ELECTROCHEMICAL BEHAVIOR OF Z
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Date
2022-05-01
Journal Title
Journal ISSN
Volume Title
Publisher
university of eloued جامعة الوادي
Abstract
Zinc is common metal used for steel protection. In this work, an alloy Zn-1 % wt. Pb was
prepared by fusion at 500°C. The analysis of the corrosion behavior was studied with pure Zn
anode as control in aerated solution of 0.9 M ZnSO4.7H2O + 1.63 M H2SO4 at 38°C.The
effect of lead impurity on corrosion resistance of zinc anode in zinc electrorefining process
was investigated using open circuit potential (OCP), Tafel plots, chronoamperometry at
imposed constant anodic potential and electrochemical impedance spectroscopy (EIS)
techniques. Samples were characterized by chemical analysis, optic microscope (OM) and
X-ray diffraction (XRD). The results show that the lead impurity leads to degradation of the
behavior of the alloy due to negative effect on the microstructure. Lead increases the
corrosion rate and decreases the corrosion resistance of Zn-1 % wt. Pb alloy.
Description
artical
Keywords
Zinc electrorefining process, impurity, pure Zn and Zn-1 % wt. Pb anodes, acidic solution, microstructure, anodic corrosion behavior.
Citation
Habiba Kherrab-Boukezzata1,2*, Naima Ghemmit-Doulache1,2, Moussa Bounoughaz2, Slimane. ELECTROCHEMICAL BEHAVIOR OF Z. Journal of Fundamental and sciences. vol.14, no 2. May 2022. Faculty of exact sciences. university of el oued. [visited in 01/01/2022. available from [copy the link here]