Behavior of tritium permeation induced by water corrosion of alpha iron around room temperature

Teppei Otsuka, Kenichi Hashizume

    研究成果: ジャーナルへの寄稿学術誌査読

    2 被引用数 (Scopus)

    抄録

    In order to understand behaviors of hydrogen uptake and permeation in pure α-iron (αFe) during water corrosion around room temperature, hydrogen permeation experiments for a αFe membrane have been conducted by means of tritium tracer techniques. Hydrogen produced by water corrosion of αFe is trapped and/or blocked in/by product oxide layers to delay hydrogen uptake in αFe for a moment. However, the oxide layers do not work as a sufficient barrier for hydrogen uptake. Some of hydrogen dissolved in αFe could normally diffuse and permeate through the αFe bulk. Assuming hydrogen dissolution at the water/Fe interface proportional to the square root of the hydrogen pressure (Sieverts' law), the partial hydrogen pressure were estimated to be 0.7, 5.0 and 9.5 kPa at 303, 323 and 348 K, respectively.

    本文言語英語
    ページ(範囲)511-514
    ページ数4
    ジャーナルFusion Science and Technology
    67
    3
    DOI
    出版ステータス出版済み - 4月 1 2015

    !!!All Science Journal Classification (ASJC) codes

    • 土木構造工学
    • 核物理学および高エネルギー物理学
    • 原子力エネルギーおよび原子力工学
    • 材料科学(全般)
    • 機械工学

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