AZ31镁合金化学镀镍工艺的研究  

Research on the Process of Electroless Nickel Plating on AZ31 Magnesium Alloy

作　　者：闫鹏[1] 游国强[1,2] 段平安[1] 张恒[1] 

机构地区：[1]重庆大学材料科学与工程学院,重庆400044 [2]重庆大学国家镁合金材料工程技术研究中心,重庆400044

出　　处：《电镀与环保》2018年第1期26-29,共4页Electroplating & Pollution Control

基　　金：摩托车镁轮毂用高性价比表面涂装技术研究及开发(14A0101)

摘　　要：对AZ31镁合金化学镀镍工艺进行了研究,并采用失重法和扫描电镜研究了不同的前处理工艺。确定最佳酸洗工艺配方为C_2H_4O_28~12mL/L、H_3PO_420~30mL/L;最佳活化工艺配方为NH_4HF 60~80g/L、H_3BO_330~45g/L、H_3PO_420~30mL/L。另外,研究了pH值、温度和时间对沉积速率及化学镀镍层孔隙率的影响,确定了最佳的化学镀镍工艺参数为pH值6.5、温度90~95℃、时间1h。The process of electroless nickel plating on AZ31 magnesium alloy was studied, and different pretreatment process was investigated by means of weight loss method and scanning electron microscopy. The optimal formulation of pickling was C2 H4 O2 8~ 12 mL/L, H3 PO4 20~ 30 mL/L, and the optimal formulation of activation was NH4HF 60~80 g/L, HaBO3 30-45 g/L, H3PO4 20~30 mL/L. Furthermore, the influences of pH value, temperature and time on the deposition rate and porosity of electroless nickel coating were investigated, and the optimal process parameters of electroless nickel plating were pH value 6.5, temperature 90-95 ℃, time lh.

关 键 词：AZ31镁合金 前处理 化学镀镍 

分 类 号：TQ153[化学工程—电化学工业]