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 <TEX>$Cu^{2+}$</TEX> and 170 g/l <TEX>$H_2SO_4$</TEX>. 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, <TEX>$Cu-3$</TEX>As intermetallic phase was formed locally on the deposits.
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Schedule a callMore From: Journal of the Korean institute of surface engineering
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