The Development of Mixed and Tribochemical Material during the Sliding of Metals

金属滑动过程中混合摩擦化学材料的发展

• 批准号: 9812854
• 负责人: David Rigney
• 金额: $ 25万
• 依托单位: Ohio State University Research Foundation -DO NOT USE
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1998
• 资助国家: 美国
• 起止时间: 1998-09-01 至 2003-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9812854&HistoricalAwards=false
• 关键词: Development; Mixed; Tribochemical; Material; during

The development of deformed material in the subsurface of sliding metals will be followed in detail by a combination of high resolution microscopy and surface analysis, and a non-contact Kelvin probe. The probe measures changes in the metal's electronic work function. Preliminary work has indicated that during sliding contact the work function shows periodic changes. These have tentatively been identified as due to slow build-up of deformed material by formation of nano crystals, transfer films, and agglomeration, followed by sudden removal. If this mechanism can be confirmed and followed in detail it may change the view of wear mechanisms in general. The work will include collaboration with a researcher in Belarus, who developed the Kelvin probe, and with researchers at Los Alamos National Laboratory, who will conduct molecular simulation studies in tandem with the experimental work.

高分辨率显微镜和表面分析相结合，以及非接触式开尔文探头，将详细跟踪滑动金属亚表面变形材料的发展。该探头测量金属的电子功函数的变化。初步工作表明，在滑动接触过程中，功函数呈现周期性变化。初步认为这是由于纳米晶体的形成、转移膜的形成和凝聚，然后突然去除而导致变形物质的缓慢积累。如果这一机制能够得到证实并得到详细的跟踪，它可能会改变人们对磨损机制的总体看法。这项工作将包括与开发开尔文探测器的白俄罗斯研究人员以及洛斯阿拉莫斯国家实验室的研究人员合作，后者将在实验工作的同时进行分子模拟研究。