than or equal to 100, a* greater than or equal to −15 and less than or equal to 25, and b* greater than or equal to −25 and less than or equal to 25.

13. The colored glass article of claim 12 , wherein the colored glass article has a thickness greater than or equal to 250 μm and less than or equal to 6 mm, wherein the colored glass article is an ion-exchanged colored glass article, wherein the ion-exchanged colored glass article has a depth of compression 10 μm or greater, wherein the ion-exchanged colored glass article has a surface compressive stress greater than or equal to 300 MPa, and wherein the ion-exchanged colored glass article has a maximum central tension greater than or equal to 40 MPa.

14. A consumer electronic device, comprising:
a housing having a front surface, a back surface, and side surfaces; and
electrical components provided at least partially within the housing, the electrical components including at least a controller, a memory, and a display, the display being provided at or adjacent the front surface of the housing;
wherein the housing comprises the colored glass article of claim 13 .

15. A glass composition comprising:
greater than or equal to 50 mol % and less than or equal to 80 mol % SiO 2 ;
greater than or equal to 7 mol % and less than or equal to 25 mol % Al 2 O 3 ;
greater than or equal to 1 mol % and less than or equal to 15 mol % B 2 O 3 ;
greater than or equal to 7 mol % and less than or equal to 20 mol % Li 2 O;
greater than or equal to 0.5 mol % and less than or equal to 12 mol % Na 2 O;
greater than or equal to 0 mol % and less than or equal to 1 mol % K 2 O; and
greater than or equal to 1×10 −6 mol % and less than or equal to 0.0016 mol % Au,
wherein [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*CaO (mol %)] is less than −400 mol %.

16. The glass composition of claim 15 , wherein the glass composition comprises greater than or equal to 0.0001 mol % and less than or equal to 0.001 mol % Au.

17. The glass composition of claim 15 , wherein R 2 O is a sum of Li 2 O, Na 2 O, and K 2 O of the glass composition, and wherein the R 2 O is greater than or equal to
6 mol % and less than or equal to 25 mol %.

18. A colored glass article comprising the glass composition of claim 15 , wherein the colored glass article has a transmittance color coordinate in the CIELAB color space, as measured at an article thickness of 1.33 mm under F2 illumination and a 10° standard observer angle, of L* greater than or equal to 50 and less than or equal to 100, a* greater than or equal to −15 and less than or equal to 25, and b* greater than or equal to −25 and less than or equal to 25.

19. The colored glass article of claim 18 , wherein the colored glass article has a thickness greater

Assignees

• Corning Inc

Inventors

• Guo Xiaoju
• Hall Jill Marie
• Koch Iii Karl William
• Kohl Jesse
• Luo Jian
• Smith Liping Xiong
• Wiles Nicole Taylor

Classifications

• C03C3/093 Primary

  containing zinc or zirconium · CPC title

• C03C4/02

  for coloured glass · CPC title

• C03C21/002

  to perform ion-exchange between alkali ions (C03C21/005 takes precedence) · CPC title

• C03C3/091

  containing aluminium · CPC title

• C03C3/11

  containing halogen or nitrogen · CPC title