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Elastic stress in composite FeTi hydrogen storage materials

Published online by Cambridge University Press:  31 January 2011

P. Tessier ,
R. Schulz  and
J. O. Ström-Olsen
P. Tessier
Affiliation:
Centre for the Physics of Materials, Department of Physics, McGill University, 3600 University Street, Montréal, Québec, H3A 2T8, Canada
R. Schulz
Affiliation:
Technologie des matériaux, IREQ–Institut de recherche d'Hydro-Québec, 1800 boul. Lionel-Boulet, Varennes, Québec, J3X 1S1, Canada
J. O. Ström-Olsen
Affiliation:
Centre for the Physics of Materials, Department of Physics, McGill University, 3600 University Street, Montréal, Québec, H3A 2T8, Canada
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Abstract

A simple model of the elastic stress in a composite hydrogen absorbing material is developed to account for the hydrogen storage properties of nanocrystalline FeTi with a network of intergranular phase having a wide storage site energy distribution. The model accounts for the equilibrium properties of nanocrystalline FeTi hydrogen absorbers made by ball-milling such as the narrowing of the miscibility gap and changes in plateau pressure. A second model is proposed for disconnected inclusions of the second phase. The effect of chemical disorder is also briefly examined.

Type
Articles
Information
Journal of Materials Research , Volume 13 , Issue 6 , June 1998 , pp. 1538 - 1547
Copyright
Copyright © Materials Research Society 1998

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References

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