2020 Volume 59 Issue 1 Pages 223-227
The effect of Mn, P and Sn addition on the wear resistance of Cu–Zn alloys was studied. Ingots were prepared by adding Mn, P and Sn to Cu–45% Zn alloy one by one. A test piece was cut out from the ingot and wear testing was performed. The comparative abrasion quantity and metallic structure after the wear testing were investigated. In all the cases of the three additives, specific wear rate was increased by the addition when the additive amount was small, while it was decreased beyond that amount and reached a minimum. In the case of Mn addition, excessive addition did not cause a large change with no appearance of a second phase, but specific wear rate was again increased by the excessive P and Sn additions. This was presumed to be due to the aggregation of the second–phase compound on the friction surface, which caused the compound to fall out. For P–added materials, the minimum value of the comparative abrasion quantity was taken in this study.
