Heat treatable coated article with tungsten-doped zirconium based layer(s) in coating

Patent metadata

Field	Value
Publication number	US-9751800-B2
Application number	US-201313760239-A
Country	US
Kind code	B2
Filing date	Feb 6, 2013
Priority date	Feb 6, 2013
Publication date	Sep 5, 2017
Grant date	Sep 5, 2017

Abstract

In certain example embodiments, a coated article includes a tungsten-doped zirconium based layer before heat treatment (HT). The coated article is heat treated sufficiently to cause the tungsten-doped zirconium oxide and/or nitride based layer to result in a tungsten-doped zirconium oxide based layer that is scratch resistant and/or chemically durable. The doping of the layer with tungsten has been found to improve scratch resistance.

First claim

The invention claimed is:

1. A method of making a heat treated coated article, the method comprising:
having a coated article including a coating supported by a glass substrate, the coating comprising a tungsten-doped layer comprising an oxide and/or nitride of zirconium; and
thermally tempering the coated article, including the glass substrate and the tungsten-doped layer comprising an oxide and/or nitride of zirconium, so that after the tempering a layer comprising tungsten-doped zirconium oxide is provided on the glass substrate.

2. The method of claim 1 , wherein there is more zirconium than tungsten in each of (i) the tungsten-doped layer comprising an oxide and/or nitride of zirconium, and (ii) the layer comprising tungsten-doped zirconium oxide.

3. The method of claim 1 , wherein a metal content of the layer comprising tungsten-doped zirconium oxide is from about 2-40% tungsten.

4. The method of claim 1 , wherein a metal content of the layer comprising tungsten-doped zirconium oxide is from about 5-30% tungsten.

5. The method of claim 1 , wherein a metal content of the layer comprising tungsten-doped zirconium oxide is from about 51-99% zirconium.

6. The method of claim 1 , wherein a metal content of the layer comprising tungsten-doped zirconium oxide is from about 70-95% zirconium.

7. The method of claim 1 , wherein the layer comprising tungsten-doped zirconium oxide includes W-doped Zr x O y where y/x is from about 1.2 to 2.5.

8. The method of claim 7 , wherein y/x is from about 1.4 to 2.1.

9. The method of claim 1 , wherein the layer comprising tungsten-doped zirconium oxide further comprises fluorine and/or carbon.

10. The method of claim 1 , wherein prior to said tempering the tungsten-doped layer comprising an oxide and/or nitride of zirconium comprises tungsten-doped zirconium oxide.

11. The method of claim 1 , wherein prior to said tempering the tungsten-doped layer comprising an oxide and/or nitride of zirconium comprises tungsten-doped zirconium oxynitride.

12. The method of claim 1 , wherein prior to said tempering the tungsten-doped layer comprising an oxide and/or nitride of zirconium comprises tungsten-doped zirconium nitride.

13. The method of claim 1 , wherein prior to the tempering, the coating further comprises a layer comprising diamond-like carbon located on the glass substrate over at least the tungsten-doped layer comprising an oxide and/or nitride of zirconium.

14. The method of claim 1 , wherein prior to and/or after the tempering, the coating further comprises a dielectric layer between the glass substrate and the tungsten-doped layer comprising an oxide and/or nitride of zirconium.

15. The method of claim 1 , wherein the layer comprising tungsten-doped zirconium oxide comprises a nanocrystalline cubic lattice structure.

16. The method of claim 1 , wherein the layer comprising tungsten-doped zirconium oxide is an outermost layer of the coating following tempering.

17. The method of claim 1 , wherein the tempered coated article has a visible transmission of at least 50%.

18. A method of making a heat treated coated article, the method comprising:
having a coated article including a coating supported by a glass substrate, the coating comprising a tungsten-doped layer comprising an oxide and/or nitride of zirconium; and
heat treating the coated article, including the glass substrate and the tungsten-doped layer comprising an oxide and/or nitride of zirconium, so that after the heat treating a layer comprising tungsten-doped zirconium oxide is provided on the glass substrate.

19. The method of claim 18 , wherein there is less tungsten than zirconium in at least one of (i) the tungsten-doped layer comprising an oxide and/or nitride of zirconium, and (ii) the layer comprising tungsten-doped zirconium oxide.

20. The method of claim 18 , wherein a metal content of the layer comprising tungsten-doped zirconium oxide is from about 5-30% tungsten.

21. The method of claim 18 , wherein a metal content of the layer comprising tungsten-doped zirconium oxide is from about 70-95% zirconium.

22. The method of claim 18 , wherein the tungsten-doped layer comprising an oxide and/or nitride of zirconium is sputter-deposited by sputtering both a target comprising Zr and a target comprising W.

23. The method of claim 18 , wherein the tungsten-doped layer comprising an oxide and/or nitride of zirconium is sputter-deposited by sputtering both a target comprising Zr and a target comprising tungsten carbide.

24. The method of claim 18 , wherein prior to said heat treating the tungsten-doped layer comprising an oxide and/or nitride of zirconium comprises tungsten-doped zirconium oxynitride.

25. The method of claim 18 , wherein after the heat treating the coating further comprises a dielectric layer between the glass substrate and the tungsten-doped layer comprising zirconium oxide.

26. The method of claim 18 , wherein the layer comprising tungsten-doped zirconium oxide is an outermost layer of the coating following the heat treating.

27. The method of claim 18 , wherein the coated article after the heat treating has a visible transmission of at least 50%.

28. A method of making a heat treated coated article, the method comprising:
having a coated article including a coating supported by a glass substrate, the coating comprising a layer comprising tungsten and/or tungsten carbide that directly contacts a layer comprising an oxide and/or nitride of zirconium; and
thermally tempering the coated article, including the glass substrate and the layer comprising tungsten and/or tungsten carbide and the layer comprising an oxide and/or nitride of zirconium, so that migration occurs between the layers during said tempering and after the tempering a layer comprising tungsten-doped zirconium oxide is provided on the glass substrate.

Assignees

• Guardian Industries
• Guardian Glass Llc

Inventors

• Wang Jiangping
• Barber Jason

Classifications

• C03C17/3411

  with at least two coatings of inorganic materials (C03C17/36, C03C17/42 take precedence) · CPC title

• C03C17/225

  Nitrides · CPC title

• C03C2218/156

  by magnetron sputtering · CPC title

• C03C17/245 Primary

  by deposition from the vapour phase · CPC title

• C03B27/012

  by heat treatment, e.g. for crystallisation; Heat treatment of glass products before tempering by cooling (C03B27/008, C03B27/016 take precedence) · CPC title