Article having a decorative and protective multilayer coating simulating brass
AssigneeBaldwin Hardware Corporation
InventorsStephen R. Moysan, III, Rolin W. Sugg
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Abstract
An article is coated with a multilayer coating comprising a nickel layer deposited on the surface of the article, a nickel-tungsten-boron alloy layer deposited on the nickel layer, a refractory metal, preferably zirconium, strike layer deposited on the nickel-tungsten-boron alloy layer, and a refractory metal compound, preferably zirconium nitride, deposited on the refractory metal strike layer. The coating provides the color of polished brass to the article and also provides abrasion and corrosion protection.
Claims39
An article comprising a metallic substrate having on at least a portion of its surface a multi-layer coating simulating brass comprising:
- layer comprised of nickel;
- metallic layer comprised of substantially amorphous nickel-tungsten-boron alloy containing at least about 0.05 weight percent boron;
- layer comprised of zirconium or titanium;
- and
- a top layer comprised of zirconium compound or titanium compound.
An article comprising a metallic substrate having on at least a portion of its surface a multi-layered coating having a brass color comprising a first layer comprised of nickel;
- a second metallic layer on at least a portion of said first layer comprised of substantially amorphous nickel-tungsten-boron alloy containing at least about 0.05 weight percent boron;
- a third layer on at least a portion of said second layer comprised of zirconium;
- and
- a top layer on at least a portion of said third layer comprised of a zirconium compound.
An article comprising a metallic substrate having on at least a portion of its surface a multi-layer coating comprising:
- layer comprised of nickel;
- metallic layer comprised of substantially amorphous nickel-tungsten-boron alloy containing at least about 0.05 weight percent boron;
- layer comprised of zirconium or titanium;
- and
- a top layer comprised of zirconium compound or titanium compound.
Dependencies are inferred from the claim text.