(1. 中南大學(xué) 粉末冶金國家重點(diǎn)實(shí)驗(yàn)室，長沙 410083；
2. 上海市空間飛行器機(jī)構(gòu)重點(diǎn)實(shí)驗(yàn)室，上海 201108)
摘 要: 采用粉末冶金技術(shù)制備含石墨與MoS2的空間對(duì)接機(jī)構(gòu)用銅基摩擦材料，研究石墨與MoS2的配比(石墨與MoS2的質(zhì)量比)對(duì)材料的顯微組織、物理性能和摩擦學(xué)性能的影響。結(jié)果表明：隨著MoS2含量的增加(石墨含量相應(yīng)地減少)，材料的顯微組織逐漸趨向均勻，其密度與表觀硬度逐漸增加；當(dāng)石墨與MoS2的質(zhì)量比為4:8時(shí)，摩擦材料具有較高的摩擦因數(shù)、較高的摩擦因數(shù)穩(wěn)定度和較小的磨損量，且大氣與低真空中的摩擦因數(shù)相差較小；大氣與低真空下的對(duì)比實(shí)驗(yàn)驗(yàn)證了材料具有良好的真空摩擦學(xué)性能。
關(guān)鍵字: 石墨；MoS2；粉末冶金；空間對(duì)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
