Hydrogen absorption in an icosahedral ZnMgY alloy

A. P. Tsai, A. Niikura, K. Aoki, T. Masumoto

研究成果: Article査読

6 被引用数 (Scopus)

抄録

Hydrogen absorption in a stable icosahedral (i-) Zn50Mg42Y8 alloy has been studied by X-ray diffraction, transmission electron microscopy and differential scanning calorimetry. The i-phase decomposed to a hexagonal Zn2Mg Laves phase, YH3 and MgH2 after hydrogenation under 3 MPa hydrogen pressure at 573 K for 259.2 ks. Two stages of hydrogenation for the i-phase were identified; i-ZnMgY+xH2→i-ZnMgYH2x in the initial stage and then i-ZnMgYH2x+H2→Zn2Mg+YH 2+MgH2. DSC curve of the fully hydrogenated (3 MPa, 573 K, 259.2 ks) sample revealed an endothermic peak around 730 K corresponding to the hydrogen desorption. The transformations between the icosahedral and crystalline phases due to hydrogen absorption and desorption are reversible.

本文言語English
ページ(範囲)90-93
ページ数4
ジャーナルJournal of Alloys and Compounds
253-254
DOI
出版ステータスPublished - 1997 5 20
外部発表はい

ASJC Scopus subject areas

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

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