Spectroscopic Investigation of the Chemical Changes in Bulk Lubricant and Lubricant Solid Interface

散装润滑剂和润滑剂固体界面化学变化的光谱研究

• 批准号: 8712629
• 负责人: Erdogan Gulari
• 金额: $ 26.56万
• 依托单位: Regents of the University of Michigan - Ann Arbor
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1987
• 资助国家: 美国
• 起止时间: 1987-10-15 至 1991-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8712629&HistoricalAwards=false
• 关键词: Spectroscopic; Investigation; Chemical; Changes; Bulk

Knowledge of the physical and chemical changes occuring in the bulk lubricant and the solid-lubricant interface is essential in order to control friction and wear. This program will employ spectroscopic techniques to study these physical and chemical chances under realistic conditions. Laser light scattering and vibrational spectroscopy will be used to investigate the micellization and oxidation phenomena in bulk oil,as a function of temperature, wear and anti-oxidation additives and oxygen pressure. The changes occurring at the interface will be followed both under static and dynamic conditions. Under static conditions attenuated total internal reflection IR spectroscopy will be used to monitor the adsorption-desorption, and reaction kinetics of the oil and the additives at the solid-lubricant interface. Analysis of the data will yield rate constants as well as chemical information about the alignment and binding of the lubricant molecules to the solid surface. The oxidation kinetics of the solid surface will be determined from an analysis of the vibrational bands due to the formation of metal oxides. Perhaps the most informative measurements will be obtained under realistic conditions with a diamond slider. Using single reflection FTIR and Raman scattering the chemical condition of the lubricant film and the solid surface will be measured in real time right behind the contact point as a function of load and temperature.

了解发生在环境中的物理和化学变化 本体润滑剂和固体-润滑剂界面， 为了控制摩擦和磨损，这是必不可少的。 这 计划将采用光谱技术来研究这些 现实条件下的物理和化学机会。 激光散射和振动光谱将是 用于研究胶束化和氧化 散装油中的现象，作为温度、磨损和 抗氧化添加剂和氧气压力。 的变化 发生在接口处的事件将在 静态和动态条件。 在静态条件下 衰减全内反射红外光谱将是 用于监测吸附-解吸和反应 在固体润滑剂处的油和添加剂的动力学 接口. 分析数据将得出速率常数 以及关于排列的化学信息， 润滑剂分子与固体表面的结合。的 固体表面的氧化动力学将被确定 从振动带的分析，由于 形成金属氧化物。 也许是最有启发性的 将在实际条件下获得测量结果 用钻石滑块。 使用单反射FTIR和 拉曼散射的化学条件 润滑膜和固体表面将被真实的测量 接触点后的时间作为负载的函数， 温度