Article having a coating

B - Operations – Transporting – 32 – B

Patent

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Details

B32B 15/01 (2006.01) C23C 28/00 (2006.01)

Patent

CA 2236156

An article is coated with a multi-layer coating comprising a nickel layer, a refractory metal layer, preferably zirconium layer, a sandwich layer comprised of a plurality of alternating layers of a refractory metal compound and a refractory metal, a refractory metal compound layer on the sandwich layer, and a refractory metal oxide layer or a layer comprised of the reaction products of refractory metal, oxygen and nitrogen. The coating provides the color of polished brass to the article and also provides abrasion protection, corrosion protection, and improved acid resistance.

Article recouvert d'un revêtement multicouche : une couche de nickel; une couche d'un métal réfractaire, de préférence une couche de zirconium; une couche intermédiaire composée de plusieurs couches alternantes d'un composé métallique réfractaire et d'un métal réfractaire; une couche d'un composé métallique réfractaire déposée sur la couche intermédiaire; une couche d'un oxyde de métal réfractaire ou une couche composée des produits de réaction du métal réfractaire, d'oxygène et d'azote. Le revêtement confère à l'article la couleur du laiton poli, le protège contre l'abrasion et la corrosion, et accroît sa résistance aux acides.

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