基于油润滑条件下的纳米单元表面优化作用机理

依据摩擦化学反应和作用模型的建立，研究了油润滑介质中纳米单元表面优化作用机制，认为纳米粒子油润滑表面优化行为是以下途径共同作用的结果：摩擦副表面短程作用力导致摩擦副近表面纳米粒子在表面富集，使表面润滑层(膜)的厚度增加、强度增大；表面富集的部分纳米粒子在摩擦条件下发生摩擦化学反应，生成新的化学转移膜；纳米粒子在摩擦过程中填平、抛光表面等。

Action Mechanism Optimized Surface by Nanoparticles in Oil Lubricating under Friction

According to tribochemical reaction and modeling of action mechanism ,the action mechanism optimized by nanoparticles in oil lubricating under friction is studied .The surface of a couple material is optimized by the together action of three approach stated as follows: Firstly, the thickness and intensity of lubricating layers or films provided with the action improving tribological properties increase because of enrichment of nanoparticles on the surface or near surface of couple-material arising from short force. Secondly, new lubricating film is built because of tribochemical reaction concerned with nanoparticles enriched in surface under friction and wear. Thirdly, the surface of couple-material is optimized by nanoparticles, for instance machine polishing, filling and leveling up the tiny hole and crackle on surface.