水介质中硼酸盐-氯化镧的摩擦磨损性能研究  

Friction and Wear Performances of Borates and Lanthanum Chloride in Water

作　　者：陈波水[1] 方建华[1] 王九[1] 李嘉[1] 娄方[1] 

机构地区：[1]解放军后勤工程学院军事油料应用工程系,重庆400016

出　　处：《中国稀土学报》2008年第1期46-49,共4页Journal of the Chinese Society of Rare Earths

基　　金：国家自然科学基金(50275147);教育部"新世纪优秀人才支持计划"(NCET-04-1002)"重庆市高校创新团队建设计划"资助项目

摘　　要：采用四球摩擦磨损试验机考察了硼酸钠、硼酸钾和氯化镧在水介质中的极压、抗磨和减摩性能,采用扫描电镜(SEM)、X射线能谱(EDX)、X射线光电子能谱(XPS)分析了磨斑表面形貌、主要元素的分布特征和化学状态。结果表明,硼酸钠、硼酸钾和氯化镧可一定程度地提高水的极压、抗磨和减摩性能,硼酸钾性能最优,硼酸盐与氯化镧复合后性能进一步改善。硼酸盐与氯化镧复合前摩擦表面擦伤严重,复合后擦伤明显减小,表面形成的La2O3,B2O3,Fe3O4和Fe2O3起到了良好的极压、抗磨和减摩作用。The antiwear and friction-reducing performances of sodium borate, potassium borate and lanthanum chloride in water were evaluated on a four-ball friction tester. The topographies, element distributions and chemical characteristics of the worn surfaces were investigated by Scanning Electron Microscope （SEM）, Energy Dispersion of X-ray （EDX） and X-ray Photoelectron Spectroscope （ XPS ）. The results indicated that sodium borate, potassium borate and lanthanum chloride increase extreme pressure, antiwear and friction-reducing capacities of water to a certain extent, of which potassium borate is the best candidate. Combination of lanthanum chloride with sodium borate and potassium borate respectively can further improves antiwear and friction-reducing capacities. Scratches of worn surfaces lubricated with water containing borates and lanthanum chloride were less severe than those lubricated with water containing borates alone. A tribochemical film mainly composed of oxides of lanthanum, boron and iron reduces friction and wear for water lubricant formulated with both borates and lanthanum chloride.

关 键 词：硼酸盐 氯化镧 水 摩擦 磨损 稀土 

分 类 号：TH117.2[机械工程—机械设计及理论]