以酒石酸盐为络合剂,胺化合物为辅助络合剂,研究钢铁基体上碱性无氰镀铜工艺,探讨了搅拌、镀液温度、pH、ρ(Cu2+)和添加剂对镀层外观的影响.考察了镀液的深镀能力和抗Fe2+、Fe3+、Zn2+及Sn4+杂质能力以及镀层与铁基体的结合力.实验结果表明:可以在宽广的工艺条件下获得光亮的铜镀层;阴极电流效率随温度、pH和ρ(Cu2+)提高而增大,在实验确定的工艺条件下ηκ为82%左右;镀液深镀能力达91%;计时电位曲线试验结果表明,基体上的钝化膜在沉积初期被破坏而处于活化状态,使得铜镀层与钢铁基体有足够的结合力.
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