Acta Metallurgica Sinica (English Letters) ›› 2011, Vol. 24 ›› Issue (6): 443-448.DOI: 10.11890/1006-7191-116-443

• 研究论文 • 上一篇    下一篇

Electrodeposition of aluminum on aluminum surface from molten salt

Wenmao Huang(黄文貌)1,Xiangyu Xia(夏翔宇)1,2,Bin Liu(刘斌)1,2,Yu Liu(刘预)1,2,Haowei Wang(王浩伟)1,2,Naiheng Ma(马乃恒)1   

  1. 1. 上海交通大学
    2.
  • 收稿日期:2011-03-07 修回日期:2011-06-29 出版日期:2011-12-25 发布日期:2011-12-22
  • 通讯作者: Naiheng Ma(马乃恒)

Electrodeposition of aluminum on aluminum surface from molten salt

Wenmao HUANG, Xiangyu XIA, Bin LIU, Yu LIU,Haowei WANG,Naiheng MA   

  1. State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, China
  • Received:2011-03-07 Revised:2011-06-29 Online:2011-12-25 Published:2011-12-22
  • Contact: Naiheng MA

摘要: 本文研究了经过简单研磨和磷化处理后的铝片在8:1:1(质量比)AlCl3-NaCl-KCl的无机熔盐中的电沉积。采用扫描电子显微镜(SEM)和能谱分析仪(EDS)对镀层的表面形态、微观结构及物相组成进行观察和分析。采用急冷却法分析了镀层的结合力。结果表明,经过两种表面处理后的铝片上所沉积的镀层致密、连续且与基体结合较好。经过简单研磨后得到的镀层平均厚度为12μm,经磷化处理后得到镀层平均厚度则为9μm。四甲基氯化铵(TMAC)的添加有效地抑制了枝晶的生长,阳极活化则提高了镀层的结合力。结合力分析显示镀层与基体结合得较好。同时在铝基复合材料上电沉积铝也初步取得了较好的效果。

Abstract: The surface morphology, microstructure and composition of the aluminum coating of the electrodeposition plates in AlCl3-NaCl-KCl molten salt with a mass ratio of 8:1:1 were investigated by SEM and EDS. The binding force was measured by splat-cooling method and bending method. The results indicate that the coatings with average thicknesses of 12 and 9 μm for both plates treated by simple grinding and phosphating are compacted, continuous and well adhered respectively. Tetramethylammonium chloride (TMAC) can effectively prevent the growth of dendritic crystal, and the anode activation may improve the adhesion of the coating. Binding force analysis shows that both aluminum coatings are strongly adhered to the substrates.

Key words: Aluminum, Electrodeposition, Surface morphology, Molten salt