Colored glasses with improved tempering capabilities

Patent metadata

Field	Value
Publication number	US-11845692-B2
Application number	US-202217955626-A
Country	US
Kind code	B2
Filing date	Sep 29, 2022
Priority date	Nov 30, 2017
Publication date	Dec 19, 2023
Grant date	Dec 19, 2023

Abstract

The disclosure relates to highly temperable colored glass compositions. The colored glass compositions have high coefficients of thermal expansion and high Young's moduli that advantageously absorb in the ultraviolet and/or blue wavelength ranges. Methods of making such glasses are also provided.

First claim

What is claimed is:

1. A glass, comprising:
55-75 mol % SiO 2 ;
5-10 mol % Al 2 O 3 ;
greater than 5 to 10 mol % MgO;
5-15 mol % CaO;
8-15 mol % alkali metal oxides, wherein the alkali metal oxides comprise at least one of Li 2 O, Na 2 O, and K 2 O;
0-15 mol % Na 2 O;
0-15 mol % K 2 O;
>1-4 mol % TiO 2 ; and
>0-2 mol % CeO 2 , Ho 2 O 3 , CuO, NiO, or combinations thereof;
wherein the glass exhibits a color presented in SCE color space coordinates with the following values:
a*=from about −10 to about 30;
b*=from about 0 to about 30; and
L*>83.

2. The glass of claim 1 , wherein the glass composition has a low temperature coefficient of thermal expansion (LTCTE) measured from 25° C. to 300° C. and a high temperature coefficient of thermal expansion (HTCTE) measured at temperature above glass transition region, and wherein the sum of the LTCTE and the HTCTE is 350×10 −7 /° C. or greater.

3. The glass of claim 2 , wherein sum of the LTCTE and the HTCTE is 400×10 −7 /° C. or greater.

4. The glass of claim 1 , wherein the glass has temperability equal to or greater than 0.80.

5. The glass of claim 4 , wherein the temperability is equal to or greater than 0.90.

6. The glass of claim 1 , further comprising greater than 1.5 to 6 mol % B 2 O 3 .

7. A housing of a consumer electronic product comprising the glass of claim 1 .

8. A glass, comprising:
55-75 mol % SiO 2 ;
5-10 mol % Al 2 O 3 ;
greater than 5 to 10 mol % MgO;
5-15 mol % CaO;
8-15 mol % alkali metal oxides, wherein the alkali metal oxides comprise at least one of Li 2 O, Na 2 O, and K 2 O;
0-15 mol % Na 2 O;
0-15 mol % K 2 O;
>1-4 mol % TiO 2 ; and
>0 to 4 mol % Fe 2 O 3 , V 2 O 5 , Cr 2 O 3 , MnO 2 , CeO 2 , NiO, ZnO, CuO, Co 3 O 4 , rare earth oxides, and combinations thereof;
wherein the glass exhibits a color presented in SCE color space coordinates with the following values:
a*=from about −10 to about 30;
b*=from about 0 to about 30; and
L*>83.

9. The glass of claim 8 , wherein the glass composition has a low temperature coefficient of thermal expansion (LTCTE) measured from 25° C. to 300° C. and a high temperature coefficient of thermal expansion (HTCTE) measured at temperature above glass transition region, and wherein the sum of the LTCTE and the HTCTE is 350×10 −7 /° C. or greater.

10. The glass of claim 9 , wherein sum of the LTCTE and the HTCTE is 400×10 −7 /° C. or greater.

11. The glass of claim 8 , wherein the glass has temperability equal to or greater than 0.80.

12. The glass of claim 11 , wherein the temperability is equal to or greater than 0.90.

13. The glass of claim 8 , further comprising greater than 1.5 to 6 mol % B 2 O 3 .

14. A housing of a consumer electronic product comprising the glass of claim 8 .

15. A glass, comprising:
55-75 mol % SiO 2 ;
5-10 mol % Al 2 O 3 ;
greater than 5 to 10 mol % MgO;
5-15 mol % CaO;
8-15 mol % alkali metal oxides, wherein the alkali metal oxides comprise at least one of Li 2 O, Na 2 O, and K 2 O;
0-15 mol % Na 2 O;
0-15 mol % K 2 O;
>1-4 mol % TiO 2 ; and
>0 to 4 mol % Fe 2 O 3 , V 2 O 5 , Cr 2 O 3 , MnO 2 , CeO 2 , NiO, ZnO, CuO, Co 3 O 4 , rare earth oxides, and combinations thereof;
wherein the glass exhibits a color presented in SCE color space coordinates with the following value: L*>83.

16. The glass of claim 15 , wherein the glass composition has a low temperature coefficient of thermal expansion (LTCTE) measured from 25° C. to 300° C. and a high temperature coefficient of thermal expansion (HTCTE) measured at temperature above glass transition region, and wherein the sum of the LTCTE and the HTCTE is 350×10 −7 /° C. or greater.

17. The glass of claim 15 , wherein the glass has temperability equal to or greater than 0.80.

18. The glass of claim 17 , wherein the temperability is equal to or greater than 0.90.

19. The glass of claim 15 , further comprising greater than 1.5 to 6 mol % B 2 O 3 .

20. A housing of a consumer electronic product comprising the glass of claim 15 .

Assignees

• Corning Inc

Inventors

• Kiczenski Timothy James
• Lezzi Peter Joseph
• Pierson-Stull Michelle Diane
• Wu Jingshi

Classifications

• C03C4/02 Primary

  for coloured glass · CPC title

• C03C3/087

  containing calcium oxide, e.g. common sheet or container glass · CPC title

• C03C3/091 Primary

  containing aluminium · CPC title

• C03C3/095

  containing rare earths · CPC title

• C03C2201/3423

  Cerium · CPC title