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US 12,612,329 B2Granted
Transition metal-containing, ion exchangeable colored glasses
AssigneeCorning Incorporated
InventorsXiaoju Guo, Jeffrey Todd Kohli, John Christopher Mauro, Ronald Leroy Stewart
Life of this patent
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Abstract
Glasses that can be chemically strengthened and are colored by transition metals. Most of the glasses are black, with some having high damage resistance and compressive surface layers having high compressive stress and depth of layer after ion exchange. These colored glasses do not require a post-forming heat treatment to produce color and are formable by fusions drawing, rolling, slot drawing, and float glass processes.
Claims20
A silicate glass comprising:
- from 60 mol % to 66 mol % SiO2;
- from 9 mol % to 22 mol % Al2O3;
- at least 10 mol % R2O, where R2O is a total amount of Li2O, Na2O, K2O, Rb2O, and Cs2O;
- from 3 mol % to less than or equal to 8.0 mol % B2O3;
- 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, Co3O4, or combinations thereof, wherein B2O3 (mol %)−(R2O (mol %)−Al2O3 (mol %))≥4.5 mol %;
- and
- wherein the silicate glass exhibits color coordinates:
- L*:
- 23 to 30;
- a*:
- −6 to 0;
- and
- b*:
- −5 to 3.
12 more elements
A silicate glass comprising:
- from 60 mol % to 66 mol % SiO2;
- from 12 mol % to 20 mol % Al2O3;
- at least 10 mol % R2O, where R2O is a total amount of Li2O, Na2O, K2O, Rb2O, and Cs2O;
- from 0 mol % to 5 mol % K2O;
- from 3 mol % to less than or equal to 10 mol % B2O3;
- 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, or Co3O4,
- wherein the silicate glass exhibits color coordinates:
- L*:
- 24 to 30;
- a*:
- −4.5 to 0.5;
- b*:
- −1.1 to 1.3, and
- wherein 0.6<[M2O3 (mol %)/RxO (mol %)]<1.4, where M2O3 (mol %)=Al2O3 (mol %)+B2O3 (mol %), where RxO is the sum of monovalent and divalent cation oxides present in the silicate glass.
12 more elements
A silicate glass comprising:
- from 60 mol % to 66 mol % SiO2;
- from 9 mol % to 22 mol % Al2O3;
- at least 10 mol % R2O, where R2O is a total amount of Li2O, Na2O, K2O, Rb2O, and Cs2O;
- from 3 mol % to less than or equal to 8.0 mol % B2O3;
- 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, Co3O4, or combinations thereof,
- wherein B2O3 (mol %)−(R2O (mol %)−Al2O3 (mol %))≥4.5 mol %;
- 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.
6 more elements
Dependencies are inferred from the claim text.