碳基薄膜具有独特的物理、机械及摩擦学性能，是从微观尺度的微机电系统到宏观尺度的机械部件都具有广泛应用的固体润滑材料，在学术界和工业界均引起了极大的关注。由于碳基薄膜结构的多样性及摩擦磨损行为对测试条件和环境气氛的敏感性制约了对其摩擦机理的认识，极大的限制了其实际应用。本项目在理论分析和前期研究成果的基础上，从碳基薄膜的摩擦接触面间微纳尺度三体磨损的角度出发，关注不同摩擦条件下滑动界面处犁沟、界面剪切、重杂化、减摩摩擦层的形成及结构，归纳出影响薄膜摩擦学行为的共性和个性因素，揭示碳基薄膜减摩摩擦层的物理化学特质与超低摩擦之间的关系。特别是自配滑动下超润滑碳基薄膜滑动界面处低剪切非化学计量比碳氢减摩摩擦层的物理化学结构及与环境气氛之间的化学互作用（吸附、钝化和解吸等），提出显著减小摩擦以及构筑超润滑碳基薄膜的途径和实现超润滑的方案，为超润滑碳基薄膜的应用提供重要的理论支持。

Carbon-based films have attracted substantial scientific and technological attention in recent years because they has unique physical, mechanical, and tribological properties which make it an outstanding as a solid lubricant for a variety of industrial applicationsn from micro electro mechanical system (MEMS) to macro machines mechanical components. Due to the structural diversity, test conditions and environmental sensitivity of friction and wear behavior of the carbon-based films, it restrict the people to understanding of the tribological mechanism, so greatly limits its application. Base on theoretical analysis and our previous research results, the research project, from the point of view of micro/nano scale third body of carbon-based film between the sliding contact interface. Focus on the interfacial processes occurring throughout sliding such as plowing, interface shearing, rehybridization，the formation and structure of antifriction tribolayer, summarize the general and individual factors that influence the tribological behavior of the carbon-based films. Reveal the relationship between the physical and chemical characteristics of antifriction tribolayer and ultralow friction. Especially the typical physical and chemical structure of the low-shear non-stoichiometric hydrocarbon antifriction tribolayer and chemical interaction with the environment atmosphere (adsorption, passivation, desorption, etc.) of the superlow frictional carbon-base films under the self-mated sliding. Put forward the schemes to construction of superlow frictional surface, significantly reduce the friction coefficient and the way to realize superlow friction. It provides an important theoretical support for practical application of super lubricating carbon-based thin film.