Claims
- 1. A surface-coated glass article comprised of a glass substrate and a multiple layer coating on a surface of the glass substrate, wherein said coating includes a layer of a transparent dielectric material adjacent the surface of the glass substrate, respective layers nichrome and silver each sputter-coated onto the glass substrate in a nitrogen-containing atmosphere.
- 2. The surface-coated glass article of claim 1, wherein the coating further includes a layer of silicon oxynitride interposed between said layer of dielectric material and said layer of nichrome.
- 3. The surface-coated glass article of claim 2, wherein said silicon oxynitride layer includes an oxygen gradient layer.
- 4. The surface-coated glass article of claim 3, wherein said oxygen gradient layer has an oxygen concentration which decreases between about 0.1 to about 0.6 at. %/Å from one location in the layer to another location at a different depth in the layer.
- 5. The surface-coated glass article of claim 4, wherein said oxygen gradient layer has an oxygen concentration which decreases between about 0.15 to about 0.25 at. %/Å.
- 6. The surface-coated glass article of claim 3, 4 or 5, wherein said oxygen gradient layer has an oxygen concentration which is greater at a location nearer to the glass substrate.
- 7. The surface-coated glass article of claim 1, wherein the dielectric material is at least one selected from the group consisting of TiO2, BiO3, PbO and mixtures thereof.
- 8. The surface-coated glass article as in claim 1, wherein the coating further includes, from the layer of silver outwardly, a second layer of nitrided nichrome, and an outer layer of Si3N4.
- 9. The surface-coated glass article as in claim 1, wherein the coating further includes a layer of Si3N4 interposed between said dielectric material and said layer of nichrome.
- 10. A surface-coated glass article comprised of a glass substrate and a multiple layer coating comprising the following layers formed on a surface of the glass substrate, from the surface outwardly:
(1) a layer of transparent dielectric material; (2) an inner layer of Si3N4 or a layer of silicon oxynitride; (3) a first layer of nitrided nichrome; (4) a layer of silver which is sputter-coated onto the glass substrate in a nitrogen-containing atmosphere; (5) a second layer of nitrided nichrome; and (6) an outer layer of Si3N4.
- 11. The surface-coated glass article of claim 10, wherein the dielectric material is at least one selected from the group consisting of TiO2, BiO3, PbO and mixtures thereof.
- 12. The surface-coated glass article of claim 1 or 10, having a light transmission of at least about 72%.
- 13. The surface-coated glass article of claim 12, having transmitted a*, b* Values of between about −2.0 to −4.0, and between about −0.5 to about 1.5, respectively.
- 14. The surface-coated glass article of claim 1 or 10, wherein the layers have the following thicknesses in Angstroms:
(1) between about 100-200; (2) between about 25-200; (3) between about 2-40; (4) between about 100-200; (5) between about 2-40; and (6) between about 350-600.
- 15. A method of making a surface-coated glass article comprising sputter-coating on a surface of a glass substrate a multiple layer coating comprised of a layer of a transparent dielectric material adjacent the surface of the glass substrate, and respective layers of nichrome and silver which are sputter-coated onto the glass substrate in a nitrogen-containing atmosphere.
- 16. The method of claim 15, wherein said layers of nichrome and silver are each formed by sputter-coating in a gaseous atmosphere comprised of nitrogen and argon, wherein the nitrogen is present in the atmosphere in an amount less than about 25%.
- 17. The method of claim 16, wherein nitrogen is present in an amount between about 15% to about 25%.
- 18. The method of claim 16, wherein the ratio of argon to nitrogen is about 85:15.
- 19. The method of claim 16, which further comprises forming a silicon oxynitride layer between said layer of dielectric material and said layer of nichrome.
- 20. The method of claim 15, wherein said layer of silicon oxynitride is formed by sputter-coating in a gaseous atmosphere comprised of nitrogen, oxygen and argon, wherein the oxygen is present in the atmosphere in an amount between about 5 to about 50%.
- 21. The method of claim 20, wherein oxygen is present in the atmosphere in an amount of about 10%.
- 22. The method of claim 21, wherein the atmosphere comprises about 30% nitrogen, about 10% oxygen and about 60% argon.
- 23. The method of any one of claims 15-22, wherein the sputter-coating of the silicon oxynitride layer includes using an aluminum-containing silicon target.
- 24. The method of claim 23, wherein the target includes about 8% by weight aluminum.
- 25. The method of claim 19 or 20, comprising forming the silicon oxynitride layer so as to include an oxygen gradient layer therein.
- 26. The method of claim 25, wherein said oxygen gradient layer is formed so as to exhibit an oxygen concentration which decreases between about 0.1 to about 0.6 at. %/Å from one location in the layer to another location at a different depth in the layer.
- 27. The method of claim 26, wherein said oxygen gradient layer has an oxygen concentration which decreases between about 0.15 to about 0.25 at. %/Å.
- 28. The surface-coated glass article of claim 25, wherein said oxygen gradient layer has an oxygen concentration which is greater at a location nearer to the glass substrate.
CROSS-REFERENCE TO RELATED APPLICATION
[0001] This application is based on, and claims domestic priority benefits under 35 USC §119(e) from, U.S. Provisional Application No. 60/187,039 filed on Mar. 6, 2000, the entire content of which is expressly incorporated hereinto by reference.
Provisional Applications (1)
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Number |
Date |
Country |
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60187039 |
Mar 2000 |
US |