A Comparative Electrochemical Study of AZ31 and AZ91 Magnesium Alloy

A Comparative Electrochemical Study of AZ31 and AZ91 Magnesium Alloy

A comparative study has been carried out on AZ31 and AZ91 magnesium alloys in order to understand the electrochemical behavior in both alkaline and chloride containing solutions. The open circuit potential (OCP) was examined in 1 M NaOH and 3.5 mass % NaCl solutions. AZ31 magnesium alloy shows sever...

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Main Authors: S. A. Salman, R. Ichino, M. Okido
Format: Article
Language:English
Published: Hindawi Limited 2010-01-01
Series:International Journal of Corrosion
Online Access:http://dx.doi.org/10.1155/2010/412129
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spelling doaj-a34e059bd4464eb59bc3494d32e9ef532020-11-24T23:47:35ZengHindawi LimitedInternational Journal of Corrosion1687-93251687-93332010-01-01201010.1155/2010/412129412129A Comparative Electrochemical Study of AZ31 and AZ91 Magnesium AlloyS. A. Salman0R. Ichino1M. Okido2Department of Materials Science and Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, JapanDepartment of Materials Science and Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, JapanDepartment of Materials Science and Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, JapanA comparative study has been carried out on AZ31 and AZ91 magnesium alloys in order to understand the electrochemical behavior in both alkaline and chloride containing solutions. The open circuit potential (OCP) was examined in 1 M NaOH and 3.5 mass % NaCl solutions. AZ31 magnesium alloy shows several potential drops throughout the immersion in 1 M NaOH solution, though AZ91 does not show this phenomenon. The specimens were anodized at a constant potential of 3 V for 30 minutes at 298 K in 1 M NaOH solution. The anticorrosion behavior of the anodized specimens was better than those of nonanodized specimens. The anodized AZ91 has better corrosion resistance compared to nonanodized specimen and anodized AZ31 magnesium alloy.http://dx.doi.org/10.1155/2010/412129
collection DOAJ
language English
format Article
sources DOAJ
author S. A. Salman
R. Ichino
M. Okido
spellingShingle S. A. Salman
R. Ichino
M. Okido
A Comparative Electrochemical Study of AZ31 and AZ91 Magnesium Alloy
International Journal of Corrosion
author_facet S. A. Salman
R. Ichino
M. Okido
author_sort S. A. Salman
title A Comparative Electrochemical Study of AZ31 and AZ91 Magnesium Alloy
title_short A Comparative Electrochemical Study of AZ31 and AZ91 Magnesium Alloy
title_full A Comparative Electrochemical Study of AZ31 and AZ91 Magnesium Alloy
title_fullStr A Comparative Electrochemical Study of AZ31 and AZ91 Magnesium Alloy
title_full_unstemmed A Comparative Electrochemical Study of AZ31 and AZ91 Magnesium Alloy
title_sort comparative electrochemical study of az31 and az91 magnesium alloy
publisher Hindawi Limited
series International Journal of Corrosion
issn 1687-9325
1687-9333
publishDate 2010-01-01
description A comparative study has been carried out on AZ31 and AZ91 magnesium alloys in order to understand the electrochemical behavior in both alkaline and chloride containing solutions. The open circuit potential (OCP) was examined in 1 M NaOH and 3.5 mass % NaCl solutions. AZ31 magnesium alloy shows several potential drops throughout the immersion in 1 M NaOH solution, though AZ91 does not show this phenomenon. The specimens were anodized at a constant potential of 3 V for 30 minutes at 298 K in 1 M NaOH solution. The anticorrosion behavior of the anodized specimens was better than those of nonanodized specimens. The anodized AZ91 has better corrosion resistance compared to nonanodized specimen and anodized AZ31 magnesium alloy.
url http://dx.doi.org/10.1155/2010/412129
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AT sasalman comparativeelectrochemicalstudyofaz31andaz91magnesiumalloy
AT richino comparativeelectrochemicalstudyofaz31andaz91magnesiumalloy
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