Entropy Production during Inter Diffusion under Internal Stress

Bartek Wierzba (1) , Marek Danielewski (2)

1 Solid State Chemistry
2 Physical Chemistry of Solids

A theory of stress and elastic deformation during interdiffusion is presented. We show its consistency with the general Darken analysis and linear irreversible thermodynamics. Special consideration is given to the local entropy production. We derive the expression for the rate of entropy production during interdiffusion and present the practical computations of the internal energy and entropy densities and the entropy production. It is shown, that the entropy produced by the diffusion of mass is positive and it does not depend on the frame of reference. The paper spans the gap between the Darken method, the linear irreversible thermodynamics and treatments by Larché, Cahn and Stephenson.

Mots clés: Physical Sciences

Domaines: Matière Condensée [cond-mat]

Bartek Wierzba, Marek Danielewski. Entropy Production during Inter Diffusion under Internal Stress. Philosophical Magazine, 2011, ⟨10.1080/14786435.2011.573818⟩. ⟨hal-00691333⟩