Transactions of Nonferrous Metals Society of China The Chinese Journal of Nonferrous Metals

您目前所在的位置:首页 - 期刊简介 - 详细页面

中国有色金属学报(英文版)

Transactions of Nonferrous Metals Society of China

Vol. 19    No. 2    April 2009

[PDF Download]        

    

One-step pickling-activation before magnesium alloy plating
WANG Xin-juan(王新娟)1, YU Gang(余 刚)1, OUYANG Yue-jun(欧阳越军)1, 2,
HE Xiao-mei(何晓梅)3, ZHANG Jun(张 俊)1, YE Li-yuan(叶立元)1

1. State Key Laboratory of Chemo/Bisensing and Chemometrics, College of Chemistry and Chemical Engineering,
Hunan University, Changsha 410082, China;
2. Department of Chemistry and Chemical Engineering, Huaihua College, Huaihua 418000, China;
3. Department of Chemistry and Chemical Engineering, Hunan Institute of Technology, Hengyang 421002, China

Abstract: A one-step pickling-activation process was proposed as an environmental friendly pretreatment method in phosphate-permanganate solution before electroplating on magnesium alloys. The effects of pickling-activation on qualities of coating were assessed by adhesion and porosity testing of copper plating. The interfacial reactions between specimen and solution were analyzed with SEM, EDX and XRD. The results show that the developed process of pickling-activation can equalize the potentials on substrate surface. The compacted zinc film can be obtained by zinc immersion after treating magnesium alloy in the pH 4−6 phosphate-permanganate solution for 3−5 min. The adhesion and corrosion resistance of copper plating are enhanced. The one-step pickling-activation can replace the existing two-step process of acid pickling and activation which contains a great deal of chromium and fluorine. The procedure of surface pretreatment is simplified and the production environment is improved.

 

Key words: magnesium alloy; pickling-activation; pretreatment; electroplating; corrosion resistance

ISSN 1004-0609
CN 43-1238/TG
CODEN: ZYJXFK

ISSN 1003-6326
CN 43-1239/TG
CODEN: TNMCEW

主管:中国科学技术协会 主办:中国有色金属学会 承办:中南大学
湘ICP备09001153号 版权所有:《中国有色金属学报》编辑部
------------------------------------------------------------------------------------------
地 址:湖南省长沙市岳麓山中南大学内 邮编:410083
电 话:0731-88876765,88877197,88830410   传真:0731-88877197   电子邮箱:f_ysxb@163.com