A Study on the Frictional Characteristics of B$_{4}$C Added Cu Base Sintered Friction Material

B$_{4}$C의 첨가에 따른 동계소결합금 마찰재의 마찰특성 변화에 관한 연구

Examined in this paper is the effect of B$_{4}$C addition on the frictional characteristics of Cu-Sn based sintered friction material. For the specimens 1%, 2% and 4% of B$_{4}$C were added into the reference material. A pin-on-disk type friction tester was used to measure the friction and wear with respect to the surface temperature and sliding distance. Wear mechanism of each specimen is analyzed in the view point of the oxide film formation. The specimen containing 4% of B$_{4}$C showed stable friction and low wear since the oxide film was sustained up to higher surface temperature ranges.