(1. 中南大学 粉末冶金国家重点实验室，长沙 410083；
2. 上海市空间飞行器机构重点实验室，上海 201108)
摘 要: 采用粉末冶金技术制备含石墨与MoS2的空间对接机构用铜基摩擦材料，研究石墨与MoS2的配比(石墨与MoS2的质量比)对材料的显微组织、物理性能和摩擦学性能的影响。结果表明：随着MoS2含量的增加(石墨含量相应地减少)，材料的显微组织逐渐趋向均匀，其密度与表观硬度逐渐增加；当石墨与MoS2的质量比为4:8时，摩擦材料具有较高的摩擦因数、较高的摩擦因数稳定度和较小的磨损量，且大气与低真空中的摩擦因数相差较小；大气与低真空下的对比实验验证了材料具有良好的真空摩擦学性能。
关键字: 石墨；MoS2；粉末冶金；空间对接；摩擦材料
（1. State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China;
2. Shanghai Key Laboratory of Spacecraft Mechanism, Shanghai 201108, China）
Abstract:The effects of proportion of graphite and MoS2 (mass ratio of graphite to MoS2) ingredients on the microstructure, physical and tribological performances of space docking Cu-based friction material made by powder metallurgy technology were investigated. The results indicate that the microstructure becomes more homogeneous, the apparent hardness and density of the material increase with the increase of MoS2 content (graphite content reduces relatively) obviously; when the mass ratio of graphite to MoS2 is 4:8, the material obtains excellent comprehensive properties such as high friction coefficient and stable coefficient of friction coefficient, and good wear-resistance; the contrast experiments in air and low vacuum denote that materials possess excellent tribological performances in vacuum.
Key words: graphite; MoS2; powder metallurgy; space docking; friction material
