Structural phase transitions in the Ti45Zr38Ni17-xFex nano-alloys and their deuterides

D. Rusinek, J. Czub, J. Niewolski, Gondek, M. Gajewska, A. Takasaki, A. Hoser, A. Zywczak

研究成果: Article査読

1 被引用数 (Scopus)

抄録

Abstract The mechanically alloyed Ti-Zr-Ni materials are extensively studied due to their promising properties concerning biomedical, electronic or hydrogen related applications (for example the gaseous hydrogen storage and the MNiH batteries). In this paper we address the very crucial issue of the structural properties and transformations of the amorphous and quasicrystalline Ti45Zr38Ni17-xFex (x = 0, 4, 8) and their hydrides. According to the neutron diffraction results, the transformation of the amorphous Ti45Zr38Ni17 phase into the icosahedral quasicrystalline state (the i-phase) is quasi-continuous and starts at the relatively low temperature of 300°C. At 500°C the i-phase is well-developed. At higher temperatures the i-phase transforms into the approximant w-phase and eventually into the cubic phase (the c-phase). Interestingly, the deuterided i-phase exhibits completely different thermal evolution. Namely, this phase decomposes into the simple intermetallic compounds above 625°C. What is worth-mentioning is that the release of deuterium is strictly related to that structural decomposition. The possibility of hydrogenation of the amorphous Ti45Zr38Ni17-xFex phases with maintaining the amorphous nature of the alloys is the other extremely important field of our interest. We established a processing route to meet our goal. Finally, we show that introducing deuterium triggers an exciting phase transition from the deuterided amorphous phase into the unknown before, partially disordered, quasicrystalline-like phase (the glassy quasicrystal) without releasing of deuterium.

本文言語English
論文番号34361
ページ(範囲)90-95
ページ数6
ジャーナルJournal of Alloys and Compounds
646
DOI
出版ステータスPublished - 2015 6 24

ASJC Scopus subject areas

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

フィンガープリント

「Structural phase transitions in the Ti<sub>45</sub>Zr<sub>38</sub>Ni<sub>17-x</sub>Fe<sub>x</sub> nano-alloys and their deuterides」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル