采用熔盐法在低密度炭/炭(C/C)坯体内孔表面制备了Mo_2C涂层,然后通过无压熔渗制备了C/C-Cu复合材料,研究了C/C-Cu复合材料的组织结构及载流摩擦磨损性能。结果表明:熔融Cu可自发渗入制备了Mo_2C内涂层的C/C坯体,复合材料中Cu相与C/C坯体形成相互贯穿的连通网络结构,Mo_2C涂层与Cu和热解炭(PyC)间均有良好的界面结合,反应生成Mo_2C过程中的催化石墨化及应力石墨化共同作用使C/C-Cu复合材料中Mo_2C涂层附近PyC的有序度提高。随载荷增大,C/C-Cu复合材料的摩擦系数逐渐降低,体积磨损率增大,而对偶的质量损失逐渐降低;载荷较大时材料磨损表面被摩擦膜覆盖的面积增大,但因粘着磨损摩擦膜的粗糙程度提高。材料磨损过程中还发生了氧化磨损,且载荷增大磨损表面O含量提高。 The Mo_2C coating was prepared on the inner surface of low density carbon / carbon (C / C) blank by molten salt method. Then the C / C-Cu composites were prepared by pressureless infiltration. The effects of C / C-Cu composites The organizational structure and current-carrying friction and wear properties. The results show that the melted Cu spontaneously infiltrated into the C / C blank prepared by Mo 2 C undercoating, and the Cu phase and the C / C blank in the composites formed a continuous network structure. The Mo 2 C coating was in contact with Cu and pyrolytic carbon PyC) had good interfacial bonding. The catalytic graphitization and stress graphitization in the reaction of Mo_2C increased the ordering degree of PyC in the C / C-Cu composite near the Mo_2C coating. With the increase of load, the friction coefficient of C / C-Cu composites decreases gradually, the volumetric wear rate increases, while the dual mass loss decreases gradually. When the load is larger, Adhesive wear Roughness of the friction film increases. Oxidative wear also occurred in the material wear process, and the content of O on the wear surface increased with the increase of load.