Effect of P content on microstructure and wear properties of ZCuPb20Sn5 alloy

The properties and friction behavior of ZCuPb20Sn5 modified with P were investigated. With the P addition and content increase, the second phase appeared and gradually increased in amount. Also, the microstructure of ZCuPb20Sn5 was refined and evenly distributed. The addition of P had a beneficial effect on the microstructure and properties of ZCuPb20Sn5. As the P content increased, the hardness and tensile strength of ZCuPb20Sn5 increased, but the elongation, the friction coefficient and the wear rate decreased. The wear mechanism of ZCuPb20Sn5 was mainly adhesive wear, and a small amount of debris was produced. As the P content increased, the anti-wear resistance of ZCuPb20Sn5 deteriorated.