Characterization of a nanocrystalline Mg–Ni alloy processed by high-pressure torsion during hydrogenation and dehydrogenation

Marcell Gajdics, Marco Calizzi, Luca Pasquini, Erhard Schafler, A. Révész

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Ball-milled Mg-Ni powder has been cold-compacted and subsequently processed by severe shear deformation under high-pressure torsion. The effect of high pressure torsion on morphology and microstructure of the disk-shape samples has been characterized by scanning electron microscopy and X-ray diffraction, respectively. In order to achieve partially hydrogenated and dehydrogenated states of deformed samples, the hydrogen uptake or release was interrupted at 25%, 50% and 75% hydrogen contents in a Sieverts' type apparatus. In this paper we present the characterization of the microstructure during a full absorption-desorption cycle of the nanocrystalline Mg–Ni alloy.

Original languageEnglish
Pages (from-to)9803-9809
Number of pages7
JournalInternational Journal of Hydrogen Energy
Volume41
Issue number23
DOIs
Publication statusPublished - Jun 22 2016

Fingerprint

Nanocrystalline alloys
Dehydrogenation
dehydrogenation
Torsional stress
Hydrogenation
hydrogenation
torsion
disks (shapes)
Hydrogen
microstructure
Microstructure
hydrogen
Shear deformation
balls
Desorption
desorption
shear
Powders
X ray diffraction
Scanning electron microscopy

Keywords

  • Absorption
  • Deformation
  • High pressure torsion
  • Hydrogen
  • Magnesium

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology

Cite this

Characterization of a nanocrystalline Mg–Ni alloy processed by high-pressure torsion during hydrogenation and dehydrogenation. / Gajdics, Marcell; Calizzi, Marco; Pasquini, Luca; Schafler, Erhard; Révész, A.

In: International Journal of Hydrogen Energy, Vol. 41, No. 23, 22.06.2016, p. 9803-9809.

Research output: Contribution to journalArticle

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AU - Révész, A.

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