Glass-ceramic compositions, articles, and methods of making the same
AssigneeGüRok Holding B.V.
InventorsJohn C. MAURO, Ye LUO
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Abstract
Disclosed herein are glass-ceramic compositions, articles made from the disclosed glass-ceramic compositions, and methods of making the same. More specifically disclosed herein is a glass-ceramic composition comprising: a) from about 2 mol % to about 20 mol % of Al2O3; b) from about 2 mol % to about 45 mol % of Li2O; and c) from about 48 mol % to about 80 mol % of SiO2; having a β-spodumene phase and a lithium silicate crystalline phase, and optionally a petalite phase.
Claims111
A glass-ceramic composition comprising:
- a) from about 2 mol % to about 20 mol % of Al2O3;
- b) from about 2 mol % to about 45 mol % of Li2O;
- and
- c) from about 48 mol % to about 80 mol % of SiO2;
- having a β-spodumene phase and a lithium silicate crystalline phase, and optionally a petalite phase.
A glass-ceramic composition comprising:
- a) Al2O3 present from about 2 mol % to about 20 mol %,
- b) SiO2 present from about 48 mol % to about 80 mol %;
- c) R′2O present from greater than 0 mol % to about 45 mol %;
- and
- wherein R′2O comprises Li2O, Na2O, K2O, Ag2O, Cu2O, CuO, or a combination thereof, wherein the composition comprises a major crystalline phase comprising a β-spodumene phase, and optionally, a petalite phase.
A glass-ceramic article comprising:
- a) from about 2 mol % to about 20 mol % of Al2O3;
- b) from about 2 mol % to about 45 mol % of Li2O;
- and
- c) from about 48 mol % to about 80 mol % of SiO2;
- having a β-spodumene phase and a lithium silicate crystalline phase, and optionally a petalite phase.
A glass-ceramic article comprising:
- a) Al2O3 present from about 2 mol % to about 20 mol %
- b) SiO2 present from about 48 mol % to about 80 mol %;
- and
- c) R′2O present from greater than 0 mol % to about 45 mol %;
- wherein R′2O comprises Li2O, Na2O, K2O, Ag2O, Cu2O, CuO, or a combination thereof, wherein the composition comprises a major crystalline phase comprising a β-spodumene phase, and optionally, a petalite phase.
A method comprising:
- a) forming a mixture comprising:
- from about 2 mol % to about 20 mol % of Al2O3:
- from about 2 mol % to about 45 mol % of Li2O;
- and
- from about 48 mol % to about 80 mol % of SiO2;
- b) forming a homogeneous composition;
- and
- c) ceramming the homogeneous composition to form a glass-ceramic composition.
The method of any one of claims 68-83, wherein the mixture further comprises
- a) from 0 mol % to about 8 mol % of B2O3, and
- b) from 0 mol % to about 8 mol % of Na2O. 85, The method of any one of claims 68-84, further comprising a step of ion exchange treatment comprising exposure to a salt bath, spray, paste, a vapor-assisted ion exchange, a plasma-assisted ion exchange, or any combination thereof.
The method of claim 85, wherein the ion exchange treatment is electrically accelerated.
Dependencies are inferred from the claim text.