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http://dx.doi.org/10.5695/JKISE.2009.42.3.103

The Effect of Arsenic on Copper Electrodeposition in Copper-Sulfate Solutions in Copper-Electrorefining  

Kim, Do-Hyung (School of Materials Science and Engineering, Pusan National University)
Kim, Yong-Hwan (School of Materials Science and Engineering, Pusan National University)
Chung, Won-Sub (School of Materials Science and Engineering, Pusan National University)
Publication Information
Journal of the Korean institute of surface engineering / v.42, no.3, 2009 , pp. 103-108 More about this Journal
Abstract
The effect of Arsenic in copper-sulfate solutions during electrorefining of copper was investigated using scanning electron microscopy, X-ray diffraction and cyclic voltammetry analysis. Electrodeposition was carried out using Arsenic, Antimony and bismuth addition to sulfate electrolytes: 45 g/l $Cu^{2+}$ and 170 g/l $H_2SO_4$. Arsenic in sulfate electrolytes changed the morphology and structure of the copper deposits as compared with those obtained from impurity free solutions. When arsenic was present in the sulfate electrolytes, $Cu-3$As intermetallic phase was formed locally on the deposits.
Keywords
Electrorefining; Copper; Arsenic; Electrodepostion; Electrocrystallization;
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