Pitting Corrosion Resistance of Anodized Aluminum-Copper Alloy Processed by Severe Plastic Deformation

DOI Web Site Web Site 3 Citations 34 References
  • Son In-Joon
    Department of Materials Process Engineering, Kyushu University
  • Nakano Hiroaki
    Department of Materials Science & Engineering, Kyushu University
  • Oue Satoshi
    Department of Materials Science & Engineering, Kyushu University
  • Kobayashi Shigeo
    Department of Applied Chemistry and Biochemistry, Kyushu Sangyo University
  • Fukushima Hisaaki
    Department of Materials Science & Engineering, Kyushu University
  • Horita Zenji
    Department of Materials Science & Engineering, Kyushu University

Bibliographic Information

Other Title
  • 強歪加工を施したＡｌ‐Ｃｕ合金の陽極酸化膜の耐孔食性
  • 強ひずみ加工を施したAI-Cu合金の陽極酸化膜の耐孔食性
  • キョウヒズミ カコウ オ ホドコシタ AI Cu ゴウキン ノ ヨウキョク サンカマク ノ タイコウショクセイ

Search this article

Abstract

  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.<br>

Journal

Citations (3)*help

See more

References(34)*help

See more

Related Projects

See more

Keywords

Details 詳細情報について

Report a problem

Back to top