Colored glass articles having improved mechanical durability

Patent metadata

Field	Value
Publication number	US-12054422-B2
Application number	US-202318124849-A
Country	US
Kind code	B2
Filing date	Mar 22, 2023
Priority date	Jun 18, 2021
Publication date	Aug 6, 2024
Grant date	Aug 6, 2024

Abstract

A colored glass article may include 50-80 mol % SiO2; 7-20 mol % Al2O3; 1-35 mol % R2O, wherein R2O comprises at least one of Li2O, Na2O, and K2O; 1×10−6-10 mol % of a colorant, wherein the colorant comprises at least one of Cr2O3, Au, Ag, CuO, NiO, Co3O4, TiO2, CeO2; and 12-24 mol % of Al2O3+MgO+CaO+ZnO. The colored glass article may have a transmittance color coordinate in the CIELAB color space with an L* value of 55 to 96.5. The colored glass article may have a compressive stress profile with a depth of compression ≥0.15 t a thickness t from 0.4 mm-5 mm, a compressive stress ≥200 MPa, and a central tension ≥60 MPa. The colored glass article may have a dielectric constant from 5.6 to 6.4 over the frequency range from 10 GHz to 60 GHz.

First claim

The invention claimed is:

1. A colored glass article, comprising:
greater than or equal to 50 mol % and less than or equal to 80 mol % SiO 2 ;
greater than or equal to 712 mol % and less than or equal to 20 mol % Al 2 O 3 ;
greater than or equal to 1 mol % and less than or equal to 15 mol % B 2 O 3 ;
greater than or equal to 1 mol % and less than or equal to 20 mol % Li 2 O;
greater than 0 mol % and less than or equal to 15 mol % Na 2 O;
greater than or equal to 1 mol % and less than or equal to 35 mol % R 2 O, where R 2 O is the sum of Li 2 O, Na 2 O, and K 2 O;
greater than 1×10 −6 mol % and less than or equal to 5 mol % of a colorant,
wherein the colorant comprises at least one of Cr 2 O 3 , Au, Ag, CuO, NiO, Co 3 O 4 , TiO 2 , CeO 2 ; and
greater than or equal to 12 mol % and less than or equal to 24 mol % of (Al 2 O 3 +MgO+CaO+ZnO),
wherein the colored glass article comprises a thickness within a range of greater than or equal to 0.4 mm to less than or equal to 5 mm;
wherein the colored glass article comprises a surface compressive stress greater than or equal to 200 MPa and a central tension greater than or equal to 60 MPa; and
wherein the colored glass article comprises a dielectric constant within a range of 5.6 to 6.4 at a frequency of 10 GHz.

2. The colored glass article of claim 1 , wherein, at the thickness of the colored glass article, glass of the colored glass article comprises a transmittance color coordinate in CIELAB color space, as measured under F2 illumination and a 10° standard observer angle, comprising an L* value greater than or equal to 55 and less than or equal to 96.5, a* greater than or equal to −35 and less than or equal to 60 but excluding a* greater than −0.3 and less than 0.3, and b* greater than or equal to −90 and less than or equal to 80 but excluding b* greater than −0.5 and less than 0.5.

3. The colored glass article of claim 2 , wherein, at the thickness of the colored glass article, glass of the article comprises an average transmittance of greater than or equal to 10% and less than or equal to 92% at the thickness over a wavelength range of 380 nm to 750 nm.

4. The colored glass article of claim 1 , wherein, at 2.06 mm thickness, glass compositionally matching that of the article comprises a transmittance color coordinate in CIELAB color space, as measured under F2 illumination and a 10° standard observer angle, comprising an L* value greater than or equal to 55 and less than or equal to 96.5, a* greater than or equal to −35 and less than or equal to 60 but excluding a* greater than −0.3 and less than 0.3, and b* greater than or equal to −90 and less than or equal to 80 but excluding b* greater than −0.5 and less than 0.5.

5. The colored glass article of claim 1 , wherein, at the thickness of the colored glass article, glass of the article comprises a transmittance color coordinate in CIELAB color space comprising an L* value greater than or equal to 55 and less than or equal to 96.5 and an a* value and a b* value, wherein |a*| is ≥0.3 and |b*| is ≥0.5, as measured under F2 illumination and a 10° standard observer angle.

6. The colored glass article of claim 1 , wherein, at 2.06 mm thickness, glass compositionally matching that of the article comprises a transmittance color coordinate in CIELAB color space comprising an L* value greater than or equal to 55 and less than or equal to 96.5 and an a* value and a b* value, wherein |a*| is ≥0.3 and |b*| is ≥0.5, as measured under F2 illumination and a 10° standard observer angle.

7. A colored glass article comprising:
greater than or equal to 50 mol % and less than or equal to 80 mol % SiO 2 ;
greater than or equal to 1 mol % and less than or equal to 12 mol % B 2 O 3 ;
greater than or equal to 1 mol % and less than or equal to 20 mol % Li 2 O;
greater than 0 mol % and less than or equal to 15 mol % Na 2 O;
greater than or equal to 1 mol % and less than or equal to 35 mol % R 2 O, wherein R 2 O is the sum of Li 2 O, Na 2 O, and K 2 O;
greater than 1×10 −6 mol % and less than or equal to 5 mol % of a colorant, wherein the colorant comprises at least one of Cr 2 O 3 , Au, Ag, CuO, NiO, Co 3 O 4 , TiO 2 , CeO 2 ; and
greater than or equal to 12 mol % and less than or equal to 24 mol % of (Al 2 O 3 +MgO+CaO+ZnO),
wherein the colored glass article comprises a thickness within a range of greater than or equal to 0.4 mm to less than or equal to 5 mm;
wherein, at the thickness of the colored glass article, the colored glass article comprises a transmittance color coordinate in CIELAB color space comprising an L* value greater than or equal to 55 and less than or equal to 96.5 and an a* value and a b* value, wherein |a*| is ≥0.3 and |b*| is ≥0.5, as measured under F2 illumination and a 10° standard observer angle;
wherein the colored glass article comprises a surface compressive stress greater than or equal to 200 MPa and a central tension greater than or equal to 60 MPa; and
wherein the colored glass article comprises a dielectric constant within a range of 5.6 to 6.4 at a frequency of 10 GHz.

8. The colored glass article of claim 7 , the colored glass article comprises greater than or equal to 7 mol % and less than or equal to 18 mol % Li 2 O.

9. The colored glass article of claim 8 , the colored glass article comprises greater than or equal to 0.01 mol % and less than or equal to 12 mol % Na 2 O.

10. The colored glass article of claim 9 , wherein the glass of the glass article is such that constituents thereof satisfy the following inequality: [5.72*Al 2 O 3 (mol %)−21.4*ZnO (mol %)−2.5*P 2 O 5 (mol %)−35*Li 2 O (mol %)−16.6*B 2 O 3 (mol %)−20.5*MgO (mol %)−23.3*Na 2 O (mol %)−27.9*SrO (mol %)−18.5*K 2 O (mol %)−26.3*CaO (mol %)]>−609 mol %.

11. A colored glass article comprising:
greater than or equal to 50 mol % and less than or equal to 80 mol % SiO 2 ;
greater than or equal to 712 mol % and less than or equal to 20 mol % Al 2 O 3 ;
greater than or equal to 1 mol % and less than or equal to 15 mol % B 2 O 3 ;
greater than or equal to 1 mol % and less than or equal to 20 mol % Li 2 O;
greater than 0 mol % and less than or equal to 15 mol % Na 2 O;
greater than or equal to 1 mol % and less than or equal to 35 mol % R 2 O, wherein R 2 O is the sum of Li 2 O, Na 2 O, and K 2 O;
greater than 1×10 −6 mol % and less than or equal to 5 mol % of a colorant, wherein the colorant comprises at least one transition and/or rare earth metal; and
greater than or equal to 12 mol % and less than or equal to 24 mol % of (Al 2 O 3 +MgO+CaO+ZnO),
wherein the colored glass article comprises a thickness within a range of greater than or equal to 0.4 mm to less than or equal to 5 mm;
wherein, at the thickness of the colored glass article, the colored glass article comprises a transmittance color coordinate in CIELAB color space comprising an L* value greater than or equal to 55 and less than or equal to 96.5 and an a* value and a b* value, wherein |a*| is ≥0.3 and |b*| is ≥0.5, as measured under F2 illumination and a 10° standard observer angle;
wherein the colored glass article comprises a surface compressive stress greater than or equal to 200 MPa and a central tension greater than or equal to 60 MPa; and
wherein the colored glass article comprises a dielectric constant within a range of 5.6 to 6.4 at a frequency of 10 GHz.

12. The colored glass article of claim 11 , wherein the colorant comprises at least one transition and/or rare earth metal selected from the group consisting of Ag, Au, Ni, Co, Cr, Cu, Ce, Ti, V, Mn, Nb, Mo, Hf, W, Nd, and Er.

13. The colored glass article of claim 12 , wherein the colorant comprises at least one transition and/or r

Assignees

• Corning Inc

Inventors

• Guo Xiaoju
• Kohl Jesse
• Wiles Nicole Taylor

Classifications

• C03C21/002

  to perform ion-exchange between alkali ions (C03C21/005 takes precedence) · CPC title

• C03C4/02

  for coloured glass · CPC title

• C03C3/083

  containing aluminium oxide or an iron compound · CPC title

• C03C3/11

  containing halogen or nitrogen · CPC title

• C03C3/097

  containing phosphorus, niobium or tantalum · CPC title