Electrochemical formation and phase control of Pr-Ni alloys in a molten LiCl-KCl-PrCl3 system

Toshiyuki Nohira, Hiroyuki Kambara, Koji Amezawa, Yasuhiko Ito

研究成果: Article査読

63 被引用数 (Scopus)

抄録

The electrochemical formation of Pr-Ni alloys was investigated in a molten LiCl-KCl-PrCl3 (0.50 mol %) system at 723 K. A coherent and dense PrNi2 film was rapidly formed on a Ni electrode by potentiostatic electrolysis at 0.50 V. When a thin Ni electrode (50 μm) was used, PrNi was formed at 0.50 V after the whole electrode became PrNi2. The formed PrNi2 electrodes were transformed to other phases, i.e., PrNi 3, Pr2Ni7, PrNi5, and Ni, by electrochemical displantation. The formation reactions of the alloys and the corresponding equilibrium potentials were clarified. From morphological and crystallographic investigations using transmission electron microscopy and electron diffraction, it has been suggested that the rapid PrNi2 formation is due to the high Pr diffusivity in and near the grain boundaries.

本文言語English
ジャーナルJournal of the Electrochemical Society
152
4
DOI
出版ステータスPublished - 2005 5月 23
外部発表はい

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 再生可能エネルギー、持続可能性、環境
  • 表面、皮膜および薄膜
  • 電気化学
  • 材料化学

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