▎ 摘　　要

In order to obtain a composite coating with excellent performance, Ni-Co-graphene composite coating was prepared by adding graphene with different particle sizes to the plating solution and using composite electrodeposition technology. The surface morphology, phase structure, microhardness, wear resistance and corrosion resistance of the coating were characterized and compared with the Ni-Co alloy. The results show that graphene is well embedded in the coating, and the presence of graphene does not change the crystal structure of the substrate. The addition of graphene increases the microhardness (HV) of the composite coating up to 8050 MPa. The friction coefficient of composite coating is reduced, and the area of adhesive wear is reduced to some extent. The self-corrosion current density of composite coating is 1.0905x10(-5) A/cm(2), which is lower than that of Ni-Co alloy coating 1.8298x10(-5) A/cm(2). The addition of graphene improves the hardness, wear resistance and corrosion resistance of composite coatings.