表面と真空
Online ISSN : 2433-5843
Print ISSN : 2433-5835
64 巻, 12 号
特集「界面におけるエネルギー変換と輸送」
選択された号の論文の10件中1~10を表示しています
巻頭言
特集「界面におけるエネルギー変換と輸送」
研究紹介
  • 板倉 明子, 村瀬 義治, 矢ヶ部 太郎, 宮内 直弥, 北島 正弘, 青柳 里果
    原稿種別: 研究紹介
    2021 年 64 巻 12 号 p. 568-574
    発行日: 2021/12/10
    公開日: 2021/12/10
    ジャーナル 認証あり

    One of the biggest issues in the hydrogen economy is “hydrogen embrittlement” of metal induced by hydrogen entering and diffusing into the material. Hydrogen diffusion in metallic materials is difficult to grasp owing to the non-uniform compositions and structures of metal. Here a time-resolved “operando hydrogen microscope” was used to interpret local diffusion behaviour of hydrogen in the microstructure of a stainless steel with austenite and martensite structures. The martensite/austenite ratios differed in each local region of the sample. The path of hydrogen permeation was inferred from the time evolution of hydrogen permeation in several regions. We proposed a model of hydrogen diffusion in a dual-structure material and verified the validity of the model by simulations.

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