文献类型：期刊文献

中文题名：纳米LaF_3在润滑油中的分散稳定性对其摩擦学性能的影响

英文题名：Effect of Dispersivity and Stability of LaF_3 Nanoparticles in Lubricating Oils on Their Tribological Properties

作者：易书理[1];余国贤[1];周晓龙[1];金亚清[1];李承烈[1]

机构：[1]华东理工大学石油加工研究所,上海200237

年份：2006

卷号：32

期号：12

起止页码：1392

中文期刊名：华东理工大学学报（自然科学版）

外文期刊名：Journal of East China University of Science and Technology

收录：CSTPCD;;EI(收录号：20070710428095);Scopus;北大核心:【北大核心2004】；CSCD:【CSCD2011_2012】；

基金：国家重大基础研究前期研究专项项目(2004CCA05400);上海市科研计划项目(0352nm027)

语种：中文

中文关键词：纳米粒子;LaF3;分散稳定性;摩擦学性能

外文关键词：nanoparticles; LaF3; dispersing stability; tribological properties

摘要：用醇水法制备了表面修饰纳米LaF3，通过相转移将纳米LaF3从水相转移到油相（500SN基础油）得到纳米LaF3含量为10．2%（质量百分数）的液体添加荆。采用X-射线衍射仪（XRD）和透射电镜（TEM）分析了纳米LaF3的结构和形貌。用四球机考察了其摩擦学性能及用扫描电子显微镜（SEM）观察了摩斑表面形貌。结果表明：颗粒状纳米LaF3平均粒径为9～17nm，液体添加剂中的纳米粒子在基础油中的分散稳定性和摩擦学性能大大高于用溶剂洗涤法制得的LaF3干粉粒子，纳米粒子在基础油中的分散稳定性对其摩擦学性能影响很大。
Surface-modified LaF3 nanoparticles were synthesized in the mixture solvent of waterethanol and treated by two subsequent handling methods. In one method, a liquid additive containing 10. 2% LaF3 was prepared by the phase transfer method in which LaF3 nanoparticles were moved from the aqueous phase to an oil phase by a solvent washing method. Surface-modified LaF3 nanoparticles were characterized by X-ray diffraction （XRD） and transmission electron microscopy （TEM）. Tribological behaviors of LaF3 nanoparticles in the base oil were examined in a four-ball machine, and the wear scars of steel balls were investigated by scanning electron microscopy （SEM） morphology. Results show that the granular LaF3 nanoparticles have an average size of 9-17 nm. In the base oil dispersing stability and tribological behaviors of LaF3 nanoparticles in the liquid additive are better than that of the LaF3 nanoparticles in powder. And the dispersing stability of LaF3 nanoparticles in the base oil have an important impact on their tribological properties.