Ion exchangeable glasses
AssigneeCorning Incorporated
InventorsChristy Lynn Chapman, Matthew John Dejneka, Sinue Gomez, Lisa Ann Lamberson
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Abstract
An ion exchangeable glass that is free of lithium and comprising 0.1-10 mol % P2O5 and at least 5 mol % Al2O3. The presence of P2O5 enables the glass to be ion exchanged more quickly and to a greater depth than comparable glasses that do not contain P2O5.
Claims21
An ion exchangeable aluminosilicate glass, the ion exchangeable aluminosilicate glass comprising 1-10 mol % P2O5, MgO, and at least 5 mol % Al2O3, wherein 77 mol % ≧SiO2+Al2O3≧70 mol % and ΣR′O≦0.5P2O5(mol %), where R′=Mg, Ca, Ba, and Sr, and wherein the glass comprises at least one monovalent metal oxide modifier R2O, wherein P2O5 ≦[Σ(R2O)−Al2O3].
An ion exchangeable aluminosilicate glass, the ion exchangeable aluminosilicate glass comprising 1-10 mol % P2O5, MgO, and 3-25 mol % Na2O, wherein 77 mol % ≧SiO2 +Al2O3 ≧70 mol % and ΣR′O ≦0.5P2O5(mol %), where R′=Mg, Ca, Ba, and Sr, wherein P2O5 ≦[(Na2O+K2O+Rb2O+Ag2O+Cs2O)−Al2O3], and wherein potassium has a diffusivity of at least 7.8×10−11cm2/sec in the glass.
Dependencies are inferred from the claim text.