US 12,378,151 B2
Phase-separated glass compositions
Robert Randall Hancock, Jr., Corning, NY (US); Aize Li, Painted Post, NY (US); and Liying Zhang, Painted Post, NY (US)
Assigned to CORNING INCORPORATED, Corning, NY (US)
Filed by Corning Incorporated, Corning, NY (US)
Filed on May 13, 2022, as Appl. No. 17/743,703.
Claims priority of provisional application 63/190,877, filed on May 20, 2021.
Prior Publication US 2022/0371939 A1, Nov. 24, 2022
Int. Cl. C03C 3/089 (2006.01); C03B 32/00 (2006.01)
CPC C03C 3/089 (2013.01) [C03B 32/00 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A borosilicate-based composition, comprising:
50-85 mol % SiO2,
>15-30 mol % B2O3,
>0-5 mol % SnO2, and
5.5-20 mol % R2O, where R2O is a total amount of Li2O, Na2O, K2O, Rb2O, and Cs2O,
wherein the composition has a Young's Modulus less than 64 GPa, and the borosilicate-based composition is phase separated into a silicate glass and a borate glass.