Substrate with protective coating thereon

Details Substrate with protective coating thereon Substrate with protective coating thereon

B - Operations, Transporting

32

B

B32B 15/01 (2006.01)

Patent

CA 2193559

An article is coated with a multilayer coating comprising a nickel layer deposited on the surface of the article, a palladium layer deposited on the nickel layer, a ruthenium layer deposited on the palladium layer, a refractory metal, preferably zirconium, layer deposited on the ruthenium layer, and a refractory metal compound, preferably zirconium nitride, deposited on the refractory metal layer. The coating provides the color of polished brass to the article and also provides abrasion and corrosion protection.

Un article est enduit d'un revêtement multicouches comprenant une couche de nickel formée à la surface de l'article, une couche de palladium formée sur la couche de nickel, une couche de ruthénium formée sur la couche de palladium, une couche d'un métal réfractaire , de préférence le zirconium, formée sur le ruthénium et un composé d'un métal réfractaire, de préférence le nitrure de zirconium formé sur la couche de métal réfractaire. Le revêtement confère la couleur du laiton poli à l'article et le protège de l'abrasion et de la corrosion.

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