当润滑油膜非常薄时,在两相互移动表面只相隔几个分子直径的情况下,油分子是怎样运动,摩擦力是怎样变化的呢?长期以来,人们对这种精确到分子程度的摩擦机理一直不甚了了。主要原因是缺乏试验手段和方法。最近,美国加利福尼亚州立大学有关学者对此进行了深入研究。首先,他们研制了一台专门的测力仪器,仪器上有一对弧形云母试板,这两片板可以被相互移开、相互靠近直至贴合到一起,还可以在保持一定压力下相 When the lubricant film is very thin, how often do the oil molecules move and how the friction changes as the distance between the two moving surfaces is only a few molecules apart? It has long been a question of how accurate this molecular-scale frictional mechanism It’s been a long time. The main reason is the lack of experimental means and methods. Recently, relevant scholars at California State University conducted an in-depth study. First, they developed a special dynamometer with a pair of curved mica panels that can be moved away from each other until they fit together, and while under pressure