Abstract
The influence of a temperature gradient on the motion of an interstitial-solute-vacancy pair in a fcc alloy has been analyzed using the "pair association" kinetic theory developed by Lidiard. In the past, an interstitial-solute-vacancy pair mechanism has been used to describe the diffusion of various solutes in the group-IV elements, and this development for the kinetics of the thermomigration of such solute-vacancy pairs can be used for further evaluation of this proposed mechanism for diffusion in these alloys.