The effect of hydrogen charging on Ln-based amorphous materials

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

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Author(s)

  • C. P. Chuang
  • J. H. Huang
  • W. Dmowski
  • P. K. Liaw
  • R. Li
  • T. Zhang

Detail(s)

Original languageEnglish
Article number241901
Journal / PublicationApplied Physics Letters
Volume95
Issue number24
Publication statusPublished - 14 Dec 2009
Externally publishedYes

Link(s)

DOI

DOI
Check@CityULib
Link to Scopus https://www.scopus.com/record/display.uri?eid=2-s2.0-77956166747&origin=recordpage
Permanent Link https://scholars.cityu.edu.hk/en/publications/publication(b25e2550-bf1a-4502-a51e-a18b67e1fef1).html

Abstract

In present work, the effects of hydrogen charging on Ln-based (Ln=La,Ce) bulk-metallic glasses (BMG) are studied. The (La0.5 Ce0.5) 65 Al10 Co25 were charged with hydrogen by an electrochemical method in an alkali solution. The hydrogen concentration in the sample after a 36 h charge can reach as high as 1286 w-ppm. With the presence of hydrogen atoms, the hardness of specimen increased by 80% compared to the as-cast samples. The structural evolution of the amorphous matrix due to the hydrogen-uptake process was investigated by the high-energy x-ray scattering technique. The sample surface was crystallized after hydrogen charging. X-ray diffraction measurements revealed broad crystalline peaks superimposed on an amorphous-scattering pattern. The crystalline phase grew from the surface to at least one hundred microns deep into the amorphous matrix. The atomic arrangements of both amorphous and crystalline phases were characterized by the atomic pair-distribution function. © 2009 American Institute of Physics.

Research Area(s)

Bibliographic Note

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Publication fingerprints text

100
hydrogen INIS
100
Amorphous Matrix Engineering
100
Crystalline Phase Engineering
100
Hydrogen Physics
100
Amorphous Material Physics
100
Surface (Surface Sc... Material Science
100
Amorphous Materials Keyphrases
100
Hydrogen Charging Keyphrases
50
Surface Engineering
50
Ray Diffraction Engineering
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Citation Format(s)

[ RIS ] [ BibTeX ]
The effect of hydrogen charging on Ln-based amorphous materials. / Chuang, C. P.; Huang, J. H.; Dmowski, W. et al.
In: Applied Physics Letters, Vol. 95, No. 24, 241901, 14.12.2009.

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review