The Influence of Temperature on the Co-deposition of Iron in Electro deposited Zinc Metal Films

The effect of substrate temperature on the co-deposition of iron in zinc films at different current densities and ferrous ion concentrations, were investigated systematically using atomic absorption technique for analyzing the film content from Zn and Fe. The co-deposited iron was not linearly dependent on bath temperature. It was also found that the co-deposited iron suppresses markedly the electrowinning of Zn form sulfate solution at T≤75˚C. The lowest value of the co-deposited iron was recorded at 95˚C. Such investigations have importance in electrowinning of Zn, storage batteries and in electrochemical catalysis.