Multilayer heat processable vacuum coatings with metallic properties
AssigneePPG Industries Ohio, Inc.
InventorsJames J. Finley, Mehran Arbab, Thomas J. Waynar
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Abstract
A temperable coated article with metallic properties is prepared by coating a glass substrate with a metal-containing film such as titanium nitride, which ordinarily oxidizes at high temperature, overcoating with a protective layer of a silicon compound which forms a durable layer and prevents oxidation of the underlying metal-containing film and undercoating with a stabilizing metal-containing layer. The coated article can be tempered without losing its metallic properties to oxidation.
Claims15
A coated article comprising:
- a transparent glass substrate;
- a stabilizing layer on a surface of said glass substrate wherein the stabilizing layer contains a metal selected from the group consisting of silicon and titanium;
- a titanium nitride layer over the stabilizing layer, and
- a protective layer which prevents oxidation of the titanium nitride layer upon heating, the protective layer comprising silicon nitride or silicon oxynitride.
A coated article comprising:
- a transparent glass substrate;
- a stabilizing layer on a surface of said glass substrate wherein the stabilizing layer is a silicon-metal alloy or titanium;
- a titanium nitride film over the stabilizing layer, and
- a protective layer which prevents oxidation of the titanium nitride film upon heating, the protective layer selected from the group consisting of silicon-metal alloy nitride and silicon-metal alloy oxynitride.
A coated article comprising:
- a substrate;
- a functional layer over a surface of the substrate, the functional layer including a film defined as a first film to reduce solar heat load and a stabilizing film defined as a second film to prevent breakdown of the first film;
- a protective film of a nitride or oxynitride of silicon or silicon alloys over the functional layer.
A coated article comprising:
- a glass substrate;
- a stabilizing layer over the surface of said glass substrate wherein the stabilizing layer is a silicon metal alloy, titanium or silicon;
- a titanium nitride film over the stabilizing layer, and
- a protective layer which prevents oxidation of the titanium nitride film upon heating, the protective layer selected from the group consisting of silicon nitride, silicon oxynitride, silicon-metal alloy nitride and silicon-metal alloy oxynitride.
Dependencies are inferred from the claim text.