Fabrication and hydrogen storage property study of nanostructured Mg-Ni-B ternary alloys

Huaiyu Shao, Kohta Asano, Hirotoshi Enoki, Etsuo Akiba

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

Mg-Ni-B ternary alloys with nanostructure were produced by mechanical alloying method. Alloys with various structures were obtained. X-ray diffraction was used to define the structure and phase information as well as crystalline size of the alloys. Bright-field and dark-field transmission electron microscope (TEM) technique was applied to observe the morphology of the samples. Electron diffraction was used to confirm the structure of the alloys. The hydrogen storage properties of the obtained Mg-Ni-B alloys were studied by high pressure differential scanning calorimetry (DSC) and pressure-composition isotherm (PCT) methods. Body centered cubic (BCC) structure alloys show better hydrogen absorption properties than CsCl and Mg2Ni type structure alloys in this work. Mg48Ni48B4 and Mg50Ni45B5 BCC alloys showed a hydrogen absorption content of 1.93 and 1.94 mass% at 373 K. Substitution or addition of a small amount of B to Mg50Ni50 alloy is effective to improve hydrogen storage properties.

Original languageEnglish
Pages (from-to)409-413
Number of pages5
JournalJournal of Alloys and Compounds
Volume479
Issue number1-2
DOIs
Publication statusPublished - Jun 24 2009

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Ternary alloys
Hydrogen storage
Fabrication
Hydrogen
Mechanical alloying
Electron diffraction
Isotherms
Differential scanning calorimetry
Nanostructures
Substitution reactions
Electron microscopes
Crystalline materials
X ray diffraction
Chemical analysis

All Science Journal Classification (ASJC) codes

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

Cite this

Fabrication and hydrogen storage property study of nanostructured Mg-Ni-B ternary alloys. / Shao, Huaiyu; Asano, Kohta; Enoki, Hirotoshi; Akiba, Etsuo.

In: Journal of Alloys and Compounds, Vol. 479, No. 1-2, 24.06.2009, p. 409-413.

Research output: Contribution to journalArticle

Shao, Huaiyu ; Asano, Kohta ; Enoki, Hirotoshi ; Akiba, Etsuo. / Fabrication and hydrogen storage property study of nanostructured Mg-Ni-B ternary alloys. In: Journal of Alloys and Compounds. 2009 ; Vol. 479, No. 1-2. pp. 409-413.
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