Article having a decorative and protective multilayer coating si

Details Article having a decorative and protective multilayer coating si Article having a decorative and protective multilayer coating si

1995-05-11

1997-05-06

Ngoc, Ngoc-Yen

Stock material or miscellaneous articles

All metal or with adjacent metals

Composite; i.e., plural, adjacent, spatially distinct metal...

428660, 428675, 428680, 428661, 428667, B32B 4504, C25D 326

Patent

active

056269722

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 chrome layer deposited on the nickel-tungsten-boron alloy layer, a refractory metal, preferably zirconium, strike layer deposited on the chrome 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.

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