纳米线NbSe_2的制备及作润滑油添加剂的摩擦学研究

Preparation and Tribological Properties Research of NbSe_2 Nanowires as Additive in Lubricating Oil

通过固相反应法合成了一维二硒化铌纳米材料,用X射线衍射(XRD)仪和透射电子显微镜(TEM)表征了该一维纳米材料的形貌特征。将二硒化铌纳米线按不同质量分数配比加入润滑油,采用UMT-2型微摩擦磨损试验机评价其摩擦学性能;用扫描电子显微镜(SEM)观察了磨痕表面形貌;探讨了含NbSe2纳米材料润滑油的减摩抗磨机理。结果表明,含有NbSe2添加剂的润滑油可有效减小摩擦系数;特别是高载高速时,随着NbSe2质量分数的增加,摩擦系数数减小,磨损量降低且提高了润滑油的承载能力。探讨后发现主要是由其独特的闭合结构、润滑膜的形成、纳米材料的填充自修复作用机制共同作用的效果。

One dimensional nanostructure NbSe2 was synthesized by a solid-phase reaction method.And the micrographite was characterized by XRD and TEM.Adding different mass fraction ratios of NbSe2 to the lubricant,their tribological properties were evaluated using UMT-2 micro-tribometer.The worn surface morphologies were observed by SEM.And the lubricant tribological mechanism with NbSe2 adding was explored.The results show that lubricants containing the NbSe2 additives can effectively reduce the friction coefficient,especially under high load and high speed conditions.As NbSe2 increases,the friction coefficient decreases,the wear decreases and the carrying capacity of lubricating oil is improved.It is found that the effects are mainly produced by the unique closed structure,the lubricant film formation and nano-materials self-repair together.