抄録
The effect of equal-channel angular pressing (ECAP) on the pitting corrosion resistance of anodized Al-Cu alloy was investigated by electrochemical techniques in a solution containing 0.2 mol/L of AlCl3 and also by surface analysis. The time required before initiating pitting corrosion of anodized Al-Cu alloy was longer with ECAP than without, indicating improvement in the pitting corrosion resistance by application of ECAP. Second phase precipitates were present in Al-Cu alloy matrix and the size of these precipitates was greatly decreased by application of ECAP. The precipitates composed of Si and Al-Cu-Si-Fe-Mn were not oxidized during anodization, and the anodic oxide film were absent at the boundary between the normal oxide films and these impurity precipitates. The pitting corrosion of anodized Al-Cu alloy occurred preferentially around these precipitates, the improvement of pitting corrosion resistance of anodized Al-Cu alloy by ECAP appears to be attributable to a decrease in the size of precipitates, which act as origins of pitting corrosion.
| 元の言語 | 英語 |
|---|---|
| ページ（範囲） | 353-359 |
| ページ数 | 7 |
| ジャーナル | Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals |
| 巻 | 72 |
| 発行部数 | 5 |
| DOI | |
| 出版物ステータス | 出版済み - 5 1 2008 |
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All Science Journal Classification (ASJC) codes
- Condensed Matter Physics
- Mechanics of Materials
- Metals and Alloys
- Materials Chemistry
これを引用
Pitting corrosion resistance of anodized aluminum-copper alloy processed by severe plastic deformation. / Son, In Joon; Nakano, Hiroaki; Oue, Satoshi; Kobayashi, Shigeo; Fukushima, Hisaaki; Horita, Zenji.
：: Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals, 巻 72, 番号 5, 01.05.2008, p. 353-359.研究成果: ジャーナルへの寄稿 › 記事
}
TY - JOUR
T1 - Pitting corrosion resistance of anodized aluminum-copper alloy processed by severe plastic deformation
AU - Son, In Joon
AU - Nakano, Hiroaki
AU - Oue, Satoshi
AU - Kobayashi, Shigeo
AU - Fukushima, Hisaaki
AU - Horita, Zenji
PY - 2008/5/1
Y1 - 2008/5/1
N2 - The effect of equal-channel angular pressing (ECAP) on the pitting corrosion resistance of anodized Al-Cu alloy was investigated by electrochemical techniques in a solution containing 0.2 mol/L of AlCl3 and also by surface analysis. The time required before initiating pitting corrosion of anodized Al-Cu alloy was longer with ECAP than without, indicating improvement in the pitting corrosion resistance by application of ECAP. Second phase precipitates were present in Al-Cu alloy matrix and the size of these precipitates was greatly decreased by application of ECAP. The precipitates composed of Si and Al-Cu-Si-Fe-Mn were not oxidized during anodization, and the anodic oxide film were absent at the boundary between the normal oxide films and these impurity precipitates. The pitting corrosion of anodized Al-Cu alloy occurred preferentially around these precipitates, the improvement of pitting corrosion resistance of anodized Al-Cu alloy by ECAP appears to be attributable to a decrease in the size of precipitates, which act as origins of pitting corrosion.
AB - The effect of equal-channel angular pressing (ECAP) on the pitting corrosion resistance of anodized Al-Cu alloy was investigated by electrochemical techniques in a solution containing 0.2 mol/L of AlCl3 and also by surface analysis. The time required before initiating pitting corrosion of anodized Al-Cu alloy was longer with ECAP than without, indicating improvement in the pitting corrosion resistance by application of ECAP. Second phase precipitates were present in Al-Cu alloy matrix and the size of these precipitates was greatly decreased by application of ECAP. The precipitates composed of Si and Al-Cu-Si-Fe-Mn were not oxidized during anodization, and the anodic oxide film were absent at the boundary between the normal oxide films and these impurity precipitates. The pitting corrosion of anodized Al-Cu alloy occurred preferentially around these precipitates, the improvement of pitting corrosion resistance of anodized Al-Cu alloy by ECAP appears to be attributable to a decrease in the size of precipitates, which act as origins of pitting corrosion.
UR - http://www.scopus.com/inward/record.url?scp=46649108196&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=46649108196&partnerID=8YFLogxK
U2 - 10.2320/jinstmet.72.353
DO - 10.2320/jinstmet.72.353
M3 - Article
AN - SCOPUS:46649108196
VL - 72
SP - 353
EP - 359
JO - Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals
JF - Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals
SN - 0021-4876
IS - 5
ER -