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US 11,078,105 B2Granted
Transparent ion-exchangeable silicate glasses with high fracture toughness
AssigneeCorning Incorporated
InventorsJian Luo, John Christopher Mauro
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Abstract
Provided herein are glass based articles comprising SiO2 in a range from about 20 mol % to about 80 mol %; Al2O3 in a range from about 2 mol % to about 60 mol %; MgO; Li2O; La2O3 in an amount greater than or equal to about 3 mol %; a sum of alkali metal oxides (R2O) is greater than or equal to about 6 mol %; and a sum of MgO and Al2O3 is greater than or equal to about 28 mol %, wherein the glass based article is free of B2O3.
Claims14
A glass based article comprising:
- SiO2 in a range from 20 mol % to 63 mol %;
- Al2O3 in a range from 15 mol % to 60 mol %;
- MgO;
- Li2O;
- La2O3 in an amount greater than or equal to 3 mol %;
- a sum of alkali metal oxides (R2O) is greater than or equal to 6 mol %;
- and
- a sum of MgO and Al2O3 is greater than or equal to 28 mol %,
- wherein the glass based article is free of B2O3.
6 more elements
Dependencies are inferred from the claim text.