Fusion formable and steam strengthenable glass compositions with platinum compatibility
Glass-based articles that include a compressive stress layer extending from a surface of the glass-based article to a depth of compression are formed by exposing glass-based substrates to water vapor containing environments. The glass-based substrates have compositions selected to be fusion formable, to be steam strengthen able, and to avoid the formation of platinum defects during the forming process. The methods of forming the glass-based articles may include elevated pressures and/or multiple exposures to water vapor containing environments.
1. A glass-based article, comprising:
a compressive stress layer extending from a surface of the glass-based article to a depth of compression,
a hydrogen-containing layer extending from the surface of the glass-based article to a depth of layer, and
a composition at the center of the glass-based article, comprising:
SiO 2 ,
Al 2 O 3 ,
K 2 O,
R 2 O/Al 2 O 3 in an amount that is less than or equal to 1.4, wherein R 2 O is the total amount of monovalent metal oxides,
greater than or equal to 3.5 mol % to less than or equal to 6.0 mol % P 2 O 5 , and
greater than or equal to 2.0 mol % to less than or equal to 5.0 mol % Li 2 O, wherein:
the compressive stress layer comprises a compressive stress greater than or equal to 25 MPa,
a hydrogen concentration of the hydrogen-containing layer decreases from a maximum hydrogen concentration to the depth of layer, and
the depth of layer is greater than 5 μm.
2. The glass-based article of claim 1 , wherein the glass-based article comprises less than 1 globular chain platinum defect per pound.
3. The glass-based article of claim 1 , wherein the glass-based article exhibits no substantial phase separation.
4. The glass-based article of claim 1 , wherein the composition at the center of the glass-based article has an average field strength of alkali modifiers that is less than or equal to 0.18.
5. The glass-based article of claim 1 , wherein the composition at the center of the glass-based article comprises:
greater than or equal to 55.0 mol % to less than or equal to 65.0 mol % SiO 2 ,
greater than or equal to 10.0 mol % to less than or equal to 15.0 mol % Al 2 O 3 ,
greater than or equal to 0 mol % to less than or equal to 10.0 mol % B 2 O 3 , and
greater than or equal to 6.0 mol % to less than or equal to 15.0 mol % K 2 O.
6. The glass-based article of claim 1 , wherein the composition at the center of the glass-based article comprises greater than or equal to 4.5 mol % to less than or equal to 5.5 mol % P 2 O 5 .
7. The glass-based article of claim 1 , wherein the composition further comprises 1.4<(R 2 O+P 2 O 5 )/Al 2 O 3 <1.9, wherein R 2 O is the total amount of monovalent metal oxides.
8. A consumer electronic product, comprising:
a housing comprising a front surface, a back surface and side surfaces;
electrical components at least partially within the housing, the electrical components comprising at least a controller, a memory, and a display, the display at or adjacent the front surface of the housing; and
a cover substrate disposed over the display,
wherein at least a portion of at least one of the housing or the cover substrate comprises the glass-based article of claim 1 .
9. A glass-based article, comprising:
a compressive stress layer extending from a surface of the glass-based article to a depth of compression,
a hydrogen-containing layer extending from the surface of the glass-based article to a depth of layer, and
a composition at the center of the glass-based article, comprising:
SiO 2 ,
Al 2 O 3 ,
K 2 O,
1.4<(R 2 O+P 2 O 5 )/Al 2 O 3 <1.9, wherein R 2 O is the total amount of monovalent metal oxides,
greater than or equal to 3.5 mol % to less than or equal to 6.0 mol % P 2 O 5 , and
greater than or equal to 2.0 mol % to less than or equal to 5.0 mol % Li 2 O, wherein:
the compressive stress layer comprises a compressive stress greater than or equal to 25 MPa,
a hydrogen concentration of the hydrogen-containing layer decreases from a maximum hydrogen concentration to the depth of layer, and
the depth of layer is greater than 5 μm.
10. The glass-based article of claim 9 , wherein the glass-based article comprises less than 1 globular chain platinum defect per pound.
11. The glass-based article of claim 9 , wherein the glass-based article exhibits no substantial phase separation.
12. The glass-based article of claim 9 , wherein the composition at the center of the glass-based article has an average field strength of alkali modifiers that is less than or equal to 0.18.
13. The glass-based article of claim 9 , wherein the composition at the center of the glass-based article comprises:
greater than or equal to 55.0 mol % to less than or equal to 65.0 mol % SiO 2 ,
greater than or equal to 10.0 mol % to less than or equal to 15.0 mol % Al 2 O 3 ,
greater than or equal to 0 mol % to less than or equal to 10.0 mol % B 2 O 3 , and
greater than or equal to 6.0 mol % to less than or equal to 15.0 mol % K 2 O.
14. The glass-based article of claim 9 , wherein the composition at the center of the glass-based article comprises greater than or equal to 4.5 mol % to less than or equal to 5.5 mol % P 2 O 5 .
15. A consumer electronic product, comprising:
a housing comprising a front surface, a back surface and side surfaces;
electrical components at least partially within the housing, the electrical components comprising at least a controller, a memory, and a display, the display at or adjacent the front surface of the housing; and
a cover substrate disposed over the display,
wherein at least a portion of at least one of the housing or the cover substrate comprises the glass-based article of claim 9 .
16. A glass-based article, comprising:
a compressive stress layer extending from a surface of the glass-based article to a depth of compression,
a hydrogen-containing layer extending from the surface of the glass-based article to a depth of layer, and
a composition at the center of the glass-based article, comprising:
SiO 2 ,
Al 2 O 3 ,
K 2 O,
1.4<(R 2 O+P 2 O 5 )/Al 2 O 3 <1.9, wherein R 2 O is the total amount of monovalent metal oxides, and
greater than or equal to 3.5 mol % to less than or equal to 6.0 mol % P 2 O 5 , wherein:
the compressive stress layer comprises a compressive stress greater than or equal to 25 MPa,
a hydrogen concentration of the hydrogen-containing layer decreases from a maximum hydrogen concentration to the depth of layer,
the depth of layer is greater than 5 μm, and
the glass-based article exhibits no substantial phase separation.
17. The glass-based article of claim 16 , wherein the glass-based article comprises less than 1 globular chain platinum defect per pound.
18. The glass-based article of claim 16 , wherein the composition at the center of the glass-based article has an average field strength of alkali modifiers that is less than or equal to 0.18.
19. The glass-based article of claim 16 , wherein the composition at the center of the glass-based article comprises:
greater than or equal to 55.0 mol % to less than or equal to 65.0 mol % SiO 2 ,
greater than or equal to 10.0 mol % to less than or equal to 15.0 mol % Al 2 O 3 ,
greater than or equal to 0 mol % to less than or equal to 10.0 mol % B 2 O 3 , and
greater than or equal to 6.0 mol % to less than or equal to 15.0 mol % K 2 O.
20. The glass-based article of claim 16 , wherein the composition at the center of the glass-based article comprises greater than or equal to 4.5 mol % to less than or equal to 5.5 mol % P 2 O 5 .
21. The glass-based article of claim 16 , wherein R 2 O/Al 2 O 3 is in an amount that is less than or equal to 1.4, wherein R 2 O is the total amount of monovalent metal oxides.
22. A consumer electronic product, comprising:
a housing comprising a front surface, a back surface and side surfaces;
electrical components at least partially within the housing, the electrical components comprising at least a controller, a memory, and a display, the display at or adjacent the front surface of the housing; and
a cover substrate disposed over the display,
wherein at least a portion of at least one of the housing or the cover substrate comprises the glass-based article of claim 16 .
23. A glass, comprising:
greater than or equal to 55.0 mol % to less than or equal to 65.0 mol % SiO 2 ,
greater than or equal to 10.0 mol % to less than or equal to 15.0 mol % Al 2 O 3 ,
greater than or equal to 0 mol % to less than or equal to 10.0 mol % B 2 O 3 ,
greater than or equal to 6.0 mol % to less than or equal to 15.0 mol % K 2 O,
greater than or equal to 3.5 mol % to less than or equal to 6.0 mol % P 2 O 5 , and
1.4<(R 2 O+P 2 O 5 )/Al 2 O 3 <1.9, wherein R 2 O R 2 O is the total amount of monovalent metal oxides,
wherein the glass exhibits no substantial phase separation.
24. The glass of claim 23 , further comprising:
greater than or equal to 2.0 mol % to less than or equal to 5.0 mol % Li 2 O.
25. The glass of claim 23 , comprising an average field strength of alkali modifiers that is less than or equal to 0.18.
26. The glass of claim 23 , comprising greater than or equal to 4.5 mol % to less than or equal to 5.5 mol % P 2 O 5 .
27. The glass of claim 23 , further comprising greater than or equal to 0 mol % to less than or equal to 11 mol % Na 2 O.
28. The glass of claim 23 , further comprising SnO 2 .
29. The glass of claim 23 , wherein R 2 O/Al 2 O 3 is in an amount that is less than or equal to 1.4, wherein R 2 O is the total amount of monovalent metal oxides.
30. The glass of claim 23 , wherein the glass comprises less than 1 globular chain platinum defect per pound.