Heat content and heat of formation measurements of RNi5 ± x alloys (R ≡ La, Ce, Pr or Nd) and heat balance in a reduction-diffusion process

K. Yamaguchi, D. Y. Kim, M. Ohtsuka, K. Itagaki

研究成果: Article査読

21 被引用数 (Scopus)

抄録

The heat contents of the LaNi5.25, CeNi5.13, PrNi4.65 and NdNi5.85 alloys were measured over the temperature range 800-1400 K using a drop calorimeter. The heat content and heat capacity equations were derived using the Shomate function. The heats of formation of these alloys were determined at 773 K from the heats of dissolution of these compounds and their components in a liquid tin solvent using a Calvet-type solution calorimeter. Heat balance was calculated for a reduction-diffusion process to make the RNi5 powders directly for use as hydrogen storage media by reducing the rare earth resources with metallic calcium, magnesium and lithium.

本文言語English
ページ(範囲)161-168
ページ数8
ジャーナルJournal of Alloys and Compounds
221
1-2
DOI
出版ステータスPublished - 1995 4 15
外部発表はい

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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