The lubricant-surface system is complex in nature and can significantly affect the frictional performance of high-performance transmission systems. The complexity stems from the coupled mechanical and chemical phenomena that occur at the interfacial tooth conjunctions. A combined analytical and precision experimental approach is presented to analyse the salient parameters of the lubricant-surface system. A multiscale procedure comprising topographical measurement, pin-on-disc tribometry, atomic force microscopy in lateral force mode, X-ray photo-electron spectroscopy and continuum contact mechanics analysis under mixed non-Newtonian thermo-elastohydrodynamics is used to describe the formation of a tribo-film, as well as wear and frictional characteristics of the lubricant-surface system. The contribution of chemisorbed and physisorbed bonded tribo-film on the boundary coefficient of friction is ascertained at different physical scales. Therefore, the paper presents a novel multiscale analysis, promoting improved understanding of the complex interactions between mechanisms of friction, wear and surface chemistry.

中文翻译：

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轻度磨损下高性能润滑系统的润滑表面系统中的多级摩擦。

润滑表面系统本质上很复杂，会严重影响高性能传动系统的摩擦性能。复杂性源于界面齿连接处发生的机械和化学耦合现象。提出了一种结合分析和精密实验的方法来分析润滑剂表面系统的突出参数。多尺度程序包括形貌测量，圆盘摩擦学，横向力模式下的原子力显微镜，X射线光电子能谱和混合非牛顿热弹流体力学下的连续接触力学分析，用于描述形成摩擦膜以及润滑剂表面系统的磨损和摩擦特性。在不同的物理尺度下，可以确定化学吸附和物理吸附的摩擦膜对摩擦边界系数的贡献。因此，本文提出了一种新颖的多尺度分析方法，增进了人们对摩擦，磨损和表面化学机理之间复杂相互作用的理解。