边界润滑条件下离子渗氮与极压抗磨添加剂的协同作用

利用球－盘摩擦磨损试验机系统地研究了边界润滑条件下４５＃钢离子渗氮与极压抗磨添加剂硫化烯烃及磷酸三甲酚酯的协同作用，结果表明，离子渗氮与这两种添加剂不仅在提高承载能力方面都有明显的协同作用，而且在减小摩擦磨损方面也都有较好的协同作用，其中以与磷酸三甲酚酯的协同作用效果更好。此外，还利用Ｘ射线光电子能谱仪和俄歇电子能谱仪等表面分析手段分析研究了产生这种协同作用的机理。

The Synergistic Effect between the Surface Treated with lon Nitriding and Extreme Pressure-Antiwear Additives under Boundary Lubrication

It is well known that tribology is an interdisciplinary subject.But most tribologyproblems were investigated usually from the aspect of a single discipline so far,due to theircomplexity,considering the conditions of other aspects to be constant and negligible. Such asituation is an obvious obstacle for solving more deeply the tribological problems. Therefore,theinterdisciplinery researches of tri bology are becoming more and more attractive to all tribologists.The addition of various extreme pressure(EP) and anti-wear(AW)additives in lubricating oilis an important and effective way to reduce friction and wear.The application of chemical heattreatments, such as sulfuration or nitriding on surface of materials is another effective way forimproving the tribological behavior of rubbing pairs. However,the combination of both way is stillless reported.In this paper,the synergistic effect of two additives sulfurized olefin(SO)and tricresylphosphate(TCP) in paraffin oil and ion nitriding treatment of 45# steel on the tribological behaviorwas studied systematically on a ball-on-disc testing machine. Excellent results were obtained for ionnitriding steel matched with EP and AW additives in increasing load bearing capacity and reducingfriction and wear.The mechan ism of this synergistic effect was discussed based on the micro-analysis of surface film by AES and XPS.