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Transport mechanism of hydrogen through oxide film formed on zircaloy-4

  • Nuclear Energy
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Abstract

The diffusion behavior of hydrogen in the oxide films of zircaloy-4 specimens containing different size of Zr(Fe,Cr)2 precipitates was examined. In the case of the specimen containing fine precipitates, hydrogen diffused uniformly through the zirconium oxide phase. The diffusion coefficient was 2·10−21 m2·s−1 at room temperature and 6·10−19 m2·s−1 at 673 K. The transport rate of hydrogen in the oxide film of the specimen containing coarse precipitates was significantly higher than that of the specimen containing fine ones at both room temperature and 673 K.

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Authors and Affiliations

  1. Department of Nuclear Engineering, Faculty of Engineering, Kyushu University, 812-8581, Fukuoka, Japan

    Y. Hatano, R. Hitaka & M. Sugisaki

  2. Technical Development Department, Nuclear Fuel Industries, Ltd., 950 Ohaza-noda, Kumatori-cho, 590-0481, Sennan-gun, Osaka, Japan

    M. Hayashi

Authors
  1. Y. Hatano
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  2. R. Hitaka
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  3. M. Sugisaki
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  4. M. Hayashi
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Correspondence to Y. Hatano.

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Hatano, Y., Hitaka, R., Sugisaki, M. et al. Transport mechanism of hydrogen through oxide film formed on zircaloy-4. J Radioanal Nucl Chem 239, 445–448 (1999). https://doi.org/10.1007/BF02349048

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  • DOI: https://doi.org/10.1007/BF02349048

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