Evaluation of Wear Resistance of Friction Materials Prepared by Granulation.
The tribological properties of friction materials prepared by hot-pressing pellets of different sizes were experimentally investigated. Friction and wear tests of the specimens were performed and morphological analysis was carried out by investigating images acquired with both scanning electron and confocal laser microscopes. The highest friction coefficient of friction materials was obtained with pellets having 1-5 mm size. The lowest wear rate was obtained with pellets having 8-10 mm size. Specimens processed by mixing pellets of different sizes had the highest density and the lowest roughness and were the least expensive to fabricate. The results show that granulation generally enabled increasing the friction coefficient, decreasing the wear rate, and reducing the number of defects on the surface of friction materials.
Yunhai
Y
Ma
Yucheng
Y
Liu
MENRVA Research Group, School of Engineering Science, Simon Fraser University , 8888 University Drive, V5A 1J6 Burnaby, BC Canada.
Carlo
C
Menon
Jin
J
Tong
friction coefficient; friction materials; granulation; particle classification; wear rate; wear resistance