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Published in:
2016 | OriginalPaper | Chapter
Effect of TIN on the Corrosion and Electrochemical Behavior of Al-Zn-Mg Alloy in Sea Water
Authors : M. M. Sadawy, K. M. Zohdy
Published in: Light Metals 2014
Publisher: Springer International Publishing
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The effect of tin on the corrosion and electrochemical behavior of Al-Zn-Mg alloy in 3.5 wt.% NaCl solution was investigated by open-circuit potential measurements (OCP), polarization techniques and electrochemical impedance spectroscopy (EIS). The Morphology of the alloy after corrosion was studied by scanning electron microscopy (SEM). The results showed that the anodic dissolution of Al-Zn-Mg alloy increased with increasing tin content. EIS measurements showed that the polarization resistance decreases with increasing tin content. Moreover, surface analysis indicated that Sn reduced intergranular corrosion of the aluminum alloy and promoted the formation of the corrosion products.