Glass articles with infrared reflectivity and methods for making the same

• US 9,975,805 B2
• Filed: 09/26/2016
• Issued: 05/22/2018
• Est. Priority Date: 10/28/2011
• Status: Active Grant

• Current Assignee: Corning Incorporated
• Original Assignee: Corning Incorporated
• Inventors: Borrelli, Nicholas Francis, Koch, III, Karl William, Schroeder, III, Joseph Francis
• Primary Examiner(s): Sample, David
• Assistant Examiner(s): Gugliotta, Nicole T
• Application Number:
  US15/276,097
• Publication Number:
  US 20170008796A1
• Time in Patent Office: 603 Days
• Field of Search: None
• CPC Class Codes: C03C 15/00 Surface treatment of glass, not in the form of fibres or filaments, by etching etching or surface-brightening compositions, in general C09K13/00
• CPC Class Codes: C03C 21/002 to perform ion-exchange between alkali ions C03C21/005 takes precedence
• CPC Class Codes: C03C 21/005 to introduce in the glass such metals or metallic ions as Ag, Cu
• CPC Class Codes: C03C 23/007 by thermal treatment
• CPC Class Codes: Y10T 428/24975 No layer or component greater than 5 mils thick
• CPC Class Codes: Y10T 428/265 1 mil or less

Abstract

Glass articles with infrared reflectivity and methods for making the same are disclosed herein. In one embodiment, glass article having infrared reflectivity includes a first surface, a second surface and a body extending between the first and second surfaces. A plurality of discrete layers of metallic silver are formed in the body creating at least one optical cavity in the body. Each discrete layer may have a thickness T such that 100 nm≤T≤250 nm and may be spaced apart from adjacent layers of metallic silver by a spacing S≤500. The glass article reflects at least a portion of electromagnetic radiation incident on the glass article having a wavelength from 800 nm to 2500 nm and transmits at least a portion of electromagnetic radiation incident on the glass article having a wavelength from 390 nm to 750 nm.

Claims

1. A glass article, comprising:

a first glass surface;

a second glass surface;

a glass body between the first and second glass surfaces, wherein the glass body is continuous with the first glass surface and the second glass surface such that the glass article is a single piece of glass; and

a plurality of metallic silver layers within the glass body and spaced apart from one another within the glass body.

2. The glass article of claim 1, wherein the layers of metallic silver are spaced apart such that at least one optical cavity is formed therebetween, where the optical cavity acts as a Fabry-Perot resonator that produces high specular reflection of specific wavelengths of electromagnetic radiation incident on the glass article.

3. The glass article of claim 1, wherein the glass article reflects at least a portion of electromagnetic radiation incident on the glass article having a wavelength from 800 nm to 2500 nm and transmits at least a portion of electromagnetic radiation incident on the glass article having a wavelength from 390 nm to 750 nm.

4. The glass article of claim 1, wherein the glass article comprises a glass composition that is ion-exchangeable.

5. The glass article of claim 1, wherein the glass article includes a layer of compressive stress which extends into the body of the glass article.

6. The glass article of claim 5, wherein the layer of compressive stress extends into the body of the glass article to a depth of layer of up to about 60 μ

m.

7. The glass article of claim 5, wherein the compressive stress has a magnitude of greater than 200 MPa.

8. The glass article of claim 1, wherein the glass article has curvature.

9. The glass article of claim 8, wherein the curvature is along length dimensions of the glass article.

10. The glass article of claim 8, wherein the curvature is along width dimensions of the glass article.

11. The glass article of claim 8, wherein the glass article is glazing.

12. The glass article of claim 11, wherein the glazing is a window, windshield, and/or roof panel.

13. The glass article of claim 11, wherein the glazing is automobile glazing.

14. The glass article of claim 1, wherein the first glass surface and the second glass surface are parallel with one another.

15. The glass article of claim 14, wherein the glass article is glazing.

16. The glass article of claim 15, wherein the glazing is a window.

17. The glass article of claim 16, wherein the window is a building window.

18. A glass article, comprising first and second glass surfaces and a glass body therebetween, wherein the glass body is a single piece of glass comprising metallic silver layers spaced apart from one another within the glass body.