Lattice defect behavior of LaNi4.97Sn0.27 during hydrogenation cycles

Kouji Sakaki, Yumiko Nakamura, Yasuharu Shirai, Robert C. Bowman, Etsuo Akiba

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Lattice defect behavior of LaNi4.97Sn0.27 during the hydrogenation cycles has been investigated by in-situ positron lifetime measurement. Mean positron lifetime increased and decreased by each hydrogenation and dehydrogenation, respectively, independently of the hydrogenation cycles. It suggests that lattice defects are introduced by the hydrogenation and removed from the lattice by the dehydrogenation even at below the migration temperature of vacancy in LaNi5. Furthermore, dislocation density and vacancy concentration kept almost constant at the value of around 6 × 109 cm-2 and 10ppm through at least eight hydrogenation/dehydrogenation cycles.

元の言語英語
ページ(範囲)1875-1877
ページ数3
ジャーナルMaterials Transactions
47
発行部数8
DOI
出版物ステータス出版済み - 8 1 2006

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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    Sakaki, K., Nakamura, Y., Shirai, Y., Bowman, R. C., & Akiba, E. (2006). Lattice defect behavior of LaNi4.97Sn0.27 during hydrogenation cycles. Materials Transactions, 47(8), 1875-1877. https://doi.org/10.2320/matertrans.47.1875