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US 12,692,188 B2Granted
Glass-ceramic compositions, articles, and methods of making the same
AssigneeGüRok Holding B.V.
InventorsJohn C. Mauro, Ye Luo
Life of this patent
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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.
Claims5
A glass-ceramic composition comprising:
- a) from about 5 mol % to about 7.5 mol % of Al2O3;
- b) from about 20 mol % to about 25 mol % of Li2O;
- c) from about 48 mol % to about 80 mol % of SiO2;
- d) from 0 mol % to about 8 mol % of B2O3,
- e) from 0 mol % to about 8 mol % of ZrO2,
- f) from 0.01 mol % to about 1 mol % of P2O5, and
- g) from 0 mol % to about 5 mol % of Na2O
- having a major crystalline phase comprising from about 20% to about 80% of a β-spodumene phase and from about 20% to about 80% of a petalite phase and a minor crystalline phase comprising up to 10% of a lithium silicate crystalline phase;
- wherein the lithium silicate crystalline phase comprises a lithium metasilicate crystalline phase;
- and wherein the composition exhibits density from about 2.00 g/cm3 to about 2.6 g/cm3.
7 more elements
Dependencies are inferred from the claim text.