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US 11,111,173 B2Granted
Lithium containing glasses
AssigneeCorning Incorporated
InventorsTimothy Michael Gross, Xiaoju Guo, Charlene Marie Smith
Life of this patent
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Abstract
A glass article including, on an oxide basis, from 60 mol % to 74 mol % SiO2, from 7 mol % to 18 mol % Al2O3, from 3 mol % to 16 mol % B2O3, from 0 mol % to 6 mol % Na2O, from 0 mol % to 5 mol % P2O5, from 5 mol % to 11 mol % Li2O, less than or equal to 0.2 mol % SnO2, and from 0.5 mol % to 6.5 mol % divalent cation oxides. The glass article has a molar ratio of Al2O3:(R2O+RO) greater than or equal to 0.9, where R2O is a sum of alkali metal oxides in mol % and RO is a sum of divalent cation oxides in mol %.
Claims18
A glass article comprising, on an oxide basis:
- from greater than or equal to 65 mol% to less than or equal to 74 mol% SiO2;
- from greater than or equal to 7 mol% to less than or equal to 12 mol% Al2O3;
- from greater than or equal to 5 mol% to less than or equal to 16 mol% B2O3;
- from greater than or equal to 0 mol% to less than or equal to 4 mol% Na2O;
- from greater than or equal to 0 mol% to less than or equal to 5 mol% P2O5;
- from greater than or equal to 5 mol% to less than or equal to 11 mol% Li2O;
- and
- from greater than or equal to 0.5 mol% to less than or equal to 6.5 mol% divalent cation oxides, wherein a molar ratio of Al2O3:(R2O+RO) is greater than or equal to 0.9, where R20 is a sum of alkali metal oxides in mol% and RO is a sum of divalent cation oxides in mol%.
5 more elements
Dependencies are inferred from the claim text.