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本文中采用滑动磨损试验方法研究了以PbO和WS2为润滑组元的复合材料与440C不锈钢配副在25～600℃温度范围内的摩擦磨损特性.通过X射线衍射仪分析发现复合材料中含有铬的硫化物等高温润滑物质生成.使用扫描电镜和金相显微镜进一步分析了材料摩擦表面形貌.结果表明:在500～600℃范围内,PbWO4、CrxSx+1等各种金属化合物在摩擦表面形成了较完整的润滑膜,产生了自润滑能力,具有优良的减摩耐磨性能.润滑膜材料可向摩擦对偶表面转移,在一定程度上阻止了复合材料与440C不锈钢对摩材料的直接接触,显著降低了材料摩擦系数和磨损率,实现了高温自润滑性能.本文进一步探索了单一润滑组元润滑膜和两种润滑组元润滑膜的承载能力,发现两种固体润滑组元产生的协同润滑效应显著改善了润滑膜的润滑性能.
In this paper, the sliding wear test method was used to study the friction and wear properties of the composite material with 440C stainless steel and PbO and WS2 as the lubrication component in the temperature range of 25 ~ 600 ℃ by X-ray diffraction analysis found that the composite material containing chromium Of sulfide and other high temperature lubricating substances generated by the use of scanning electron microscopy and metallographic microscope further analysis of the friction surface morphology of the material.The results show that: in the range of 500 ~ 600 ℃, PbWO4, CrxSx +1 and other metal compounds formed on the friction surface A more complete lubrication of the film, resulting in self-lubricating ability, with excellent anti-friction wear performance.Rubber material can be frictional dual surface transfer, to a certain extent, to prevent the composite material and 440C stainless steel friction material direct contact, Significantly reducing the friction coefficient and wear rate of the material and realizing the high temperature self-lubricating performance.This paper further explores the bearing capacity of the single lubrication component lubricating film and the lubricating components of two lubricating components, and found that the two solid lubricating components produce synergistic lubrication The effect significantly improves the lubricity of the lubricating film.