X-ray induced coloration in glass or glass-ceramic articles

Patent metadata

Field	Value
Publication number	US-10150699-B2
Application number	US-201514960941-A
Country	US
Kind code	B2
Filing date	Dec 7, 2015
Priority date	Dec 11, 2014
Publication date	Dec 11, 2018
Grant date	Dec 11, 2018

Abstract

Embodiments of the present disclosure are directed to methods for inducing color change in glass and glass-ceramic articles. According to one embodiment, color change may be x-ray induced in glass or glass-ceramic articles. The method for x-ray inducing color change may include exposing the glass or glass-ceramic article to x-rays at a temperature of up to 200° C. to induce a colored area in the glass or glass-ceramic article. The glass or glass-ceramic article may comprise: 50-85 mole % SiO2; 5-25 mole % Al2O3; 0-15 mole % P2O5; 0-15 mole % B2O3; 5-25 mole % R2O, wherein R2O=Li2O+Na2O+K2O.

First claim

What is claimed is:

1. A colored glass or glass-ceramic article having a thickness ≤1.5 mm and comprising an x-ray induced colored area in the glass or glass-ceramic article, the glass or glass-ceramic article comprising:
55-75 mole % SiO 2 ;
5-25 mole % Al 2 O 3 ;
0-10 mole % P 2 O 5 ;
0-10 mole % B 2 O 3 ;
5-25 mole % R 2 O, wherein R 2 O=Li 2 O+Na 2 O+K 2 O; and
0.1 to 2 mole % of at least one coloring agent chosen from CuO, MnO 2 , Ag 2 O, or combinations thereof.

2. The article of claim 1 , wherein the colored glass or glass-ceramic article comprises 2-10 mole % B 2 O 3 .

3. The article of claim 1 , wherein the colored glass or glass-ceramic article comprises 2-10 mole % P 2 O 5 .

4. The article of claim 1 , wherein the colored glass or glass-ceramic article comprises 55-75 mole % SiO 2 .

5. The article of claim 1 , wherein the colored glass or glass-ceramic article comprises 10-20 mole % Al 2 O 3 .

6. The article of claim 1 , wherein the colored glass or glass-ceramic article comprises 0.2 to 1.0 mole % coloring agent.

7. The article of claim 1 , wherein the coloring agent also includes SnO 2 .

8. The article of claim 1 , wherein the colored glass or glass-ceramic article comprises −20 mol %<R 2 O+RO—(Al 2 O 3 +P 2 O 5 +B 2 O 3 )<20 mol %, wherein RO=MgO+CaO+SrO+BaO+ZnO.

9. The article of claim 1 , wherein the colored glass or glass-ceramic article comprises −10 mol %<R 2 O+RO—(Al 2 O 3 +P 2 O 5 +B 2 O 3 )<10 mol %, wherein RO=MgO+CaO+SrO+BaO+ZnO.

10. The article of claim 1 , wherein the colored area comprises a layer that extends from a surface of the glass or glass-ceramic article to a depth of 1-500 μm.

11. The article of claim 1 , wherein the glass or glass-ceramic article is chemically or thermally strengthened.

12. The article of claim 1 , wherein the colored glass or glass-ceramic article comprises 10-20 mole % Na 2 O.

Assignees

• Corning Inc

Inventors

• Baum Jr John F
• Borrelli Nicholas Francis
• Card Candy Elizabeth
• Dejneka Matthew John
• Fanning Eileen Marie
• Fitzsimmons Karen Estelle

Classifications

• C03C3/085

  containing an oxide of a divalent metal · CPC title

• C03C4/02

  for coloured glass · CPC title

• C03C3/093

  containing zinc or zirconium · CPC title

• C03C3/097

  containing phosphorus, niobium or tantalum · CPC title

• C03C3/087

  containing calcium oxide, e.g. common sheet or container glass · CPC title