THE INFLUENCE OF LUBRICANT ON FRICTION COEFFICIENT OF HYBRID AL-SIC-GR COMPOSITES

Abstract

In the paper were shown the test results of tribological characteristics of hybrid composites with alloy base A356 reinforced by SiC and graphite. Hybrid composites are obtained by compo casting procedure. Tribological tests are realized on tribometer with block on disc compact pair in Tribological Center of Faculty of Engineering in Kragujevac. The tests were done for different normal load values, sliding speeds, sliding distance, with and without lubrication. Hybrid composite with 10% SiC and 1% graphite was used as a material. The main parameter analyzed in the paper is coefficient of friction obtained in the conditions with and without lubrication.