Multiscale Friction in Lubricant-Surface Systems for High-Performance Transmissions Under Mild Wear.
Multiscale Friction in Lubricant-Surface Systems for High-Performance Transmissions Under Mild Wear.
复制标题
轻度磨损下高性能变速器的润滑剂表面系统中的多尺度摩擦。
DOI：
10.1007/s11249-018-1032-z
复制
发表时间：
2018
影响因子：
3.2
通讯作者：
Humphrey E
中科院分区：
文献类型：
--
作者：
Humphrey E
润滑剂表面系统本质上很复杂，可以显着影响高性能传动系统的摩擦性能。复杂性源于界面牙齿连接处发生的耦合机械和化学现象。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显着参数。多尺度程序包括形貌测量、销盘摩擦测量、侧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动力学下的连续接触力学分析，用于描述摩擦膜的形成以及润滑剂表面系统的磨损和摩擦特性。在不同的物理尺度上确定了化学吸附和物理吸附粘合摩擦膜对边界摩擦系数的贡献。因此，本文提出了一种新颖的多尺度分析，有助于更好地理解摩擦、磨损和表面化学机制之间的复杂相互作用。
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.