Measurement of thermal electromotive force and determination of combustion parameters of a mixture of $5\mathrm{Ti}+3\mathrm{Si}$ under quasi-isostatic compression

This paper presents experimental dependences of the temperature, thermo-emf, speed and width of the combustion wave of a heterogeneous mixture of $5\mathrm{Ti}+3\mathrm{Si}$ on the pressure of quasi-isostatic compression. Combustion parameters are calculated from measurements of the temperature gradient and the difference between the electrical potentials in the combustion wave. It is shown that under quasi-isostatic compression conditions, the maximum burning rate is $90$ mm/s and the width of the combustion wave is $10$ mm. It is found that the voltage-temperature characteristic of combustion of a heterogeneous mixture of $5\mathrm{Ti}+3\mathrm{Si}$ has a hysteresis shape. The cause of the hysteresis related to a change in the bulk concentration of electric charge carriers in the combustion wave is discussed.