US 11,905,208 B2
Glass and glass-ceramic compositions
Alexandra Lai Ching Kao Andrews Mitchell, Ithaca, NY (US); and Steven Alvin Tietje, Lindley, NY (US)
Assigned to Corning Incorporated, Corning, NY (US)
Filed by Corning Incorporated, Corning, NY (US)
Filed on May 13, 2021, as Appl. No. 17/319,538.
Claims priority of provisional application 63/024,835, filed on May 14, 2020.
Claims priority of application No. 10-2020-0120241 (KR), filed on Sep. 18, 2020.
Prior Publication US 2021/0355021 A1, Nov. 18, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. C03C 10/00 (2006.01); C03C 10/12 (2006.01); C03C 3/095 (2006.01); C03C 3/062 (2006.01)
CPC C03C 3/095 (2013.01) [C03C 3/062 (2013.01); C03C 10/0027 (2013.01); C03C 2204/00 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A glass-ceramic having a Young's modulus in a range of 119 GPa to 177 GPa, comprising homogenous and internally nucleated crystalline microstructures, the glass-ceramic having a composition, comprising:
30 mol % to 40 mol % SiO2;
25 mol % to 35 mol % Al2O3;
8 mol % to 14 mol % Y2O3;
4 mol % to 18 mol % TiO2; and
5 mol % to 25 mol % R2O,
wherein R2O is the sum of Na2O, K2O, Li2O, Rb2O, and Cs2O.