Patent ID: 11926564
Assignee: CORNING INCORPORATED
Field: Materials, metallurgy (Chemistry)
Classification: CPC C  Y | IPC C

Claim 0:
1. A silicate glass, the silicate glass having a Vickers crack initiation threshold of greater than 25 kgf and comprising:
at least about 50 mol % SiO2;
at least about 10 mol % Na2O;
Al2O3, wherein −0.5 mol % Al2O3 (mol %)-Na2O (mol %) 2 mol %;
B2O3, wherein (i) B2O3≤8.0 mol %, and (ii) B2O3 (mol %)−(Na2O (mol %)−Al2O3 (mol %)) 4.5 mol %; and
at least 0.11 mol % of at least one transition metal oxide colorant, the transition metal oxide colorant comprising at least one of V2O5, NiO, CuO, Cr2O3, MnO2, Fe2O3, and Co3O4;
wherein the silicate glass is black and exhibits color coordinates:
L*: 24 to 30;
a*: −4.5 to 0.5; and
b*: −1.1 to 1.3; and

wherein the silicate glass exhibits a transmission of less than 1% at each wavelength in the range of from 400 nm to 770 nm.