DIFFUSION OF H IN A TANB ALLOY

Authors
COLUZZI B SOBHA B BISCARINI A MAZZOLAI FM COSTA C BIRNBAUM HK
Citation
B. Coluzzi et al., DIFFUSION OF H IN A TANB ALLOY, Zeitschrift für physikalische Chemie, 181, 1993, pp. 111-117
Citations number
25
Categorie Soggetti
Chemistry Physical","Physics, Atomic, Molecular & Chemical
Journal title
Zeitschrift für physikalische Chemie → ACNP
ISSN journal
09429352
Volume
181
Year of publication
1993
Part
1-2
Pages
111 - 117
Database
ISI
SICI code
0942-9352(1993)181:<111:DOHIAT>2.0.ZU;2-V
Abstract
Hydrogen mobility has been investigated between 125 and 415 K in a Ta7 5Nb25 alloy with the use of the Gorsky relaxation technique. The macro scopic diffusion coefficient, D(T) shows an exponential temperature de pendence, contrary to what happens in Ta and Nb. This different behavi our of D(T) in the alloy is attributed to a reduced tunnelling rate be tween ground states, resulting from inequalities among the potential w ells at interstitial sites.