Effect of carbon fibre content on friction and wear properties of carbon fibre reinforced PA6 composites

The tribological performance of polyamide 6 (PA6) and carbon fibre reinforced PA6 (CF/PA6) under dry sliding condition was examined. Different contents of CFs were employed as reinforcement. All filled and unfilled PA6 composites were tested against CGr15 ball, and representative testing was performed. The effects of CF content on the friction and wear properties of the composites were investigated. The worn morphologies of neat PA6 and its composites were examined by SEM, and the wear mechanisms were discussed. Moreover, all filled PA6 have superior tribological characteristics to unfilled PA6. The optimum wear reduction was obtained when the CF content is 20 vol.-%.