两种无灰型含磷/硫润滑添加剂在菜籽油中的摩擦学性能及膜分析  

Tribological Behaviors and Film Analysis of Two Ashless Phosphorus/Sulfur-Containing Additives in Rapeseed Oil

作　　者：马海兵[1] 李晶[1] 於薏[1] 左光之[1] 任天辉[1] 

机构地区：[1]上海交通大学化学化工学院,上海200240

出　　处：《物理化学学报》2008年第5期799-804,共6页Acta Physico-Chimica Sinica

基　　金：国家重点基础研究发展规划项目(2007CB607600);国家自然科学基金(20472051);中科院北京高能物理所同步辐射实验室基金(BSRFSR06033)资助

摘　　要：以合成的两种无灰型含磷/硫化合物为润滑添加剂,以可生物降解的菜籽油作为基础油,用四球机研究了体系的抗磨减摩性能,以X射线光电子能谱(XPS)和X射线吸收精细结构光谱(XANES)对所形成的摩擦膜和热膜进行了表面分析,并初步探讨了其润滑机理.摩擦学研究结果表明,两种含磷/硫化合物作为菜籽油的润滑添加剂时,具有良好的抗磨减摩性能.XPS和XANES分析结果显示,摩擦膜和热膜主要由吸附层和反应层组成;在表面膜中,磷主要以磷酸盐或焦磷酸盐等形式存在,而硫主要以硫酸盐的形式存在.研究结果还表明,摩擦热在两种不同添加剂的摩擦膜形成过程中发挥着不同的作用.Two synthetical ashless phosphorus/sulfur-containing compouds were used as additives in biodegradable rapeseed oil （RSO）. Their anti-wear and friction-reduction performances as lubricating oil additives were evaluated using four-ball tester. The chemistry of their tribofilms and thermal films was analyzed with X-ray photoelectron spectroscopy （XPS） and X-ray absorption near-edge spectroscopy （XANES）, The results showed that the two phosphorus/sulfur-containing compounds possessed rather good anti-wear properties and friction-reducing performances. According to the XPS and XANES analytic results, the tribofilms and thermal films generated from the additives were mainly composed of adsorbed-film and reaction film, in which phosphate and pyrophosphate were main existence form of P, FeSO4 was the main existence form of S. The results also showed that tribo-heat played different roles in the formation of tribofilms generated from the two different additives.

关 键 词：生物降解润滑油 XPS XANES 摩擦膜 热膜 润滑机理 

分 类 号：TH117.22[机械工程—机械设计及理论]