讨论了复合渗层的组织、相结构以及耐磨性。结果表明，Ni-P合金经氮碳共渗后基体中的铁和Ni－P合金层中的镍相互扩散，形成“钉扎效应”，显著提高镀层与基体间的结合力；此外，弯曲和折断试验表明，经氮碳共渗后的Ni－P合金层与基体金属的结合强度远大于经热处理后的Ni-P合金层；共渗后的镀层，其耐磨性优于经热处理后的镀层。 The structure, phase structure and wear resistance of the composite layer were discussed. The results show that Ni and P in the Ni-P alloy are diffused into each other by Ni-P alloy to form a “pinning effect”, which significantly increases the adhesion between the coating and the substrate. In addition, the bending and The fracture test shows that the bonding strength of the Ni-P alloy layer after nitrocarburizing with the matrix metal is much greater than that of the Ni-P alloy layer after heat treatment; the wear resistance of the coating after the infiltration is better than that after the heat treatment Plating.