The nanostructure and hydrogenation reaction of Mg50Co 50 BCC alloy prepared by ball-milling

Junko Matsuda, H. Shao, Y. Nakamura, E. Akiba

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

Mg50Co50 alloy before and after hydrogenation was investigated by means of transmission electron microscopy (TEM). Mg 50Co50 alloy before hydrogenation was found to contain crystals not larger than 5 nm in size. Selected-area electron diffraction patterns (SAEDPs) revealed that these nanocrystals have a body-centered cubic (BCC) structure with a lattice parameter of about 0.3 nm. Distribution of Mg and Co elements in the Mg50Co50 alloy was uniform, indicated by energy dispersive x-ray spectroscopy (EDS) analysis. Crystallization and decomposition occurred in the Mg50Co50 alloy during hydrogenation. A large number of crystals larger than 10 nm were observed in the hydrogenated sample. The SAEDPs showed polycrystalline rings corresponding to the BCC phase and the Co metal phase. The existence of Mg-rich Mg-Co crystals and Co particles was also confirmed by TEM-EDS analysis.

Original languageEnglish
Article number204015
JournalNanotechnology
Volume20
Issue number20
DOIs
Publication statusPublished - May 20 2009

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Ball milling
Hydrogenation
Nanostructures
Electron diffraction
Diffraction patterns
Crystals
Energy dispersive spectroscopy
Transmission electron microscopy
Crystallization
Nanocrystals
Lattice constants
Metals
Spectroscopy
Decomposition
X rays

All Science Journal Classification (ASJC) codes

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering
  • Electrical and Electronic Engineering

Cite this

The nanostructure and hydrogenation reaction of Mg50Co 50 BCC alloy prepared by ball-milling. / Matsuda, Junko; Shao, H.; Nakamura, Y.; Akiba, E.

In: Nanotechnology, Vol. 20, No. 20, 204015, 20.05.2009.

Research output: Contribution to journalArticle

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