A graphene (Gr)/Ti6Al4V composite coating was prepared by laser cladding, and the microstructure and the properties were studied. The results showed that an in situ synthesis between Gr and Ti occurred and TiC was formed. The TiC was homogeneously distributed. The α’ acicular martensite was formed at the bottom of the coating during the rapid solidification process, and a good metallurgical bond was formed between the coating and substrate. The TiC and the self-lubrication of Gr improved the wear resistance of coating. And the wear mechanism changed from more serious abrasive and adhesive wear to a mild wear with fine scratches. Meanwhile, severe oxidative wear occurred in the coating and substrate under high-temperature friction and wear. The corrosion resistance of the coating was also improved. The corrosion morphology changed from denudation and pitting to local pitting. The Gr and TiC in the coating effectively preventeds the corrosion.

通过激光熔覆制备了石墨烯（Gr）/ Ti6Al4V复合涂层，研究了其组织和性能。结果表明，一个在 原地在Gr和Ti之间发生合成，形成TiC。TiC均匀分布。在快速凝固过程中，α'针状马氏体形成在涂层的底部，并且在涂层和基材之间形成了良好的冶金结合。TiC和Gr的自润滑改善了涂层的耐磨性。磨损机理从更严重的磨料和粘合剂磨损变为轻度磨损和轻微划痕。同时，在高温摩擦和磨损下，涂层和基材中发生严重的氧化磨损。涂层的耐腐蚀性也得到了改善。腐蚀形态从剥蚀和点蚀变为局部点蚀。涂层中的Gr和TiC有效地防止了腐蚀。