LaPO_4纳米粒子在铝合金表面的摩擦学性能  

Tribological Properties of LaPO_4 Nanoparticals on Surface of Aluminum Alloy

作　　者：杨汉民[1] 向晖[2] 刘浩文[1] 欧忠文[2] 

机构地区：[1]中南民族大学化学材料与科学学院催化材料科学湖北省暨国家民委-教育部共建重点实验室,湖北武汉430074 [2]解放军后勤工程学院,重庆400016

出　　处：《润滑与密封》2007年第8期74-76,84,共4页Lubrication Engineering

基　　金：国家自然科学基金项目(50572121);湖北省自然科学基金项目(2006ABA369);中南民族大学自然科学基金项目(yzz05013)

摘　　要：在TritonX-100/C10H21OH/H2O微乳液中合成了LaPO4纳米粒子,其粒径约5 nm。用高速环块摩擦磨损试验机考察了LaPO4纳米粒子在铝合金表面的摩擦学性能,并用X射线光电子能谱对其摩擦化学作用机制进行了研究。研究结果表明,LaPO4纳米粒子能提高微乳液的润滑性能,其在摩擦过程中,发生了摩擦化学反应,在摩擦表面生成了由LaPO4、La2O3、A lPO4等组成的化学反应膜。同时,微乳液中的有机分子吸附在铝合金表面构成了有机吸附膜,也起到了减摩抗磨的作用。The nano-particles LaPO4 were preparated in W/O microemulsion of TritonX-100/C10H21 OH/H2O system. The size of LaPO4 nanoparticles is about 5 nm. The friction and wear behaviors of LaPO4 nanoparticles as an additive in W/O microemulsion were studied by the high speed wear and tear test machine. It is found that the LaPO4 nanoparticles in W/O microemulsion has high load carrying capacity and good antiwear properties. The XPS analysis of the worn surfaces indicates that tribochemically reaction film composed of LaPO4, La2O3, AlPO4 is generated during the friction process. The absorption organic film is formed on surface of aluminum alloy. These contributes to improve the tribological properties of LaPO4 nanoparticles and W/O microemulsion.

关 键 词：摩擦学性能 磷酸镧纳米粒子 铝合金 

分 类 号：TH117.22[机械工程—机械设计及理论]