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Effect of Heat Treatment on Properties of Ti-Mn Based Laves Phase Hydrogen Storage Alloys

Published online by Cambridge University Press:  26 February 2011

Jang Lijun ,
Tu Hailing ,
Chen Yi ,
Huang zhuo  and
Zhan Feng
Jang Lijun
Affiliation:
General Research Institute for Non-ferrous Metals, Beijing 100088, China
Tu Hailing
Affiliation:
General Research Institute for Non-ferrous Metals, Beijing 100088, China
Chen Yi
Affiliation:
General Research Institute for Non-ferrous Metals, Beijing 100088, China
Huang zhuo
Affiliation:
General Research Institute for Non-ferrous Metals, Beijing 100088, China
Zhan Feng
Affiliation:
General Research Institute for Non-ferrous Metals, Beijing 100088, China
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Abstract

Effect of heat treatment on the properties and microstructure of non-stoichiometric Ti-Mn based hydrogen storage alloys were investigated. The results were presented that the hydrogen storage capacity was increased and the width of P-C-T Plateau extended, but the slope of plateau increased after heat treatment. Through SEM, EDS and XRD analysis, it was found that the crystal parameters and cell volume was increased, meanwhile the composition homogeneity effectively enhanced and the content of C15 phase decreased after heat treatment. The accretion of slope of plateau would be related to the ratio of valence electron/atom of the alloys.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 801: Symposium BB – Materials and Technologies for a Hydrogen Economy , 2003 , BB3.7
Copyright
Copyright © Materials Research Society 2004

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