強ひずみ加工を施したAl-Cu合金の陽極酸化膜の耐孔食性 Pitting Corrosion Resistance of Anodized Aluminum-Copper Alloy Processed by Severe Plastic Deformation

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著者

    • 孫 仁俊 SON In-Joon
    • 九州大学大学院工学府物質プロセス工学専攻 Department of Materials Process Engineering, Kyushu University
    • 中野 博昭 NAKANO Hiroaki
    • 九州大学大学院工学研究院材料工学部門 Department of Materials Science & Engineering, Kyushu University
    • 大上 悟 [他] OUE Satoshi
    • 九州大学大学院工学研究院材料工学部門 Department of Materials Science & Engineering, Kyushu University
    • 堀田 善治 HORITA Zenji
    • 九州大学大学院工学研究院材料工学部門 Department of Materials Science & Engineering, Kyushu University

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 AlCl<sub>3</sub> 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.<br>

収録刊行物

  • 日本金屬學會誌 = Journal of the Japan Institute of Metals  

    日本金屬學會誌 = Journal of the Japan Institute of Metals 72(5), 353-359, 2008-05-01 

    The Japan Institute of Metals

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各種コード

  • NII論文ID(NAID)
    10021150317
  • NII書誌ID(NCID)
    AN00062446
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    00214876
  • NDL 記事登録ID
    9514338
  • NDL 雑誌分類
    ZP41(科学技術--金属工学・鉱山工学)
  • NDL 請求記号
    Z17-314
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
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