Investigation of the Wave Propagation Model of a Solid-Phase Exothermic Reaction in a Three-component Powder Mixture

The model of the synthesis of composite combustion in a three-component system Ti-C-Al is proposed. A complex kinetic scheme of the synthesis process, taking into account the change in porosity and the dependence of the effective properties on the composition and structure of the composite was considered. The thermokinetic approach considering the diffusion processes leading to the retardation of the reaction by a layer of product in formally kinetic laws of the reaction was used in the model. Calculation showed that increase of the initial temperature of the reaction mixture from 300 to 500 K decreases the concentration of the Ti2AlC phase and mass fraction of the Ti3AlC2 and TiC phases, regardless of the composition of the initial powder mixture.