比较并评价了以甲醛和以次磷酸钠为还原剂的化学镀铜工艺.结果表明,次磷酸钠镀铜液的稳定性高于甲醛镀铜液,次磷酸钠镀液的沉积速率高于甲醛镀液.以甲醛为还原剂的镀层晶粒细小,而以次磷酸钠为还原剂的镀层呈团粒状.甲醛镀铜层铜的质量分数接近100%,次磷酸钠镀铜层中铜的质量分数为93.9%,镍的质量分数为6.1%,镀层为铜-镍合金.以甲醛为还原剂的化学镀铜层的电导率、抗拉强度、延伸率等物理性能均优于次磷酸钠化学镀铜层.
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