氟化镧纳米粒子的原位合成及润滑机理

In-situ Synthesis and Lubricating Mechanism of LaF_3 Nanoparticles

在Tween-80/n-C10H21OH/H2O体系层状液晶中原位合成出粒径为5-25 nm氟化镧纳米粒子,用四球摩擦磨损实验机考察了氟化镧纳米粒子在Tween-80/n-C10H21OH/H2O体系层状液晶中的润滑性能,并用X-射线光电子能谱对其摩擦化学作用机理进行了研究。结果表明,氟化镧纳米粒子能提高Tween-80/n-C10H21OH/H2O体系层状液晶的润滑性能,其在摩擦过程中,发生了摩擦化学反应,在摩擦表面生成了化学反应膜。

The LaF3 nanoparticles were prepared in Tween-80/n-C10H21OH/H2O lamellar liquid crystal. The size of LaF3 nanoparticles was about 5-25 nm. The friction and wear behaviors of LaF3 nanoparticles as an additive in lamellar liquid crystal were studied by wear and tear test machine. It had been found that the LaF3 nanoparticles could improve the lubrication performance of lamellar liquid crystal. The XPS analysis of the worn surfaces indicated that tribochemically reaction film was generated during the friction process.