Generation and transfer of an electric charge in self-propagating high-temperature synthesis using the Co–S system as an example

Based on experimental studies, it is shown that the propagation of a combustion wave in a Co–S powder mixture is accompanied by a complex of physical phenomena including acoustic noise, generation of the constant, pulse, and variable electromotive force in a frequency range greater than 1 MHz, and superequilibrium emission of electric-charge carriers. The volt-ampere characteristic of the emission current in the combustion wave, which has a negative-resistance site, is obtained. Combustion occurs under conditions of mutual influence of the physical phenomena observed.