Icosahedral hydrides of the Ti45Zr38Ni17-xCox nano-powders

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

研究成果: Article

抄録

In this communication we report the phase transitions associated with a hydrogen uptake in the quasicrystalline Ti45Zr38Ni17-xCox alloys that were prepared by mechanical alloying. The crystal structure evolution of the alloys was characterized by means of the variety of diffraction techniques (X-ray, neutron, and electron) as well as extended X-ray absorption fine structure spectroscopy (EXAFS). That analysis was supported by the results of the thermodynamic measurements, namely differential scanning calorimetry (DSC) and thermal desorption spectroscopy (TDS). According to the neutron diffraction results, the transformation of the amorphous Ti45Zr38Ni17-xCox phases into the quasicrystalline state starts at the temperature of 475°C. At 525°C the icosahedral phase (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). The investigated icosahedral nano-powders exhibit a high capacity for gaseous H2 reaching 2.2 wt.% at elevated temperatures. After a hydrogen uptake, a complex phase constitution including the simple hydrides is evidenced. Although the i-phases form again after hydrogen desorption, they are accompanied by the additional Zr3Co phase.

元の言語English
ページ(範囲)702-706
ページ数5
ジャーナルJournal of Alloys and Compounds
656
DOI
出版物ステータスPublished - 2015 10 9

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Hydrides
Powders
Hydrogen
Thermal desorption spectroscopy
Extended X ray absorption fine structure spectroscopy
Mechanical alloying
Neutron diffraction
Temperature
Differential scanning calorimetry
Desorption
Neutrons
Diffraction
Crystal structure
Phase transitions
Thermodynamics
X rays
Electrons
Communication

ASJC Scopus subject areas

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

これを引用

Zywczak, A., Rusinek, D., Czub, J., Sikora, M., Stepień, J., Gondek, ... Hoser, A. (2015). Icosahedral hydrides of the Ti45Zr38Ni17-xCox nano-powders. Journal of Alloys and Compounds, 656, 702-706. https://doi.org/10.1016/j.jallcom.2015.09.278

Icosahedral hydrides of the Ti45Zr38Ni17-xCox nano-powders. / Zywczak, A.; Rusinek, D.; Czub, J.; Sikora, M.; Stepień, J.; Gondek; Gajewska, M.; Takasaki, Akito; Hoser, A.

:: Journal of Alloys and Compounds, 巻 656, 09.10.2015, p. 702-706.

研究成果: Article

Zywczak, A, Rusinek, D, Czub, J, Sikora, M, Stepień, J, Gondek, Gajewska, M, Takasaki, A & Hoser, A 2015, 'Icosahedral hydrides of the Ti45Zr38Ni17-xCox nano-powders', Journal of Alloys and Compounds, 巻. 656, pp. 702-706. https://doi.org/10.1016/j.jallcom.2015.09.278
Zywczak A, Rusinek D, Czub J, Sikora M, Stepień J, Gondek その他. Icosahedral hydrides of the Ti45Zr38Ni17-xCox nano-powders. Journal of Alloys and Compounds. 2015 10 9;656:702-706. https://doi.org/10.1016/j.jallcom.2015.09.278
Zywczak, A. ; Rusinek, D. ; Czub, J. ; Sikora, M. ; Stepień, J. ; Gondek ; Gajewska, M. ; Takasaki, Akito ; Hoser, A. / Icosahedral hydrides of the Ti45Zr38Ni17-xCox nano-powders. :: Journal of Alloys and Compounds. 2015 ; 巻 656. pp. 702-706.
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AU - Stepień, J.

AU - Gondek,

AU - Gajewska, M.

AU - Takasaki, Akito

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