Cu-10Sn-3Pb-4Ni合金由于较高的Sn含量以及凝固组织中存在硬脆δ-Cu41Sn11相，具备较高的强度、硬度和耐磨性，广泛应用于具有高速滑动摩擦场景的机械部件中。本文通过真空感应熔炼Cu-10Sn-3Pb-4Ni合金，采用光学显微镜、X射线及荧光探伤对添加脱氧剂Cu-10P前后Cu-10Sn-3Pb-4Ni合金的组织和力学性能进行测试表征。结果表明，添加0.05%(质量分数)脱氧剂Cu-10P后，铸锭组织更加均匀，树枝晶的生长更加充分，δ相的生长得到抑制。铸锭的边缘抗拉强度由323 MPa提升到了342 MPa，断后伸长率由12.5%提升到了16.5%；铸锭芯部抗拉强度由300 MPa提升到了324 MPa，断后伸长率由11%提升到了19%。

Due to the high Sn content and the presence of a hardness and brittleness δ-Cu41Sn11 phase in the solidification structure, Cu-10Sn-3Pb-4Ni alloys have high strength, hardness and wear resistance, allowing them to be widely used in high-speed sliding friction scenarios. This article reports a comparative study of a Cu-10Sn alloy prepared by vacuum induction melting with the addition of a Cu-10P deoxidizer. The microstructure and mechanical properties of the Cu-10Sn-3Pb-4Ni alloy were tested and characterized using optical microscopy and X-ray and fluorescence inspections. The results show that after adding 0.05 wt.% Cu-10P as a deoxidizer, the microstructure of the ingot becomes more uniform, the growth of dendrites becomes more sufficient, and the growth of the δ phase is inhibited. The tensile strength of the edge in the ingot increases from 323 MPa to 342 MPa, and the elongation after fracture increases from 12.5% to 16.5%. The tensile strength of the core in the ingot increases from 300 MPa to 324 MPa, and the elongation after fracture increases from 11% to 19%.