Improved mechanical properties of Cu–Sn–Zn–TiO2 coatings

Abstract

This study applied the pulse electrodeposition and duplex electrodeposition techniques to improve the mechanical properties of Cu–Sn–Zn–TiO2 nanocomposite coatings. The phase constituents and surface morphologies of prepared coatings were characterized. The cross-sectional information was recorded. The mechanical properties were determined by microhardness and wear tests. All the prepared coatings presented a nodular surface. Both the addition of TiO2 particles and nickel inner layer refined the coating surface. The pulse electrodeposition led to increased microhardness, while the addition of nickel inner layer further increased the mechanical performance. The best mechanical performance was achieved for the duplex Cu–Sn–Zn–TiO2/Ni nanocomposite coating prepared via pulse electrodeposition.