Untersuchung der Diffusion von Wasserstoff in Pd- und Pd/Ag-Legierungen mit einer Stromstoß-Methode
Open Access
- 1 October 1970
- journal article
- Published by Walter de Gruyter GmbH in Zeitschrift für Naturforschung A
- Vol. 25 (10) , 1490-1496
- https://doi.org/10.1515/zna-1970-1022
Abstract
Diffusion coefficients of H in Pd and Pd/Ag-alloys were determined at low hydrogen concentration and at temperatures between 0 and 60 °C by a new electrochemical pulse method making use of time-lag-techniques. The preexponential factor D0 decreases slightly with rising silver content (x=weight % Ag/100) : log D0=-2.409-1.0 x. The activation energy runs through a flat minimum at about 15% Ag. Its dependence on the silver content of the alloy 0 ≦ x ⪅ 0.5 can be expressed empirically by E=5750-5285 x+19100 x2 cal/mol.Keywords
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