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将Se粉、Nb粉和CeO2粉末按一定质量比混合,通过在800℃下原位固相反应合成出NbSe2/CeNbO4纳米复合材料。分别以NbSe2/CeNbO4纳米复合材料为固体润滑相,Cu为基体相,通过粉末冶金的方法制备NbSe2/CeNbO4-Cu基复合材料。使用X射线粉末衍射仪和扫描电子显微镜分别分析了样品中的相成分和微观形貌,并用摩擦磨损试验机对其摩擦磨损性能进行评价。结果表明:NbSe2/CeNbO4纳米复合材料为NbSe2和CeNbO4的混合晶相,NbSe2/CeNbO4-Cu基复合材料和NbSe2-Cu基复合材料均具有良好的抗磨减摩性能,且添加NbSe2/CeNbO4的Cu基复合材料摩擦学性能要优于添加NbSe2的Cu基复合材料,并对其摩擦机理进行了解释。
The Se powder, Nb powder and CeO2 powder are mixed in a certain mass ratio, and the NbSe2 / CeNbO4 nanocomposite is synthesized by in-situ solid-state reaction at 800 ° C. NbSe2 / CeNbO4-Cu matrix composites were prepared by powder metallurgy with NbSe2 / CeNbO4 nanocomposites as the solid lubricant phase and Cu as the matrix phase respectively. The phase composition and microstructure of the samples were analyzed by X-ray powder diffraction and scanning electron microscopy, respectively. The tribological properties of the samples were evaluated by friction and wear tester. The results show that the NbSe2 / CeNbO4 nanocomposites are mixed phases of NbSe2 and CeNbO4, NbSe2 / CeNbO4-Cu-based composites and NbSe2-Cu-based composites have good antiwear and friction reducing properties, The tribological properties of matrix composites are better than that of Nb-based composites, and the friction mechanism is explained.