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

Research output: Contribution to journalArticle

Abstract

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.

Original languageEnglish
Pages (from-to)702-706
Number of pages5
JournalJournal of Alloys and Compounds
Volume656
DOIs
Publication statusPublished - 2015 Oct 9

Fingerprint

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

Keywords

  • Hydrides
  • Phase transitions
  • Quasicrystalline alloys
  • Structural properties

ASJC Scopus subject areas

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

Cite this

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.

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

Research output: Contribution to journalArticle

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, vol. 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 et al. Icosahedral hydrides of the Ti45Zr38Ni17-xCox nano-powders. Journal of Alloys and Compounds. 2015 Oct 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. In: Journal of Alloys and Compounds. 2015 ; Vol. 656. pp. 702-706.
@article{0582a490a20d4ed7a2b5f83296409770,
title = "Icosahedral hydrides of the Ti45Zr38Ni17-xCox nano-powders",
abstract = "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.",
keywords = "Hydrides, Phase transitions, Quasicrystalline alloys, Structural properties",
author = "A. Zywczak and D. Rusinek and J. Czub and M. Sikora and J. Stepień and Gondek and M. Gajewska and Akito Takasaki and A. Hoser",
year = "2015",
month = "10",
day = "9",
doi = "10.1016/j.jallcom.2015.09.278",
language = "English",
volume = "656",
pages = "702--706",
journal = "Journal of Alloys and Compounds",
issn = "0925-8388",
publisher = "Elsevier BV",

}

TY - JOUR

T1 - Icosahedral hydrides of the Ti45Zr38Ni17-xCox nano-powders

AU - Zywczak, A.

AU - Rusinek, D.

AU - Czub, J.

AU - Sikora, M.

AU - Stepień, J.

AU - Gondek,

AU - Gajewska, M.

AU - Takasaki, Akito

AU - Hoser, A.

PY - 2015/10/9

Y1 - 2015/10/9

N2 - 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.

AB - 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.

KW - Hydrides

KW - Phase transitions

KW - Quasicrystalline alloys

KW - Structural properties

UR - http://www.scopus.com/inward/record.url?scp=84945219354&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84945219354&partnerID=8YFLogxK

U2 - 10.1016/j.jallcom.2015.09.278

DO - 10.1016/j.jallcom.2015.09.278

M3 - Article

AN - SCOPUS:84945219354

VL - 656

SP - 702

EP - 706

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

SN - 0925-8388

ER -