Dry Friction and Wear Characteristics of Al₂O₃ Continuous-Reinforced Aluminum Based Composites

The friction and wear behavior of alumina continuous-reinforced aluminum based composites with and without 18wt.% SiC particles against NAO (organic materials without asbestos) under dry sliding friction was comparatively studied through friction and wear testing. Results show that the maximal starting friction coefficient reduced at low sliding speed (0.628 m·s-1) but decreased first and then increased at high sliding speed (2.512 m·s-1) with the increase of normal pressure. The maximal starting friction coefficient also decreased first and then increased with the increase of sliding speed under constant pressure. The composite with SiC had higher friction coefficient and better wear resistance compared with the composite without SiC.