中温化学镀镍工艺及添加剂的研究

Study of electroless nickel plating process and its additive at medium temperature

鉴于目前化学镀镍工艺存在的镀液温度高、能耗大及稳定性差等缺点，提出了一种中温化学镀镍工艺。在正交试验结果的基础上，采用三种添加剂组合使用，分别研究了络合剂、组合添加剂、温度及ｐＨ值对镀层沉积速度的影响。结果表明：采用组合添加剂能明显提高镀液的稳定性及沉积速度。

In view of the weaknesses of traditional electroless nickel plating process such as high bath temperature, large energy loss and poor bath stability. An electroless nickel plating process at medium temperature was advanced, combined additive consisting of three additives was adopted. Effects of complexing agent, combined additive, temperature and pH value on deposition rate were studied on the basis of orthogonal tests. The results show that electroless nickel plating process is greatly improved in bath stability and deposition rate by adopting combined additive.