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

This paper presents experimental dependences of the temperature, thermal electromotive force, velocity, and width of the combustion wave of a heterogeneous mixture of 5Ti + 3Si on the quasi-isostatic compression pressure. Combustion parameters are calculated from the results of measurements of the temperature gradient and the electrical potential difference 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 5Ti + 3Si 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.