Preliminary study of compatibility of lithium oxide single crystals with nickel foils under electric field

Shoichi Nasu, Shinji Nagata, Sorin Kihara, Katsumi Takahiro, Tatsuo Shikama

Research output: Contribution to journalArticlepeer-review

Abstract

We examined compatibility of lithium oxide (Li2O, tritium breeding materials) single crystals with nickel (Ni) foils by Rutherford backscattering spectroscopy (RBS) with He ions and protons. After heating the samples at 673 K for 3600 s without electric fields, or after applying the electric field of 200 V mm-1 between the Ni contacted surface (positive) and the free back surface (negative) of Li2O crystals at 673 K for 3900 s, any reactions were not observed between the Ni foils and the Li2O crystals. On the other hand, after applying the electric field of 300 V mm-1 at 353 K for 600 s, heavy reactions were observed. That is, lithium and oxygen atoms migrated into the Ni foil, and Ni atoms diffused into the Li2O crystals. In addition, we examined the effect of the reverse electric field on reactions, and found a heavier reaction for the attractive force of lithium ions.

Original languageEnglish
Pages (from-to)236-241
Number of pages6
JournalFuntai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
Volume54
Issue number4
DOIs
Publication statusPublished - 2007 Apr

Keywords

  • Lithium oxide
  • Nickel
  • Rutherford backscattering spectroscopy
  • Solid state reaction
  • Tritium breeding materials

ASJC Scopus subject areas

  • Mechanical Engineering
  • Industrial and Manufacturing Engineering
  • Metals and Alloys
  • Materials Chemistry

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