钢/玻璃的摩擦磨损性能动态观测研究

Research of Friction and Wear Behavior of Steel/ Glass in Dynamic Observation

本实验在自行设计的摩擦磨损动态观测实验机进行,摩擦副之间的接触采用球-盘式接触。研究表明:当以较低速度滑动时,钢球表面的氧化物起到抗磨作用;滑动速度达到一定值时,氧化膜的生成速度小于氧化膜的磨损速度,摩擦表面为粘着磨损;当滑动速度继续升高时,摩擦表面的活化能增加,氧化加速,又出现氧化磨损;而滑动速度过高时,粘着磨损成为主要磨损形式,同时由于磨粒的作用,表面也发生疲劳磨损和磨料磨损,致使磨损急剧增加;表面层在摩擦热导致的高温条件下,氧化膜的生成速度又有所增加,氧化磨损为主要形式。

The friction and wear behavior of Steel/Glass was studied in dynamic observation tester, which is touched on boll and plan. The results shows that the oxides of the steel ball surface act as antiwear when in low sliding speed; and in definite sliding speed the speed that oxide film grows is less than that oxide film is wore, the surface fiction is adhesion wear; with the increasing of sliding speed, the activation energy is increased in the surface fiction, oxidation is speeded up and oxide wear happens in the fiction surface; when in high sliding speed, the adhesion wear is formed, at the same time the abrasive wear and fatigued wear appears for the role of grains of rub, which brings about intense wear; the speed the oxide film grows is increased and oxide wear is formed in the fiction surface because of the high temperature resulted from fiction heat.