Experimental study on tribological properties of carbon/polytetrafluoroethylene hybrid fabric reinforced composite under heavy loads and oil lubrication

Carbon fabric reinforced composites have drawn much attention currently. Special carbon fabric reinforced composites were fabricated with surface layers modified by carbon/PTFE hybrid fabrics. The tribological properties of these composites under heavy loads were evaluated. The results showed that tribological properties of the composite were improved with increasing the PTFE content. The friction coefficient, volume wear and temperature rise of the composite with 6 yarns of PTFE were reduced by 40%, 91% and 64% respectively in comparison with the composite without PTFE. After testing, PTFE could be observed over the entire wear groove surface, including the bottom.