2012•Electroplating & FinishingRequires access

Study on HVOF-deposited WC-CoCr coating as alternative for hard chromium plating

Chunming Deng

Abstract

A WC-CoCr coating was deposited on 300M steel substrate by high velocity oxy-fuel(HVOF) spraying process.The microstructure,microhardness,phase composition,wear resistance,and corrosion resistance of the coating were studied,and the properties of the coating were compared with a electroplated hard chromium coating.The results indicated that the WC-CoCr coating prepared by HVOF has superior wear and corrosion resistance to the hard chromium coating,and can be an alternative to hard chromium coating for anti-wear application.

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Key concepts: Coating, Materials science, Electroplating, Metallurgy, Thermal spraying, Chrome plating, Corrosion, Chromium