Hydrogen Diffusivity and Solubility in Pd–Y Alloys

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  • Yoshinari Osamu
    Department of Materials Science and Engineering, Nagoya Institute of Technology
  • Matsuda Hiroo
    Department of Materials Science and Engineering, Nagoya Institute of Technology
  • Fukuhara Keizo
    Department of Materials Science and Engineering, Nagoya Institute of Technology
  • Tanaka Kazuhide
    Department of Materials Science and Engineering, Nagoya Institute of Technology

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  • Hydrogen Diffusivity and Solubility in
  • Hydrogen Diffusivity and Solubility in Pd–Y Alloys

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Abstract

Hydrogen diffusivity and solubility were measured in Pd containing less than 5 at%Y at room temperature, using an electrolytic method. It is confirmed that the addition of Y increases both the H diffusivity and solubility. The results suggest that Y atoms do not act as trapping centers of H atoms at room temperature. It is considered that the addition of Y lowers the H site energy in Pd and it also lowers the activation energy for H diffusion.

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