US 11,897,808 B2
Tunable glass compositions having improved mechanical durability
Xiaoju Guo, Pittsford, NY (US); Peter Joseph Lezzi, Corning, NY (US); and Jian Luo, Painted Post, NY (US)
Assigned to Corning Incorporated, Corning, NY (US)
Filed by Corning Incorporated, Corning, NY (US)
Filed on Aug. 26, 2021, as Appl. No. 17/412,502.
Claims priority of provisional application 63/070,462, filed on Aug. 26, 2020.
Prior Publication US 2022/0064055 A1, Mar. 3, 2022
Int. Cl. C03C 3/091 (2006.01); C03C 10/00 (2006.01); C03C 4/02 (2006.01); C03C 21/00 (2006.01)
CPC C03C 10/0054 (2013.01) [C03C 4/02 (2013.01); C03C 10/0027 (2013.01); C03C 21/002 (2013.01); C03C 2204/04 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A glass composition comprising:
greater than or equal to 24 mol % and less than or equal to 60 mol % SiO2;
greater than or equal to 23 mol % and less than or equal to 35 mol % Al2O3;
greater than or equal to 3.5 mol % and less than or equal to 35 mol % B2O3;
greater than 0 mol % and less than 19.99 mol % Li2O;
greater than 0 mol % and less than or equal to 10 mol % Na2O; and
greater than 0.01 mol % and less than or equal to 3 mol % K2O, wherein
R2O is greater than or equal to 12 mol % and less than or equal to 20 mol %, R2O being the sum of Li2O, Na2O, and K2O.