Effect of continuous rotation evolutional control on the pitting corrosion resistance of anodized aluminum-magnesium alloy

Hiroaki Nakano, In Joon Son, Hideki Ohara, Satoshi Oue, Katsuaki Nakamura, Hisaaki Fukushima

研究成果: ジャーナルへの寄稿記事

抄録

The effect of continuous rotation evolutional controHCREO) on the pitting corrosion resistance of anodized Al-Mg alloy was investigated by electrochemical techniques in a solution containing 0.2 mol/L of AICI3 and by surface analysis. The potentials for pitting corrosion of anodized Al-Mg alloy was evidently shifted to the less noble direction by CREO and the time required before initiating pitting corrosion was shorter with CREO, indicating that the corrosion resistance with CREO was worse than without. The precipitates of Fe-Al intermetallic compounds remained in anodic oxide films of Al-Mg alloy. Cracks occurred in the anodic oxide films through the precipitates during initial pitting corrosion. The pitting corrosion was accelerated by cracks. The internal stress present in the anodic oxide films of the alloys with CREO was higher than without. It is assumed that the pitting corrosion is promoted by these cracks as a result of the higher internal stress resulting from the CREO.

元の言語英語
ページ(範囲)1985-1991
ページ数7
ジャーナルMaterials Transactions
50
発行部数8
DOI
出版物ステータス出版済み - 8 1 2009

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pitting
magnesium alloys
Pitting
Magnesium alloys
corrosion resistance
aluminum alloys
Corrosion resistance
Aluminum alloys
corrosion
Corrosion
Oxide films
oxide films
cracks
Cracks
residual stress
Precipitates
precipitates
Residual stresses
Surface analysis
Intermetallics

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering
  • Mechanics of Materials

これを引用

Effect of continuous rotation evolutional control on the pitting corrosion resistance of anodized aluminum-magnesium alloy. / Nakano, Hiroaki; Son, In Joon; Ohara, Hideki; Oue, Satoshi; Nakamura, Katsuaki; Fukushima, Hisaaki.

:: Materials Transactions, 巻 50, 番号 8, 01.08.2009, p. 1985-1991.

研究成果: ジャーナルへの寄稿記事

Nakano, Hiroaki ; Son, In Joon ; Ohara, Hideki ; Oue, Satoshi ; Nakamura, Katsuaki ; Fukushima, Hisaaki. / Effect of continuous rotation evolutional control on the pitting corrosion resistance of anodized aluminum-magnesium alloy. :: Materials Transactions. 2009 ; 巻 50, 番号 8. pp. 1985-1991.
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abstract = "The effect of continuous rotation evolutional controHCREO) on the pitting corrosion resistance of anodized Al-Mg alloy was investigated by electrochemical techniques in a solution containing 0.2 mol/L of AICI3 and by surface analysis. The potentials for pitting corrosion of anodized Al-Mg alloy was evidently shifted to the less noble direction by CREO and the time required before initiating pitting corrosion was shorter with CREO, indicating that the corrosion resistance with CREO was worse than without. The precipitates of Fe-Al intermetallic compounds remained in anodic oxide films of Al-Mg alloy. Cracks occurred in the anodic oxide films through the precipitates during initial pitting corrosion. The pitting corrosion was accelerated by cracks. The internal stress present in the anodic oxide films of the alloys with CREO was higher than without. It is assumed that the pitting corrosion is promoted by these cracks as a result of the higher internal stress resulting from the CREO.",
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