Quantum Beam Analysis for Tribology Study（面向摩擦学研究的量子束分析）
Professor Tomoko Hirayama(Kyoto University，Japan)平山朋子 教授（京都大学工学部机械理工专业）
2025 年 3 月 10 日 (星期一 ) 上午 10:00
Boundary lubrication is one of the most interesting topics in the field of tribology, and a lot of studies have been conducted from the past for understanding the characteristics of boundary lubrication layers. General boundary lubrication layers are formed by the adsorption of additives mixed into lubricant, and then the tribological performances are drastically improved in many cases. However, there is still room for discussion on the ‘actual’ structure of adsorbed additive layer at the solid-liquid interface. This talk will introduce the recent approaches using neutron reflectometry (NR) and frequency-modulation atomic force microscope (FM-AFM) for in-situ structural analysis of adsorbed additive layer, especially focsing on a fatty acid as a typical oiliness additive and developed additives for advanced engine oil, and the relationship between the structure and friction coefficient measured by colloidal-probe AFM under boundary lubricated condition will be discussed1,2). In addition, “mechano-operando” analysis with NR and its results will be introduced as a new trial.（边界润滑是摩擦学领域中最有趣的话题之一，过去已经开展了大量研究，以了解边界润滑层的特性。通常，边界润滑层是通过润滑油中添加的添加剂吸附形成的，许多情况下，其摩擦学性能会显著提高。然而，关于固体-液体界面处吸附添加剂层的“实际”结构，仍有讨论的空间。本次报告将介绍最近使用中子反射（Neutron Reflectometry, NR）和频率调制原子力显微镜（Frequency-Modulation Atomic Force Microscope, FM-AFM）进行吸附添加剂层原位结构分析的方法。特别关注脂肪酸这种典型的油性添加剂，以及为先进发动机油开发的添加剂。此外，还将讨论在边界润滑条件下，通过胶体探针原子力显微镜（Colloidal-Probe AFM）测量的摩擦系数与结构之间的关系。此外，报告还将介绍“机械操作原位”（Mechano-Operando）分析与中子反射结合的最新尝试及其结果。）
撰写：范雪
排版：陈仕发
一审一校：任露洋
二审二校：马将
三审三校：郑纯
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