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US 7,645,487 B2Granted
Heat treatable coated article with zinc-doped zirconium based layer(s) in coating
AssigneeGuardian Industries Corp.
InventorsRudolph Hugo Petrmichl, Douglas Klimesh, Jiangping Wang
Life of this patent
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Abstract
In certain example embodiments, a coated article includes a Zn-doped zirconium based layer before heat treatment (HT). The coated article is heat treated sufficiently to cause the Zn-doped zirconium based layer to transform into a Zn-doped zirconium oxide based layer that is scratch resistant and/or chemically durable. The doping of the layer with Zn has been found to improve scratch resistance and/or corrosion resistance.
Claims20
A method of making a heat treated coated article, the method comprising:
- having a coating supported by a glass substrate, the coating comprising a layer comprising zirconium and zinc;
- and
- thermally tempering the glass substrate with the layer comprising zirconium and zinc thereon, so that after the tempering a layer comprising zinc-doped zirconium oxide is provided on the glass substrate, wherein following tempering the layer comprising zinc-doped zirconium oxide is characterized by (Zn:ZrxOy) where y/x is from about 1.2 to 2.5, and wherein following tempering the layer comprising zinc-doped zirconium oxide is doped with fluorine and/or carbon.
A method of making a coated article, the method comprising:
- having a coating supported by a substrate, the coating comprising a layer comprising zirconium and zinc;
- and
- heat treating the substrate with the layer comprising zirconium and zinc thereon, so that after the tempering a layer comprising oxide of Zn and Zr is provided as an outermost layer of the coated article, wherein following the heat treating the layer comprising zinc-doped zirconium oxide is characterized by (Zn:ZrxOy) where y/x is from about 1.2 to 2.5, and wherein the layer comprising zinc-doped zirconium oxide further comprises from about 1-5% nitrogen prior to the heat treating.
Dependencies are inferred from the claim text.