US 11,926,564 B2
Transition metal-containing, ion exchangeable colored glasses
Xiaoju Guo, Painted Post, NY (US); Jeffrey Todd Kohli, Corning, NY (US); John Christopher Mauro, Corning, NY (US); and Ronald Leroy Stewart, Elmira, NY (US)
Assigned to CORNING INCORPORATED, Corning, NY (US)
Appl. No. 14/764,786
Filed by CORNING INCORPORATED, Corning, NY (US)
PCT Filed Jan. 28, 2014, PCT No. PCT/US2014/013286
§ 371(c)(1), (2) Date Jul. 30, 2015,
PCT Pub. No. WO2014/120641, PCT Pub. Date Aug. 7, 2014.
Claims priority of provisional application 61/759,053, filed on Jan. 31, 2013.
Prior Publication US 2015/0368149 A1, Dec. 24, 2015
This patent is subject to a terminal disclaimer.
Int. Cl. C03C 3/085 (2006.01); C03C 3/083 (2006.01); C03C 3/087 (2006.01); C03C 3/091 (2006.01); C03C 3/097 (2006.01); C03C 4/02 (2006.01); C03C 21/00 (2006.01)
CPC C03C 3/097 (2013.01) [C03C 3/083 (2013.01); C03C 3/085 (2013.01); C03C 3/087 (2013.01); C03C 3/091 (2013.01); C03C 4/02 (2013.01); C03C 21/002 (2013.01); C03C 2204/04 (2013.01); Y10T 428/315 (2015.01)] 28 Claims
OG exemplary drawing
 
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.