Effect of Tin on the corrosion of Mg-5Al based alloy in 3.5 wt.% NaCl Solution

doi:10.15344/2455-2372/2015/118

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International Journal of Metallurgical & Materials Engineering Volume 1 (2015), Article ID 1:IJMME-118, 9 pages
http://dx.doi.org/10.15344/2455-2372/2015/118

Research Article

Effect of Tin on the corrosion of Mg-5Al based alloy in 3.5 wt.% NaCl Solution

Nguyen Dang Nam¹, Vu Thi Hanh Thu² and Nguyen Thi Thanh To^3*

¹Petroleum Department, PetroVietnam University, Ba Ria City, Ba Ria - Vung Tau Province 74000, Vietnam
²Faculty of Physics and Engineering Physics, University of Science, 227 Nguyen Van Cu Str, Dist 5, Ho Chi Minh City, Vietnam
³Faculty of Applied Sciences, Ton Duc Thang University, Nguyen Huu Tho Str., Tan Phong Ward, Dist. 7, Ho Chi Minh City, Vietnam

Corresponding Author Details: Nguyen Thi Thanh To, Faculty of Applied Sciences, Ton Duc Thang University, Nguyen Huu Tho Str., Tan Phong Ward, Dist. 7, Ho Chi Minh City, Vietnam, Tel. +84 984 219 234; E-mail: nttto.c3tcvan@khanhhoa.edu.vn

Received: 02 May 2015; Accepted: 05 December 2015; Published: 08 December 2015

Citation: Nam ND, Thu VTH, To NTT (2015) Effect of Tin on the corrosion of Mg-5Al based alloy in 3.5 wt.% NaCl Solution. Int J Metall Mater Eng 1: 118. doi: http://dx.doi.org/10.15344/2455-2372/2015/118

Copyright: © 2015 Nam et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Abstract

The corrosion resistance of a Mg-5Al alloy was improved by the addition of tin up to 3.0 wt.% due to grain refinement, formation of a protective corrosion product layer, and the lower hydrogen evolution rate. On the other hand, the addition of 4.0 wt.% tin has a deleterious effect on the corrosion resistance of the Mg-5Al alloy in 3.5 wt.% NaCl solution as a result of the higher hydrogen evolution rate that hinder the formation of the protective corrosion product layer.

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