Chemical affinity tensor and kinetics of stress-assisted chemical reaction front

Abstract eng:
We develop an approach to studying the influence of stresses and strains on the kinetics of chemical reaction fronts based on the chemical affinity tensor. After the derivation of the expression of the chemical affinity tensor we formulate a kinetic equation for the chemical reaction front propagation in a form of the dependence of the reaction front velocity on the normal component of the chemical affinity tensor. We describe a locking effect – blocking the reaction by mechanical stresses, and construct the forbidden regions formed by strains or stresses at which the chemical reaction cannot go. Finally we present a number of analytical and numerical solutions of boundary-value problems for solids with propagating chemical reaction fronts.

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