Development of anti-corrosive and wear resistant copper alloy for bushings

Abstract Recent diesel engines require higher performance and longer life. Due to high cylinder pressure, the operating unit load and temperature of piston pin bushings become high. Therefore, good load carrying capacity, wear resistance and corrosion resistance are required for piston pin bushings. For this reason, we have studied the effect of elements added to copper alloy for corrosion resistance and the effects of hard particles added into the copper matrix for wear resistance and the machinability of materials. Based on the experimental results, we have developed a new bushing material which improves the wear resistance and the corrosion resistance.