Wear resistant coating for sharp-edged tools and the like

C - Chemistry – Metallurgy – 23 – C

Patent

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204/22, 117/75,

C23C 16/02 (2006.01) C23C 16/06 (2006.01) C23C 16/30 (2006.01) C23C 16/32 (2006.01) C23C 28/00 (2006.01) C23C 30/00 (2006.01)

Patent

CA 2011202

ABSTRACT A method is described for improving the erosion and abrasion resistance of a sharp edged metal structure. A base layer of a noble metal is formed on the surface of the body of the structure followed by a chemical vapor deposited outer coating comprising a mixture of tungsten and tungsten carbide. The tungsten carbide is selected from the group consisting of H2C, W3C, and mixtures thereof and is fine grained, non-columnar and having a substantially layered microstructure. Also described is a sharp edged metal structure formed by the method.

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