Tribological Properties of PTFE Nanocomposites at Different Temperature

The effect of temperature on the tribological properties of polytetrafluoroethylene(PTFE)nanocomposites was studied using a tribometer.The abraded surfaces of the composites were investigated by SEM.The results showed that the addition of nano-Al2O3 obviously improved the wear resistance of the PTFE nanocomposites.The friction coefficient and wear resistance decreased with increasing temperature.The abrasive wear and adhesive wear mechanism were both included in the wear mechanism for the PTFE/Al2O3 nanocomposites while the wear mechanism of pure PTFE only included adhesive wear.