Structural phase transitions in the Ti<inf>45</inf>Zr<inf>38</inf>Ni<inf>17-x</inf>Fe<inf>x</inf> nano-alloys and their deuterides

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

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

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 Ti<inf>45</inf>Zr<inf>38</inf>Ni<inf>17-x</inf>Fe<inf>x</inf> (x = 0, 4, 8) and their hydrides. According to the neutron diffraction results, the transformation of the amorphous Ti<inf>45</inf>Zr<inf>38</inf>Ni<inf>17</inf> 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 Ti<inf>45</inf>Zr<inf>38</inf>Ni<inf>17-x</inf>Fe<inf>x</inf> 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.

Original languageEnglish
Article number34361
Pages (from-to)90-95
Number of pages6
JournalJournal of Alloys and Compounds
Volume646
DOIs
Publication statusPublished - 2015 Jun 24

Fingerprint

Phase transitions
Deuterium
Quasicrystals
Hydrogen storage
Neutron diffraction
Hydrides
Hydrogenation
Intermetallics
Structural properties
Hydrogen
Decomposition
Temperature
Processing

Keywords

  • Amorphous alloys
  • Hydrides
  • Neutron diffraction
  • Quasicrystals
  • X-ray diffraction

ASJC Scopus subject areas

  • Mechanical Engineering
  • Mechanics of Materials
  • Materials Chemistry
  • Metals and Alloys

Cite this

Structural phase transitions in the Ti<inf>45</inf>Zr<inf>38</inf>Ni<inf>17-x</inf>Fe<inf>x</inf> nano-alloys and their deuterides. / Rusinek, D.; Czub, J.; Niewolski, J.; Gondek; Gajewska, M.; Takasaki, Akito; Hoser, A.; Zywczak, A.

In: Journal of Alloys and Compounds, Vol. 646, 34361, 24.06.2015, p. 90-95.

Research output: Contribution to journalArticle

Rusinek, D. ; Czub, J. ; Niewolski, J. ; Gondek ; Gajewska, M. ; Takasaki, Akito ; Hoser, A. ; Zywczak, A. / Structural phase transitions in the Ti<inf>45</inf>Zr<inf>38</inf>Ni<inf>17-x</inf>Fe<inf>x</inf> nano-alloys and their deuterides. In: Journal of Alloys and Compounds. 2015 ; Vol. 646. pp. 90-95.
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AU - Rusinek, D.

AU - Czub, J.

AU - Niewolski, J.

AU - Gondek,

AU - Gajewska, M.

AU - Takasaki, Akito

AU - Hoser, A.

AU - Zywczak, A.

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N2 - 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.

AB - 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.

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KW - Neutron diffraction

KW - Quasicrystals

KW - X-ray diffraction

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