A Comparative Electrochemical Study of AZ31 and AZ91 Magnesium Alloy-Reference-Cited by-同舟云学术

A Comparative Electrochemical Study of AZ31 and AZ91 Magnesium Alloy

Published:2010 Issue: Volume:2010 Page:1-7
ISSN:1687-9325
Container-title:International Journal of Corrosion
language:en
Short-container-title:International Journal of Corrosion

Author:

Salman S. A.¹²,Ichino R.¹³,Okido M.¹

Affiliation:

1. Department of Materials Science and Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan

2. Mining, Metallurgy and Petroleum Engineering Department, Faculty of Engineering, Al-Azhar University, Nasr City, Cairo 11371, Egypt

3. Ecotopia Science Institute, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan

Abstract

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.

Publisher

Hindawi Limited

Subject

Process Chemistry and Technology,General Materials Science

Link

http://downloads.hindawi.com/journals/ijc/2010/412129.pdf

Reference16 articles.

1. Corrosion Mechanisms of Magnesium Alloys

2. Corrosion resistance of magnesium treated by hydrocarbon plasma immersion ion implantation

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