采用光学显微镜和扫描电镜对角钢在氯化镍含量不同的无铵助镀剂中助镀获得的镀层进行了镀层金属间化合物层形貌和镀层厚度的分析.结果表明,在一定范围内,随着氯化镍含量的增加,获得的镀层厚度不断减小,当氯化镍含量增加到6 g/L时镀层厚度不再随氯化镍含量的增加而减薄,氯化镍含量增加到6~8 g/L时镀层最薄,氯化镍含量为4~8 g/L时能获得厚度适中的镀层;氯化镍含量对镀锌层的形貌有影响,随着氯化镍含量的增加金属间化合物层中的ζ金属间化合物层减薄,晶粒尺寸减小.Г和δ金属间化合物变化不明显.
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