Influence of slag weight fraction on mechanical, thermal and tribological properties of polymer based friction materials

This paper aimed to study the influence of blast furnace slags on mechanical, thermal and tribological properties of friction materials elaborated by the dry heat-pressmolding method. Physical, mechanical and thermal properties were analyzed and tribological behavior was studied for varying the extent of doping (13-43 wt.%). The results indicate that the hardness decreases from 63.6 HRL to 57.0 HRL with increasing slag content from 0 to 43 wt. %. But density is opposite for the doped samples. The impact strength gradually increases from 3.59 kJ/m(2) to 3.70 kJ/m(2) when the content of slag increases from 0 to 43 wt.%. Doping was also found to increase the friction coefficients but decrease wear rates, mass-loss and heat release. The sample S-4 has a more superior and stable friction coefficient than others because of the transfer layers formed on the surface of friction materials. (C) 2015 Elsevier Ltd. All rights reserved.