(1. 中南大學(xué) 粉末冶金國(guó)家重點(diǎn)實(shí)驗(yàn)室，長(zhǎng)沙 410083；
2. 上海航天技術(shù)研究院 805所，上海 201108)
摘 要: 采用粉末冶金技術(shù)制備了空間對(duì)接用銅基摩擦材料，利用X射線衍射及定量化學(xué)分析技術(shù)對(duì)MoS2在材料燒結(jié)過(guò)程中的變化行為及與其他組元之間的作用進(jìn)行研究。結(jié)果表明，MoS2在加壓燒結(jié)過(guò)程中存在三個(gè)方面的反應(yīng)：在高溫下分解成Mo和S，并造成了S元素的損失；與Cu作用形成了復(fù)雜的銅鉬硫化合物；與Cu反應(yīng)生成了Cu的硫化物，該類化合物具有與MoS2相類似的層狀結(jié)構(gòu)，有一定的潤(rùn)滑作用。MoS2高溫分解后或MoS2與Cu反應(yīng)產(chǎn)生的Mo元素與石墨反應(yīng)形成了Mo的碳化物。另外，雙飛粉的加入不僅與材料中的Mo元素作用形成CaMoO4，并且改變了銅鉬硫化合物、Cu的硫化物以及Mo的碳化物中各元素的摩爾比。
關(guān)鍵字: MoS2；加壓燒結(jié)；摩擦材料；銅基；空間對(duì)接
process of space docking friction material
ZHANG Zhao-sen1, JIN Zhong-xiang2
（1. State Key Laboratory of Powder Metallurgy, Central South University,
Changsha 410083, China;
2. Shanghai Academy of Spaceflight Technology, Institute 805, Shanghai 201108, China）
Abstract:Cu-based friction material was prepared by powder metallurgy (P/M) technique. The transformation of lubricant MoS2 and its action with other component in material during sintering were studied by X-ray diffraction and quantitative chemistry analysis. The results show that there are three reactions of MoS2 in sintering process as follows: a part of MoS2 decomposes into Mo and S at higher temperature, results the loss of S element；another part of MoS2 responds with Cu into an intricate compound made of Cu, Mo and S elements；the surplus part of MoS2 reacts with Cu into copper sulfide during sintering. Mo element reacts with graphite into molybdenum carbide. The heavy calcium carbonate powder added could react with Mo element into CaMoO4, and change the mole ratio of Cu-Mo-S intricate compound, copper sulfide and molybdenum carbide.
Key words: MoS2; pressure sintering; friction material; Cu-based; space docking
