Photosensitive glasses and glass ceramics and composite glass materials made therefrom

Patent metadata

Field	Value
Publication number	US-2022388895-A1
Application number	US-202217889781-A
Country	US
Kind code	A1
Filing date	Aug 17, 2022
Priority date	Jan 26, 2016
Publication date	Dec 8, 2022
Grant date	—

Abstract

Photosensitive lithium zinc aluminosilicate glasses that can be selectively irradiated and cerammed to provide patterned regions of glass and lithium-based glass ceramic, and composite glass articles made from such glasses and glass ceramics are provided. The lithium zinc aluminosilicate glass can be negatively photosensitive or positively photosensitive to radiation having a wavelength in a range from about 248 nm to about 360 nm.

First claim

1 . A lithium zinc aluminosilicate glass comprising at least one sensitizing agent and at least one nucleating agent, wherein the lithium zinc aluminosilicate glass is negatively photosensitive to radiation having a wavelength in a range from about 248 nm to about 360 nm and comprises:
from 60 wt % to about 80 wt % SiO 2 ; from about 2 wt % to about 12 wt % Al 2 O 3 ; from 6 wt % to 10 wt % ZnO; from 2 wt % to 10 wt % Li 2 O; from 0 wt % to 5 wt % K 2 O; from 0 wt % to 6 wt % F − ; from 0 wt % to 2 wt % CeO 2 ; and from 0 wt % to 2 wt % Ag.

2 . The lithium zinc aluminosilicate glass of claim 1 , wherein the at least one sensitizing agent comprises at least one of silver and cerium.

3 . The lithium zinc aluminosilicate glass of claim 1 , wherein the at least one nucleating agent comprises at least one halogen.

4 . The composite glass article of claim 1 , wherein the lithium zinc aluminosilicate glass comprises from 1 wt % to 2.93 wt % F − .

5 . The lithium zinc aluminosilicate glass of claim 1 , wherein the lithium zinc aluminosilicate glass comprises:
from 66 wt % to about 76 wt % SiO 2 ; from about 5 wt % to about 9 wt % Al 2 O 3 ; from about 5 wt % to about 8 wt % Li 2 O; from greater than 0 wt % to about 1 wt % K 2 O; from greater than 0 wt % to about 6 wt % F − ; from greater than 0 wt % to about 0.1 wt % CeO 2 ; from greater than 0 wt % to about 0.05 wt % Ag; and and from about 6 wt % to about 8 wt % ZnO.

6 . The composite glass article of claim 1 , wherein the glass ceramic is free of at least one of Na 2 O, MgO, P 2 O 5 , TiO 2 , ZrO 2 , and bromine.

7 . A lithium zinc aluminosilicate glass comprising at least one sensitizing agent and at least one nucleating agent, wherein the lithium zinc aluminosilicate glass is positively photosensitive to radiation having a wavelength in a range from about 248 nm to about 360 nm and comprises:
from 65 wt % to 80 wt % SiO 2 ; from 5 wt % to 16 wt % Al 2 O 3 ; from 5 wt % to 12 wt % ZnO from 2 wt % to 14 wt % Li 2 O; from 0 wt % to 1 wt % Na 2 O; from 0 wt % to 1 wt % K 2 O; from 0 wt % to 6 wt % F − ; from 0 wt % to 10 wt % Br − ; from 0 wt % to 2 wt % CeO 2 ; from 0 wt % to 2 wt % Ag; and from 0 wt % to 8 wt % ZrO 2 .

8 . The composite glass article of claim 7 , wherein the first region is spatially separate from the second region.

9 . The composite glass article of claim 7 , wherein the at least one sensitizing agent comprises at least one of silver and cerium.

10 . The composite glass article of claim 7 , wherein the lithium zinc aluminosilicate glass is photosensitive to radiation having a wavelength in a range from about 248 nm to about 360 nm.

11 . The composite glass article of claim 7 , wherein the at least one nucleating agent comprises at least one halogen.

12 . The composite glass article of claim 7 , wherein the lithium zinc aluminosilicate glass comprises from 1 wt % to 2.93 wt % F − .

13 . The composite glass article of claim 7 , wherein the lithium zinc aluminosilicate glass comprises:
from about 68 wt % to about 78 wt % SiO 2 ; from about 0.01 wt % to about 0.07 wt % CeO 2 ; from about 0.01 wt % to about 0.05 wt % Ag; and from about 5 wt % to about 10 wt % Li 2 O.

14 . A composite glass article comprising:
a first region and a second region in contact with the first region at an interface, the first region comprising a lithium-based glass ceramic, the lithium-based glass ceramic comprising a ceramic phase and a residual glass phase, wherein the ceramic phase comprises a lithium aluminosilicate phase having a lithium aluminosilicate stuffed β-quartz structure, and the second region comprising a lithium zinc aluminosilicate glass, wherein the lithium zinc aluminosilicate glass is transparent and comprises at least one sensitizing agent and at least one nucleating agent, and the lithium zinc aluminosilicate glass is negatively photosensitive and comprises: from 60 wt % to 80 wt % SiO 2 ; from 3 wt % to 12 wt % Al 2 O 3 ; from 6 wt % to 10 wt % ZnO; from 2 wt % to 10 wt % Li 2 O; from 0 wt % to 5 wt % K 2 O; from 0 wt % to 6 wt % F − ; from 0 wt % to 2 wt % CeO 2 ; and from 0 wt % to 2 wt % Ag.

15 . The composite glass article of claim 14 , wherein the first region is spatially separate from the second region.

16 . The composite glass article of claim 14 , wherein the at least one sensitizing agent comprises at least one of silver and cerium.

17 . The composite glass article of claim 14 , wherein the lithium zinc aluminosilicate glass is photosensitive to radiation having a wavelength in a range from about 248 nm to about 360 nm.

18 . The composite glass article of claim 14 , wherein the at least one nucleating agent comprises at least one halogen.

19 . The composite glass article of claim 14 , wherein the lithium zinc aluminosilicate glass comprises:
from about 66 wt % to about 76 wt % SiO 2 ; from about 5 wt % to about 9 wt % Al 2 O 3 ; from about 5 wt % to about 8 wt % Li 2 O; from greater than 0 wt % to about 1 wt % K 2 O; from greater than 0 wt % to about 6 wt % F − ; from greater than 0 wt % to about 0.1 wt % CeO 2 ; from greater than 0 wt % to about 0.05 wt % Ag; and and from about 6 wt % to about 8 wt % ZnO.

20 . The composite glass article of claim 14 , wherein the lithium zinc aluminosilicate glass comprises from 1 wt % to 2.93 wt % F − .

Assignees

• Corning Inc

Inventors

• Beall George Halsey
• Borrelli Nicholas Francis
• Schroeder Iii Joseph Francis
• Seward Iii Thomas Philip

Classifications

• C03B32/02

  Thermal crystallisation, e.g. for crystallising glass bodies into glass-ceramic articles {(C03B27/012 takes precedence)} · CPC title

• C03C3/078

  containing an oxide of a divalent metal, e.g. an oxide of zinc · CPC title

• C03C3/112 Primary

  containing fluorine · CPC title

• C03C23/0025

  by a laser beam · CPC title

• Y02P40/57

  Improving the yield, e-g- reduction of reject rates · CPC title