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Sub-nano and Nano-structures of Hydrides of LaNi5 and its related Intermetallics

Published online by Cambridge University Press:  26 February 2011

Etsuo Akiba ,
Kouji Sakaki  and
Yumiko Nakanura
Etsuo Akiba
Affiliation:
Energy Technology Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Central 5, 1–1–1 Higashi, Tsukuba, Ibaraki, 305–8565, Japan
Kouji Sakaki
Affiliation:
Energy Technology Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Central 5, 1–1–1 Higashi, Tsukuba, Ibaraki, 305–8565, Japan
Yumiko Nakanura
Affiliation:
Energy Technology Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Central 5, 1–1–1 Higashi, Tsukuba, Ibaraki, 305–8565, Japan
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Abstract

Sub-nano and nano-structures of intermetallics such as LaNi5 and its related alloys were studied by in-situ X-ray and neutron diffraction methods. From the profile shape analysis, changes in lattice strain and crystalline size during hydrogenation/dehydrogenation were estimated, while the crystal (sub-nano) structures were refined by the Rietveld method using diffraction patterns. The crystallite size of the alloys studied did not change during hydrogenation and dehydrogenation. It was found formation of remarkably dense dislocations and vacancies in the lattice of hydrides of LaNi5 and related intermetallics.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 842: Symposium S – Integrative and Interdisciplinary Aspects of Intermetallics , 2004 , S4.1
Copyright
Copyright © Materials Research Society 2005

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References

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