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将硒粉、铌粉和二氧化铈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,结果表明:NbSe2/CeNbO4纳米复合材料为NbSe2和CeNbO4的混合晶相;其中NbSe2为径向尺寸3μm、厚度200 nm的纳米六方片,表面光滑;CeNbO4为80 nm的纳米小球,颗粒大小均匀。采用UMT-2摩擦磨损试验机对其摩擦性能进行测试,结果表明:NbSe2/CeNbO4纳米复合材料和纯的NbSe2作为润滑油添加剂与纯基础油相比均具有良好的抗载润滑减摩性能,且NbSe2/CeNbO4摩擦学性能要优于纯的NbSe2,并对其摩擦机理进行了解释。
The selenium powder, niobium powder and cerium oxide powder are mixed according to a certain mass ratio, and the NbSe2 / CeNbO4 nanocomposite is synthesized by in-situ solid-state reaction at 800 DEG C. The phase composition and the morphology of the samples were analyzed by X-ray powder diffraction and scanning electron microscopy respectively. The results showed that the NbSe2 / CeNbO4 nanocomposites were mixed phases of NbSe2 and CeNbO4, NbSe2 was 3μm in radial size, The nano-hexagonal plate with a thickness of 200 nm has a smooth surface; the nano-sphere with a CeNbO4 of 80 nm has a uniform particle size. The tribological properties of the composites were tested by UMT-2 friction and wear tester. The results show that NbSe2 / CeNbO4 nanocomposites and pure NbSe2 have good load-bearing and friction-reducing properties compared with the pure base oil The tribological properties of NbSe2 / CeNbO4 are better than that of pure NbSe2, and the tribological mechanism is explained.