Study on friction and wear behavior of C/C composites

Using HIT-1 ball and disc sliding wear tester to finish the friction and wear tests of C / C composites coupled with GCr15 steel. The impact of time,load,velocity and working environment on friction coefficient of C /C composites have been analyzed. The relationship between wear properties with load and velocity has been obtained. Result showed that C / C composites have stable friction coefficient,friction coefficient reduced at the initial stage,and then tended towards stability in a short range. The friction coefficient performed differently with changeable load. Load equaled with 8 N,friction coefficient performed best with the changeable velocity. When velocity equaled with 0. 576 m / s,friction coefficient performed best with the changeable load. In different working condition,frictional behavior of C / C composites were different. Besides,with revolving speed and load increasing,the mass wear increases slowly.