Glass compositions and methods with steam treatment haze resistance
AssigneeCorning Incorporated
InventorsTimothy Michael Gross, Jingshi Wu
Life of this patent
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Abstract
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 avoid the formation of haze during the treatment process. The methods of forming the glass-based articles may include elevated pressures and/or multiple exposures to water vapor containing environments selected to avoid the formation of haze during the treatment process.
Claims16
A glass configured for strengthening by steam treatment, the glass comprising:
- greater than or equal to 55 mol % to less than or equal to 70 mol % SiO2,
- greater than or equal to 3 mol % to less than or equal to 17 mol % Al2O3,
- greater than or equal to 3 mol % to less than or equal to 15 mol % P2O5,
- greater than or equal to 1 mol % to less than or equal to 7 mol % Li2O, and
- greater than or equal to 5 mol % to less than or equal to 20 mol % K2O.
A glass configured for strengthening by steam treatment, the glass comprising:
- greater than or equal to 57 mol % to less than or equal to 68 mol % SiO2,
- greater than or equal to 5 mol % to less than or equal to 15 mol % Al2O3,
- greater than or equal to 3 mol % to less than or equal to 12 mol % P2O5,
- greater than or equal to 1 mol % to less than or equal to 4 mol % Li2O, and
- greater than or equal to 5 mol % to less than or equal to 20 mol % K2O.
A glass configured for strengthening by steam treatment, the glass comprising:
- greater than or equal to 59 mol % to less than or equal to 63 mol % SiO2,
- greater than or equal to 9 mol % to less than or equal to 14 mol % Al2O3,
- greater than or equal to 3 mol % to less than or equal to 12 mol % P2O5,
- greater than or equal to 1 mol % to less than or equal to 4 mol % Li2O,
- greater than or equal to 5 mol % to less than or equal to 20 mol % K2O,
- greater than 0 mol % Na2O.
Dependencies are inferred from the claim text.