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将硫粉、铌粉和钨粉按一定质量比混合,通过固相反应成功合成出NbS2/WS2纳米复合材料。分别使用X射线衍射仪、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:NbS2/WS2纳米复合材料为WS2和NbS2混合晶相;与纯的NbS2相比,NbS2/WS2纳米复合材料中NbS2形貌与纯的NbS2形貌基本一致,为纳米带和纳米板结构组成,板厚约500 nm,长约几十微米;但与纯的WS2形貌相比,NbS2/WS2纳米复合材料中的WS2由纳米片转变为特殊的由纳米片构成的纳米花状,纳米片厚度约10 nm。并将所合成的NbS2/WS2纳米复合材料添加到液体石蜡基础油中,采用摩擦磨损试验机对其摩擦性能进行测试,实验表明添加了NbS2/WS2纳米复合材料的油样具有优异的抗磨减摩性能;并对其摩擦机理进行了解释。
The sulfur powder, niobium powder and tungsten powder are mixed according to a certain mass ratio, and the NbS2 / WS2 nanocomposite is successfully synthesized through the solid phase reaction. The phase composition and the morphology of the samples were analyzed by X-ray diffraction and scanning electron microscopy respectively. The results show that the NbS2 / WS2 nanocomposites are mixed phases of WS2 and NbS2. Compared with pure NbS2, NbS2 / WS2 nanocomposites have the same NbS2 morphology and pure NbS2 morphology, With a thickness of about 500 nm and a length of about tens of microns. However, compared with the pure WS2 morphology, WS2 in the NbS2 / WS2 nanocomposite is transformed from nanosheets to nanoflakes consisting of nanosheets, The thickness of the film is about 10 nm. And the synthesized NbS2 / WS2 nanocomposites were added to the liquid paraffin base oil, and the friction performance was tested by a friction and wear tester. The experimental results show that the oil samples added with NbS2 / WS2 nanocomposites have excellent wear resistance Friction performance; and its friction mechanism is explained.