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通过改变镀液还原剂的含量和加入定量的乙酸钠，研究对化学镀镍硼合金形貌和性能的变化。从晶体结构、镀层形貌、硬度和耐磨曲线等几方面来分析加入乙酸钠12g／L时，化学镀Ni—B合金镀层形貌和性能改善的原因。乙酸钠起到缓冲剂的作用，降低了化学镀Ni—B的镀速，提高了化学镀Ni-B的致密度，改善了镀层的质量从而提高镀层的各种性能。“,”In order to enhance the properties of electroless Ni-B, the changes in morphology and performance of electroless Ni-B alloy was studied by changing the contents of reducing agent and adding quantitative sodium acetate. The reasons of the morphology and pe