Hydrogen absorption properties of amorphous and crystalline la-ni-b melt-spun ribbons

Yoshiaki Ohno, Naoto Sasaki, Hajime Nakamura, Hitoshi Takamura, Terumi Tanaka, Motofumi Homma, Masuo Okada

Research output: Contribution to journalArticle

Abstract

The possibility of formation of amorphous phase in La-Ni-B system by melt-spun technique has been investigated. It is found that the amorphous phase was formed in a relatively wide compositional range and composition forming amorphous phase nearest LaNis compound is LaNiB. The PCT curves of the amorphous ribbons neither have plateau pressure nor almost absorb hydrogen. In addition LaNi64 B1. 2 ribbons start to absorb hydrogens after crystallizing at 1073K. The amount of absorbed hydrogen is about 0. 7mass% at 2. 0MPa, which is almost half of that of the LaNis compound. However, after 30 hydride-dehydride cycle test, crystallized LaNi 6. 481. 2 ribbons show less degradation in comparison with LaNis alloys.

Original languageEnglish
Pages (from-to)835-838
Number of pages4
JournalMaterials Transactions, JIM
Volume37
Issue number4
DOIs
Publication statusPublished - 1996 Jan 1

Keywords

  • Crystallization
  • Hydrogen absorption properties
  • La-ni-b amorphous alloys
  • Melt-spun technique

ASJC Scopus subject areas

  • Engineering(all)

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