Wear and electrochemical corrosion behaviors of Cu matrix WC-Co reinforced composite coating prepared by cold spray

The wear and corrosion resistance significantly influence the lifespan of Cu matrix composite (CMC) in practical applications. In this study, Co-coated WC (WC-Co) particles were used as reinforcement phase to prepare CMC coatings by cold spray technique. The effects of reinforcement content and Co layer on the mechanical properties, thermal conductivity, wear resistance, and corrosion resistance were investigated. The results showed that electroless plated WC-Co particles, with a Co layer thickness of ~1 μm, have a higher deposition efficiency (>120 %) than bare WC (