Structural, magnetic, electrochemical and hydrogen absorption properties of GdyMg2-yNi4-xAlx compounds with 0.4 < y < 2 and 0 < x < 1.2

Jean Gabriel Roquefere, Bernard Chevalier, Rainer Pöttgen, Naoyoshi Terashita, Kohta Asano, Etsuo Akiba, Jean Louis Bobet

研究成果: ジャーナルへの寄稿学術誌査読

20 被引用数 (Scopus)

抄録

A solid solution with the C15b structure (MgCu4Sn-type) exists as a series from GdNi2 to Gd0.4Mg1.6Ni4 (Gd0.2Mg0.8Ni2). These compounds were successfully elaborated by (i) Mechanical Alloying (MA) and (ii) melting followed by a subsequent annealing. It was also possible to synthesise the solid solution GdMgNi4-xAlx with x up to 1.2. The product is highly dependent on the elaboration route which induces a drastic change in both chemical and physical properties (i.e. magnetism, electrochemistry, and structural disorder). A direct relationship between all these property modifications was established. Finally, it is shown that different compounds have different behaviours towards hydrogen sorption regarding both the hydrogen uptake and the thermodynamic results.

本文言語英語
ページ(範囲)179-187
ページ数9
ジャーナルIntermetallics
16
2
DOI
出版ステータス出版済み - 2月 2008
外部発表はい

!!!All Science Journal Classification (ASJC) codes

  • 化学 (全般)
  • 材料力学
  • 機械工学
  • 金属および合金
  • 材料化学

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