纳米铜添加剂与磷酸三甲酚酯复配体系的摩擦学性能

采用四球摩擦磨损试验机考察了表面修饰纳米铜添加剂（简称纳米Cu）和磷酸三甲酚酯（T306）单剂及两者复配体系的摩擦磨损性能，采用X射线光电子能谱仪（XPS）和扫描电子显微镜（SEM）对磨痕表面进行了分析。结果表明，纳米Cu具有良好的润滑性能；当其在一定浓度范围内与T306复合使用时，两者将产生协同抗磨减摩效应；且两者添加的质量分数各为0．5％时，复配体系的抗磨效果最佳。两者复合使用时，会在摩擦表面形成由单质Cu的沉积膜及FeS、SO4^2-和PO4^3-的化学反应膜组成的复合表面膜，产生了协同抗磨减摩作用。

TRIBOLOGICAL BEHAVIORS OF THE COMPLEX OF NANO-Cu ADDITIVE WITH TRICRESYL THOSPHATE

The effects of Cu nano-particles additive (Nano-Cu) and tricresyl phosphate (T306) and their synergetic effects on the tribological performance of lube oil were investigated by using four-ball test machine. The interaction of the two additives was also studied through SEM and XPS analysis. The results showed that the two additives with a certain range of concentration could improve tribological properties of base oil. The synergetic effect of the extreme pressure and antiwear was found in the lube oil containing nano-Cu and T306. When the mass fractions of the two additives in lube oil were (0.5%) respectively, the extreme pressure and antiwear properties of the complex system were best. The composite film made by the aggradation film of Cu and the tribochemical reaction film containing FeS,SO~(2-)_4 and PO~(3-)_4 was found on the rubbing surface, which was the reason of synergetic effect.