P. M. Grigoreva, E. N. Vilchevskaya

INFLUENCE OF DIFFUSION MODELS ON CHEMICAL REACTION FRONT KINETICS

A linear-elastic body is considered, in which a chemical reaction localized at the front is maintained, supported by the diffusion of the gaseous component through the layer of the newly- formed material. The comparative influence of mechanical stresses on the kinetics of the chemical reaction front is studied by taking into account the contribution of stresses to the surface reaction rate through the chemical affinity tensor and to the diffusion process through various stress dependences of the diffusion coefficient. As an example, the propagation of the centrally symmetric and axisymmetric reaction fronts in various boundary-value problems is considered with the use of different diffusion models.

Acknowledgment: The research was supported by the Russian Scientific Foundation, project No. 18-19-00160

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