Physical Properties of Ti45Zr38Fe17 Alloy and Its Amorphous Hydride

Antoni Żywczak, Łukasz Gondek, Joanna Czub, Piotr Janusz, Nivas Babu Selvaraj, Akito Takasaki

研究成果: Article査読

抄録

The alloys based on Ti-Zr are considered an excellent candidate for hydrogen storage applications. In this communication, we report the results of Fe substitution for Ni in the well-known Ti45Zr38Ni17 compound. The parent and related compounds can be obtained as amorphous powders, transforming into the quasicrystalline phase (i-phase) after annealing. The amorphous Ti45Zr38Fe17 phase is transformed into the icosahedral quasicrystalline state, and it is a quasi-continuous process. The i-phase is well-developed close to 500C. At higher temperatures, the quasicrystal structure transforms into the other phase: the w-phase (an approximant to the crystalline phase) and another crystal phase with a small addition of the FeZr3 and the Fe2 (ZrTi)3 . The amorphous Ti45Zr38Fe17 phases can be hydrogenated while maintaining the amorphous nature, which constitutes another very fascinating research field for our group. The investigated alloy shows a good capacity for gaseous H2 at level 2.54 wt.% at elevated temperatures. The ferromagnetic signal of the amorphous TiZrFe comes from magnetic nanocrystallites in the amorphous matrix. After heating, the magnetic signal significantly decreases due to the lack of long-range magnetic ordering in the i-phase of the Ti45Zr38Fe17 alloy.

本文言語English
論文番号4236
ジャーナルEnergies
15
12
DOI
出版ステータスPublished - 2022 6月 1

ASJC Scopus subject areas

  • 再生可能エネルギー、持続可能性、環境
  • 建築および建設
  • 燃料技術
  • 工学(その他)
  • エネルギー工学および電力技術
  • エネルギー(その他)
  • 制御と最適化
  • 電子工学および電気工学

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