Effect of equal-channel angular pressing on the pitting corrosion resistance of Al alloy

In Joon Son, Hiroaki Nakano, Satoshi Oue, Shigeo Kobayashi, Hisaaki Fukushima, Zenji Horita

    研究成果: Chapter in Book/Report/Conference proceedingConference contribution

    4 被引用数 (Scopus)

    抄録

    The effect of equal-channel angular pressing (ECAP) on the pitting corrosion resistance of Al and Al-Mg alloy was investigated by means of polarization curves in solutions containing 300 ppm of Cl-1 and by surface analysis. The potentials for pitting corrosion of Al and Al-Mg alloy were evidently shifted to the noble direction by using the ECAP process, indicating that this process improves resistance to pitting corrosion. This increase in resistance seems to be attributable to the increase in formation rate of Al oxide films due to the increase in grain boundary with ECAP. The pitting corrosion resistance of Al and Al-Mg alloy anodized galvanostatically in H2SO4 solution after ECAP was also investigated using electrochemical techniques. The pitting corrosion resistance of Al and Al-Mg alloy was remarkably improved by anodizing. However, the pitting corrosion resistance of anodized Al-Mg alloy was better without ECAP than with ECAP.

    本文言語英語
    ホスト出版物のタイトルNanomaterials by Severe Plastic Deformation, NanoSPD3 - Proceedings of the 3rd International Conference on Nanomaterials by Severe Plastics Deformation
    ページ487-492
    ページ数6
    出版ステータス出版済み - 12 1 2006
    イベント3rd International Conference on Nanomaterials by Severe Plastics Deformation, NanoSPD3 - Fukuoka, 日本
    継続期間: 9 22 20059 26 2005

    出版物シリーズ

    名前Materials Science Forum
    503-504
    ISSN(印刷版)0255-5476

    その他

    その他3rd International Conference on Nanomaterials by Severe Plastics Deformation, NanoSPD3
    Country日本
    CityFukuoka
    Period9/22/059/26/05

    All Science Journal Classification (ASJC) codes

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

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