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Language: English

Conflict of Interest: In relation to this article, we declare that there is no conflict of interest.

Publication history: Received December 27, 2007
Accepted June 26, 2008

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Electrochemical characteristics of Al-Mg alloy in seawater for leisure ship: Stress corrosion cracking and hydrogen embrittlement

Seong-Jong Kim^† Min-Su Han Seok-Ki Jang

Division of Marine Engineering, Mokpo Maritime University, 571, Jukgyo-dong, Mokpo-si, Jeonnam 530-729, Korea

ksj@mmu.ac.kr

Korean Journal of Chemical Engineering, January 2009, 26(1), 250-257(8), 10.1007/s11814-009-0042-9

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Abstract

We investigated the mechanical and electrochemical properties of aluminum alloys. Aluminum alloys do not corrode due to the formation of an anti-corrosive passive film, such as Al2O3 or Al2O3·3H2O, which resists corrosion in neutral solutions. In seawater, however, Cl. ions destroy this passive film. The current density in the first passivity range during the application of anodic protection had a similar value as that for concentration polarization by dissolved oxygen during the application of cathodic protection. The current density in the first passivity range had the lowest value overall. The lowest current densities in the potentiostatic and galvanostatic tests occurred at potentials of .1.4 to .0.7 V and .0.9 to .0.7 V, respectively.

Keywords

Electrochemical Property Aluminum Alloy Corrosion Seawater Passivity Cathodic Protection Potentiostatic Test

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