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.
出处
《润滑与密封》
CAS
CSCD
北大核心
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)
关键词
摩擦学性能
磷酸镧纳米粒子
铝合金
tribological properties
LaPO4 nanoparticles
aluminum alloy
