Selection of complexing agent is one of the keys for electroless nickel plating technology. With two commonly used organic acids — citric acid and succinic acid as complexing agents, plating rate and mass fraction of phosphorus content in coating as evaluating indicator, their effects were investigated when they are used in separate and compounded forms on the basis of the single-factor experiment. The results show that single complexing agent is difficult to simultaneously satisfy the requirements of electroless nickel plating on plating rate and mass fraction of phosphorus content in coating while compounded use of complexing agents can overcome the difficulty between plating rate and mass fraction of phosphorus content in coating; when citric acid is 20 g/L and succinic acid 6 g/L. Plating rate is moderate, but the mass fraction of phosphorus content in coating is higher.%配位剂的选择是化学镀镍技术的关键之一.使用两种常用的有机酸——柠檬酸和丁二酸作为配位剂,以镀速和镀层中磷的质量分数为评价指标,先分别考察两者单独使用时的影响,然后在单因素实验的基础上,考察两者复配使用时的影响.结果表明:单一配位剂难以同时满足化学镀镍工艺对镀速和镀层中磷的质量分数的要求,配位剂复配使用可以克服镀速与镀层中磷的质量分数之间的矛盾；在柠檬酸20 g/L,丁二酸6 g/L的条件下,镀速适中且镀层中磷的质量分数较高.
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