针对近年来电镀镍铬合金的研究概况以及存在的主要问题,阐述了Cr3+配位化学的特点,即Cr3+配位化合物在热力学上的稳定性和动力学上的惰性对镀液的影响.分析了镀液中溶剂、主盐、配位剂、缓冲剂、导电盐和表面活性剂等组分的作用及如何选择恰当的比例.介绍了电流密度、pH值、温度和搅拌等工艺参数对镀层成分和质量的影响.论述了镍铬合金镀中的阳极和阴极过程,探讨了在阳极过程中生成的氯气和在阴极过程中生成的Cr2+对沉积过程的作用.最后,介绍了镍铬合金镀层的组织及热处理对镀层性能的影响.
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