Synthesis and Hydrogenation of the Ti 45−x V x Zr 38 Ni 17 (5 ≤ x ≤ 40) Mechanically Alloyed Materials

Joanna Czub (), Akito Takasaki, Andreas Hoser, Manfred Reehuis and Łukasz Gondek
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Joanna Czub: Faculty of Physics and Applied Computer Science, AGH University of Krakow, Mickiewicza 30, 30-059 Krakow, Poland
Akito Takasaki: Department of Engineering Science and Mechanics, Shibaura Institute of Technology, Toyosu, Kotoku, Tokyo 135-8548, Japan
Andreas Hoser: Helmholtz-Zentrum Berlin, Hahn-Meitner-Platz 1, 14109 Berlin, Germany
Manfred Reehuis: Helmholtz-Zentrum Berlin, Hahn-Meitner-Platz 1, 14109 Berlin, Germany
Łukasz Gondek: Faculty of Physics and Applied Computer Science, AGH University of Krakow, Mickiewicza 30, 30-059 Krakow, Poland

Energies, 2023, vol. 16, issue 16, 1-11

Abstract: The mechanically alloyed amorphous alloys of the Ti 45 Zr 38 Ni 17 composition are known for their ability to form a quasicrystalline state after thermal treatment. It is also known that the amorphous and quasicrystal alloys belonging to the Ti 45 Zr 38 Ni 17 family are able to store hydrogen and yield gravimetric densities above 2 wt.%. In this contribution, we report the results of research on the Ti 45 Zr 38 Ni 17 system with vanadium doped instead of titanium. We found that the amorphous samples with moderate doping (x < 20) show the ability to absorb hydrogen while maintaining the amorphous state and they transform into the novel glassy-quasicrystal phase during annealing. Those materials with higher vanadium concentrations do not form entirely amorphous structures. However, they still can absorb hydrogen easily. It was also confirmed that the in situ hydrogenation of the amorphous alloys is a straightforward process without decomposition of the alloy. In this process, hydrogen does not attach to any particular constituent of the alloy, which would lead to the formation of simple hydrides or nanoclusters. Therefore, we were able to confirm the fully amorphous nature of the deuterides/hydrides of the Ti 45−x V x Zr 38 Ni 17 with moderate V doping.

Keywords: hydrogen-storage materials; amorphous alloys; quasicrystalline alloys; mechanical alloying; neutron diffraction; scanning electron microscopy (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
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