Understanding the Frictional Properties of Boundary Films

了解边界膜的摩擦特性

基本信息

批准号：
0826151
负责人：
Wilfred Tysoe
金额：
$ 30万
依托单位：
University of Wisconsin-Milwaukee
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2008
资助国家：
美国
起止时间：
2008-08-15 至 2012-01-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=0826151&HistoricalAwards=false
关键词：
Understanding Frictional Properties Boundary Films

项目摘要

The research objective of this award is to provide a fundamental understanding of the frictional properties of thin inorganic films on metal substrates. Such films are relevant to coatings or reactively deposited films that are formed on surfaces by reaction with lubricant additives. The research strategy involves making precise measurements of frictional forces on well-defined thin films that are grown and characterized under ultrahigh vacuum conditions. This ensures that clean and well-characterized films are studied and that their surfaces remain clean to ensure that precise and reproducible experimental measurements are made. These results will be modeled at the atomic scale using quantum mechanical calculations to understand the frictional behavior and the experimental systems have been selected such that they are sufficiently simple that they can be fully modeled using this strategy. The ultimate goal of the research is thus to understand, at a fundamental molecular level, the origins of sliding friction and the mechanisms by which energy is dissipated during sliding. If successful, the results of this research will provide fundamental insights into the requirements for fabricating low-friction coatings and to enable the chemistry of lubricant additives to be designed to form coatings with targeted frictional properties. The results will be disseminated by publication in peer-reviewed journals and will be presented at national and international conferences and will thus be widely available to coatings and lubricant manufacturers. The results will also be communicated directly to local lubricant manufacturers. Graduate and undergraduate students and in physics and chemistry will benefit from an interdisciplinary project involving a close interplay between theory and experiment on a project that has real-world applications.

该奖项的研究目标是提供对金属底物上薄膜的摩擦特性的基本理解。此类膜与涂层或通过润滑剂添加剂反应在表面形成的涂层或反应沉积的膜有关。该研究策略涉及对在超高真空条件下生长和表征的明确薄膜进行精确测量。这样可以确保研究清洁且特征良好的薄膜，并保持其表面保持干净，以确保进行精确和可重现的实验测量。这些结果将使用量子机械计算以原子量表进行建模，以了解摩擦行为，并选择了实验系统，以使它们足够简单，可以使用此策略对其进行充分建模。因此，该研究的最终目标是在基本的分子水平上了解滑动摩擦的起源以及在滑动过程中消散能量的机制。如果成功的话，这项研究的结果将提供对制造低摩擦涂层的要求的基本见解，并使润滑剂添加剂的化学能够设计成具有有针对性的摩擦特性的涂料。结果将通过同行评审期刊的出版物进行传播，并将在国家和国际会议上介绍，因此将广泛用于涂料和润滑剂制造商。结果还将直接传达给当地润滑剂制造商。研究生和本科生以及物理和化学领域将受益于一个跨学科项目，涉及具有现实世界应用的项目的理论与实验之间的紧密相互作用。