A Study on Tribological Behavior of Engineering Ceramics - Representative Metals

摘要

In order to obtain the optimal engineering ceramics- metals pair with the best tribological performance, the tribological orthogonal tests for engineering ceramics such as Si_3N_4, SiC, ZrO_2 and representative metals such as 45steel, CCr15 bearing steel, tin bronze QSn4-3 and tin-based babbit ZChSnSb8-4 with oil-less lubrication were carried out by using UMT-3 wear machine and SEM. Single factor analysis of load on friction and wear properties of Si_3N_4- babbit pair was performed. The results indicate that ceramic- metal pairs possess excellent tribological performance. Si3N4- babbit pair has the lowest friction coefficient and SiC- babbit pair is best in attrition. The friction coefficient varies sharply on low loads and the wear rate monotonous rises with the increase of load.