Thermal diffusion in concentrated solid solutions
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The kinetic model of thermal diffusion in crystals is considered for a concentrated multicomponent system. The dependence of the heat of transport upon thermodynamic variables introduces corrective terms which are capable of explaining many of the large heats of transport found in the experimental literature. These terms also appear in the diffusion coefficients for substitutional as well as interstitial solutes; the form for the diffusion coefficient would suggest that diagonal terms in the matrix of diffusion coefficients would be larger than off-diagonal terms in agreement with experiment.
KeywordsMetallurgical Transaction Thermodynamic Variable Jump Frequency Interstitial Solute Activation Free Energy
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