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Pulsed-Field-Gradient NMR Studies of Hydrogen Diffusion in Laves-Phase Hydrides

Published online by Cambridge University Press:  10 February 2011

G. Majer
G. Majer*
Affiliation:
Max-Planck-Institut für Metallforschung, Heisenbergstr. 1, D-70569 Stuttgart, Germany, [email protected]
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Abstract

The diffusivities D of hydrogen in cubic Laves-phase hydrides have been measured by means of pulsed-field-gradient nuclear magnetic resonance over wide temperature ranges. A review is given of the diffusion coefficients of hydrogen in ZrCr2Hx, rTi2Hx, ZrV2Hx, ZrMo2Hx. and HfV2Hx. with special emphasis on the variation of D with the hydrogen concentration x. The formation of ordered low-temperature phases in ZrV2Hx results in a substantial reduction of the hydrogen diffusivity. The dependence of D on the lattice parameter of the host compound is considered.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 513: Symposium H – Hydrogen in Semiconductors and Metals , 1998 , 109
Copyright
Copyright © Materials Research Society 1998

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