Low-modulus ion-exchangeable glass compositions
AssigneeCorning Incorporated
InventorsTimothy Michael Gross, Jingshi Wu
Life of this patent
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Abstract
A glass composition includes: greater than or equal to 40 mol % and less than or equal to 57 mol % SiO2; greater than or equal to 15 mol % and less than or equal to 30 mol % Al2O3; greater than or equal to 0 mol % and less than or equal to 10 mol % B2O3; greater than or equal to 0 mol % and less than or equal to 10 mol % P2O5; greater than or equal to 14 mol % and less than or equal to 17 mol % Na2O; greater than or equal to 0 mol % and less than or equal to 7 mol % K2O; and greater than or equal to 0 mol % and less than or equal to 3 mol % Li2O. R2O/Al2O3 is greater than or equal to 0.8. B2O3+P2O5+K2O is greater than or equal to 3 mol % and less than or equal to 25 mol %.
Claims20
A glass composition comprising:
- greater than or equal to 40 mol % and less than or equal to 55 mol % SiO2;
- greater than or equal to 17.3 mol % and less than or equal to 30 mol % Al2O3;
- greater than or equal to 1 mol % and less than or equal to 10 mol % B2O3;
- greater than or equal to 0 mol % and less than or equal to 10 mol % P2O5;
- greater than or equal to 14 mol % R2O, wherein R2O is the sum of Na2O, K2O, and Li2O;
- greater than or equal to 0 mol % and less than or equal to 5 mol % K2O;
- and
- greater than or equal to 0 mol % and less than or equal to 3 mol % Li2O, wherein:
- R2O/Al2O3 is greater than or equal to 0.8 and less than or equal to 1.1;
- and
- B2O3+P2O5+K2O is greater than or equal to 3 mol % and less than or equal to 25 mol %.
An ion-exchanged glass article comprising:
- greater than or equal to 40 mol % and less than or equal to 55 mol % SiO2;
- greater than or equal to 17.3 mol % and less than or equal to 30 mol % Al2O3;
- greater than or equal to 1 mol % and less than or equal to 10 mol % B2O3;
- greater than or equal to 0 mol % and less than or equal to 10 mol % P2O5;
- greater than or equal to 14 mol % R2O, wherein R2O is the sum of Na2O, K2O, and Li2O;
- greater than or equal to 0 mol % and less than or equal to 5 mol % K2O;
- and
- greater than or equal to 0 mol % and less than or equal to 3 mol % Li2O, wherein:
- R2O/Al2O3 is greater than or equal to 0.8 and less than or equal to 1.1;
- B2O3+P2O5+K2O is greater than or equal to 3 mol % and less than or equal to 25 mol %;
- and
- a Young's modulus of the glass article, before being ion-exchanged, is greater than or equal to 40 GPa and less than or equal to 70 GPa.
Dependencies are inferred from the claim text.