中文摘要：

在蓖麻油（CO）分子中引入硼，制备了一种新型环境友好润滑添加剂（BcO），并利用红外光谱对其主要官能团进行表征。通过四球和SRV摩擦磨损试验机考察了以菜籽油为基础油、以BCO为添加剂时对钢．钢摩擦副和钢一镁摩擦副抗磨减摩性能的影响；用扫描电子显微镜观察分析钢球磨斑表面的形貌，同时通过对镁合金磨痕进行x射线光电子能谱分析，探讨了BCO添加剂的抗磨减摩机理。结果表明，BCO添加剂在菜籽油中具有优良的极压抗磨和减摩性能；其润滑作用机理是由于长链蓖麻油分子的载体作用、硼的缺电子性以及二者的协同作用与摩擦金属表面形成了一层高强度的吸附膜和／或摩擦化学反应膜。

英文摘要：

A new environmental friendly lube additive, boron modified castor oil （BCO） was prepared and characterized by FT-IR. Using rapeseed oil as lube base oil, the effect of BCO additive on the anti-wear and friction reducing behavior of steel-steel and steel-magnesium alloy friction pairs were investigated with a four-ball testing machine and an Optimal SRV friction and wear tester respectively. The morphologies of the worn surfaces were analyzed by means of scanning electron microscopy （SEM）. The worn surfaces of the magnesium alloy block were analyzed by means of X-ray photoelectron spectroscopy （XPS） and the lubricating mechanism of BCO additive was discussed. Results showed that rapeseed oil with BCO additive exhibited excellent extreme pressure anti-wear and friction reducing performance. Its lubrication mechanism could be inferred to the forming of a high strength adsorption film and/or tribochemistry reaction film on the worn surfaces of the metal friction pair, due to the carrier function of the long chain castor oil molecule, the electron-deficiency of boron molecule and their synergisms.