Effect of oxygen on aluminum corrosion in pure water

Katsuya Ishii, Ryota Ozaki, Kenji Kaneko, Masataka Masuda

    Research output: Contribution to journalArticlepeer-review

    4 Citations (Scopus)

    Abstract

    When aluminum is immersed in pure water, hydrogen evolves at the cathode in pure water where there is no oxygen, although hydrogen dose not evolve in pure water with oxygen present. Based upon the fact, the effect of hydrogen evolved at the cathode on aluminum corrosion was investigated in relation to oxygen concentration in pure water in the present study. The length of incubation period, which is the time from the beginning of the corrosion test to a sharp increase in the corrosion amount, is almost constant regardless of the oxygen concentration. However, the corrosion period which begins right after the incubation period and continues until the saturation point is reached varies depending on the oxygen concentration. When the oxygen concentration is low, the amount of hydrogen at the cathode is large and small pits through the barrier layer spread rapidly over the entire surface, resulting in increase in the corrosion amount. From these results, it is thought that the hydrogen evolved by the cathode reaction greatly affects the deterioration of barrier layer and the aluminum corrosion.

    Original languageEnglish
    Pages (from-to)845-848
    Number of pages4
    JournalNippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals
    Volume70
    Issue number10
    DOIs
    Publication statusPublished - Oct 2006

    All Science Journal Classification (ASJC) codes

    • Condensed Matter Physics
    • Mechanics of Materials
    • Metals and Alloys
    • Materials Chemistry

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