Electrothermal Explosion of a Titanium - Soot Mixture under Quasistatic Compression. I. Thermal and Electric Parameters
V. A. Shcherbakov, A. V. Shcherbakov, S. A. Bostandzhiyan
Erzhanov Institute of Structural Macrokinetics and Materials Science, Russian Academy of Sciences, Chernogolovka, 142432 Russia
Keywords: электротепловой взрыв, кинетика высокотемпературного взаимодействия, карбид титана, electrothermal explosion, high-temperature interaction kinetics, titanium carbide
Abstract
The study of an electrothermal explosion (ETE) of a titanium - soot mixture under quasistatic compression is described. Experimental dependences of thermal and electric parameters of the ETE on the power of electric heating are obtained. It is shown that the heating rate of a reacting mixture significantly affects the ignition temperature and maximum temperature of the ETE. It is determined that, at the stage of pre-explosion heating, the electric resistance of the mixture decreases by 90-95%, and the rate of the temperature rise during a thermal explosion is independent of the heating rate of the mixture. A technique for determining the ignition time and temperature, based on measuring the thermal and electric parameters of the ETE. Liquid-phase and solid-phase interactions in the titanium - soot mixture powders are discussed.
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