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Contrary to current opinion, Hägg's rule can be applied in the analysis of the diffusion of 3d and other solutes in isotropic transition-metal host phases such as gamma-U, beta-Zr and Nb if the crystal radii of the host lattice and of the solute atoms are defined properly. A priori, Hägg's rule then constitutes a necessary but not a sufficient condition for interstitial diffusion in these systems. Then the correlation between activation entropy and enthalpy of solute diffusion in the above host phases can be used to identify the Hägg parameters lambda(i) at which interstitial diffusion is observed and lambda is related to the elastic part of the activation enthalpy of interstitial solute diffusion.

Additional information

Authors: BLANK H, JRC Karlsruhe (DE)
Bibliographic Reference: Article: Philosophical Magazine B, Vol 73 (1996) No. 5, pp. 833-844
Record Number: 199611150 / Last updated on: 1996-10-28
Original language: en
Available languages: en
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