Cobalt/graphene composite coatings were electrodeposited from the baths containing 0.1–0.5 g/L graphene particles. The effect of graphene particles on structure, morphology, hardness, tribological behavior, and corrosion of the coatings was studied. The results revealed that the pyramidal morphology of the pure Co film became smaller at low graphene concentrations, and changed to needle-shaped at the high concentrations. The presence of graphene in the composite films resulted in the reduction of the cobalt crystallite size and thereby increased the hardness of the coatings. The hardness of Co/0.2 g/L graphene composite coating was 530 Hv that was about 1.6 times higher than the pure Co film. The composite coatings also had better tribological behavior than the steel substrate and the Co film. The lowest volume loss achieved in a composite coating deposited from a bath with 0.2 g/L graphene particles. The most corrosion resistance samples were those electrodeposited from baths with 0.2–0.4 g/L graphene particles. The corrosion current density of these samples in 3.5 wt% NaCl solution was <1 μA/cm².

从含有0.1–0.5 g / L石墨烯颗粒的镀液中电沉积钴/石墨烯复合涂层。研究了石墨烯颗粒对涂层的结构，形态，硬度，摩擦学行为和腐蚀的影响。结果表明，在低石墨烯浓度下，纯Co膜的金字塔形变小，在高浓度下变为针状。复合膜中石墨烯的存在导致钴微晶尺寸的减小，从而增加了涂层的硬度。Co / 0.2 g / L石墨烯复合涂层的硬度为530 Hv，约为纯Co膜的1.6倍。复合涂层还具有比钢基底和Co膜更好的摩擦学性能。在浴中沉积0.2 g / L石墨烯颗粒的复合涂层中实现的最低体积损失。耐蚀性最高的样品是使用0.2–0.4 g / L石墨烯颗粒从镀液中电沉积的样品。这些样品在3.5 wt％NaCl溶液中的腐蚀电流密度<1μA/ cm²。