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

Claim 14:
15. A silicate glass, the silicate glass having a Vickers crack initiation threshold of greater than 25 kgf, the silicate glass comprising:
at least about 50 mol % SiO2;
at least 10 mol % Na2O;
0 mol % K2O;
Al2O3, wherein Al2O3 (mol %)<Na2O (mol %);
2.90 mol % to 5.00 mol % B2O3, wherein B2O3 (mol %)−(Na2O (mol %)−Al2O3 (mol %)) 2 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; and
wherein the silicate glass ac and exhibits color coordinates:
L*: 24 to 26.1;
a*: 0 to 0.20; and
b*: −2.0 to −0.5; 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.