Mechanism of Propagation of the Combustion Front in a Fe_2O_3 + 2Al + 30% Al_2O_3 Mixture

摘要

The results of experiments on the combustion of a powdery Fe_2O_3–Al–Al_2O_3 mixture in an argon flow are reported. The process of combustion is perturbed by a pressure drop across the batch created by evac- uating one of the end faces of the reaction cell. The effects of gasifiable additives (borax and soda) and a pres- sure drop on the combustion characteristics are studied. The results obtained are interpreted within the framework of the convection–conduction theory of combustion of heterogeneous condensed systems.