镧－烷基膦酸单烷基酯的制备及其抗磨特性的研究  

Preparation and Anti wear Characteristics of Lanthanum Alkyl Phosphonic Mono Ester

作　　者：陈波水[1] 陈国需[1] 叶毅[1] 董浚修[1] 

机构地区：[1]后勤工程学院油化系

出　　处：《石油化工》1996年第12期821-825,共5页Petrochemical Technology

基　　金：国家自然科学基金

摘　　要：根据萃取化学原理，采用２－乙基己基膦酸单（２－乙基己基）酯（简称ＨＥＭＰ）为萃取剂，从含Ｌａ３＋的水溶液中萃取Ｌａ元素。萃合物镧－异辛基膦酸单酯（简称ＬａＥＭＰ）用红外光谱、１Ｈ和３１Ｐ核磁共振波谱分析，确定了基本结构。采用四球摩擦磨损试验机考查了ＬａＥＭＰ的抗磨性能，并用扫描电子显微镜（ＳＥＭ）、波谱仪（ＷＤＳ）及俄歇电子能谱（ＡＥＳ）方法，研究了ＬａＥＭＰ的抗磨机理。结果表明，ＬａＥＭＰ具有较好的抗磨性能，在摩擦表面生成的含Ｐ和Ｌａ等元素的保护膜以及摩擦亚表面形成的含镧摩擦扩散层。A lanthanum ethylhexyl phosponic mono(2 ethylhexyl)ester(LaEMP) is prepared and its chemical structure characterized.The anti wear capacity of LaEMP is evaluated on a friction tester and the anti wear mechanism investigated with scanning electron microscope(SEM),wave dispersion spectroscope(WDS)and auger electron spectroscopy(AES).Results indicate that LaEMP provides very good anti wear ability,which can be attributed to the formation of a protection film containing elemental phosphrous and lanthanum and on the friction surface,and a diffusion layer of lanthanum on the friction sub surface.

关 键 词：镧化合物 抗磨剂 表面分析 稀土元素 

分 类 号：O614.33[理学—无机化学]