Superadiabatic Regime of the Thermal Explosion in a Mechanically Activated Mixture of Tungsten with Carbon Black
M. A. Korchagin1,2, N. V. Bulina1
1Institute of Solid State Chemistry and Mechanochemistry, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630128 Russia
2Tomsk State University, Tomsk, 634050 Russia
Keywords: тепловой взрыв, механическая активация, карбид вольфрама, thermal explosion, mechanical activation, tungsten carbide
Abstract
A superadiabatic regime of the thermal explosion in mechanically activated stoichiometric mixtures of tungsten and carbon black is obtained. Regimes of preliminary mechanical activation of mixtures and the subsequent thermal explosion that allow obtaining a single-phase carbide WC with a submicron grain size are determined. The mechanical energy accumulated in the sample as a result of preliminary activation is estimated. Results of the x-ray diffraction analysis and electron microscopy of mechanically activated samples and thermal explosion products are reported.
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