Electrodeposited Ni-Co alloy-particle composite coatings: A comprehensive review

Electrodeposited composite and nanocomposite layers have attracted considerable attention as engineering coatings, due to their favourable tribological properties and corrosion resistance. NiCo alloy matrix composite coatings are particularly significant due to their extensive and developing industrial applications. Ceramic nanoparticles are commonly incorporated into the NiCo alloy matrix to further improve their properties, opening new windows for industrial applications. This review aims to comprehensively assess the influence of operating parameters (including the type of current control, plating bath conditions, particle loading and size) on the deposit properties. Developments in this field are summarized. Fundamental and technological aspects requiring further R & D are identified. [Display omitted] •A concise overview of NiCo alloy electrodeposits and their uses is provided.•The influence of operating conditions on properties of deposits is stressed.•The effects of included particles on deposit characteristics is comprehensively treated.•The importance of particle size on deposit properties is highlighted.•The role of post heat treatment on NiCo based composite coatings is discussed.