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用XPS研究了固体润滑剂,主要是探讨了其失效过程的化学变化。Atkinson等进行了二硫化钼和氟化石墨的研究。 将二硫化钼作成2微米厚的膜在平面-平面接触的试验机上进行试验,摩擦系数达到0.2时停止试验。根据试样的XPS分析结果,观测到钼、硫减少,氧、铁增加,钼、硫都有氧化的现象。钼由Ⅳ价变成Ⅵ价,硫由Ⅱ价变成零价和Ⅵ价。由钼的化学位移与它的化学结合状态可以认为,二硫化钼的失效是由于氧化的缘故。
Using XPS to study the solid lubricant, the chemical change of the failure process is mainly discussed. Atkinson et al conducted a study of molybdenum disulfide and graphite fluoride. The molybdenum disulfide was formed into a 2-micron thick film on a plane-plane contact test machine and the test was stopped when the friction coefficient reached 0.2. According to the XPS analysis results of the sample, molybdenum, sulfur reduction, oxygen, iron increase, molybdenum, sulfur oxidation were observed. Molybdenum from Ⅳ price into Ⅵ price, sulfur from the price of Ⅱ into zero and Ⅵ price. The chemical shift of molybdenum from its chemically bonded state suggests that the failure of molybdenum disulfide is due to oxidation.