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Effect of metal cations on corrosion behavior and surface film structure of the A3003 aluminum alloy in model tap waters

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Title: Effect of metal cations on corrosion behavior and surface film structure of the A3003 aluminum alloy in model tap waters
Authors: Otani, K. Browse this author
Sakairi, Masatoshi Browse this author →KAKEN DB
Sasaki, R. Browse this author
Kaneko, A. Browse this author
Seki, Y. Browse this author
Nagasawa, D. Browse this author
Keywords: Metal cation
Aluminum alloy
Tap water
Passive film
Issue Date: Feb-2014
Publisher: Springer
Journal Title: Journal of solid state electrochemistry
Volume: 18
Issue: 2
Start Page: 325
End Page: 332
Publisher DOI: 10.1007/s10008-013-2260-7
Abstract: The effect of the metal cations, Na+, K+, Ca2+, Mg2+, Zn2+, and Ni2+, on the oxide film structure and morphology changes during long-term immersion corrosion tests of aluminum alloy (A3003) in model tap waters was investigated by X-ray photoelectron spectroscopy (XPS) and scanning electron microscopy. The effect of the metal cations on the corrosion behavior was also investigated with mass change and electrochemical tests. The hardness of the metal cations, X, based on the hard and soft acids and bases (HSAB) concept was applied to explain the effect of metal cations on the passive oxide film structure and corrosion resistance. The mass change rate and corrosion current density decreased with increasing metal cation hardness. The XPS results showed that hard metal cations like Zn2+ and Ni2+ were incorporated in the oxide films, while the four soft metal cations were not incorporated in the oxide films. The results are in good agreement with those which could be expected from the HSAB hardness of the metal cations.
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Type: article (author version)
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

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