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US 11,447,415 B2Granted
Zircon compatible, ion exchangeable glass with high damage resistance
AssigneeCorning Incorporated
InventorsMatthew John Dejneka, Adam James Ellison, John Christopher Mauro
Life of this patent
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Abstract
Glasses having a high degree of resistance to damage cause by abrasion, scratching, indentation, and the like are disclosed. In embodiments, the glasses may include at least 50 mol % SiO2; 9 mol % to 22 mol % Al2O3; Na2O; Li2O; at least 10 mol % R2O, wherein R2O is the sum of alkali metal oxides in the glass; 2.7 mol % to 4.5 mol % B2O3; and greater than 0.1 mol % of MgO+ZnO, wherein (B2O3—(R2O—Al2O3)) is greater than or equal to 3.
Claims20
A glass comprising:
- at least 50 mol % SiO2;
- 9 mol % to 22 mol % Al2O3;
- Na2O;
- Li2O;
- at least 10 mol % R2O, wherein R2O is the sum of alkali metal oxides in the glass;
- 2.7 mol % to 4.5 mol % B2O3;
- and
- greater than 0.1 mol % of MgO+ZnO, wherein (B2O3 —(R2O—Al2O3)) is greater than or equal to 3.
5 more elements
An ion exchanged glass article comprising:
- at least 50 mol % SiO2;
- 9 mol % to 22 mol % Al2O3;
- Na2O;
- Li2O;
- at least 10 mol % R2O, wherein R2O is the sum of alkali metal oxides in the glass article;
- 3 mol % to 4.5 mol % B2O3, wherein (B2O3—(R2O—Al2O3)) is greater than or equal to 3;
- greater than 0.1 mol % of MgO+ZnO;
- and
- a layer under a compressive stress of at least 600 MPa.
6 more elements
Dependencies are inferred from the claim text.