A new condensation product for zinc plating from non-cyanide alkaline bath

被引：27
|
作者：
Naik, YA [1 ]
Venkatesha, TV [1 ]
机构：
[1] Kuvempu Univ, Dept Studies Chem, Shankaraghatta 577451, India
来源：
BULLETIN OF MATERIALS SCIENCE | 2005年 / 28卷 / 05期
关键词：
alkaline bath; electroplating; Hull cell studies; non-cyanide bath; zinc plating;
D O I：
10.1007/BF02711243
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Zinc electroplating from non-cyanide alkaline solution is carried out in the presence of condensation product formed between DL-alanine (DLA) and glutaraldehyde. The bath constituents and bath variables are optimized through standard Hull cell experiments. The current efficiency and the throwing power are measured. High shift of potential towards more cathodic direction was observed in presence of addition agents. Corrosion resistance test reveals good protection of base metal by zinc coating obtained from the developed electrolyte. SEM photomicrographs show fine-grained deposit in the presence of condensation product. IR spectrum of the scraped deposit shows the inclusion of the condensation product in the deposit during plating. The consumption of brightener in the lab-scale is 6 mLL(-1) for 1000 amp-hour.
引用
收藏
页码：495 / 501
页数：7
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