Explosive Burning of a Mechanically Activated Al and CuO Thermite Mixture

Alexander Dolgoborodov, Boris Yankovsky, Sergey Ananev, George Valyano and Galina Vakorina
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Alexander Dolgoborodov: Joint Institute for High Temperatures of the Russian Academy of Sciences, Izhorskaya 13 Bd 2, 125412 Moscow, Russia
Boris Yankovsky: Joint Institute for High Temperatures of the Russian Academy of Sciences, Izhorskaya 13 Bd 2, 125412 Moscow, Russia
Sergey Ananev: Joint Institute for High Temperatures of the Russian Academy of Sciences, Izhorskaya 13 Bd 2, 125412 Moscow, Russia
George Valyano: Joint Institute for High Temperatures of the Russian Academy of Sciences, Izhorskaya 13 Bd 2, 125412 Moscow, Russia
Galina Vakorina: Joint Institute for High Temperatures of the Russian Academy of Sciences, Izhorskaya 13 Bd 2, 125412 Moscow, Russia

Energies, 2022, vol. 15, issue 2, 1-13

Abstract: The results of experiments to determine the role of structural schemes for the ignition of a mechanically activated thermite mixture Al–CuO and the formation of its combustion flame are presented. The reaction initiated in the bulk of the experimental assembly transforms into torch combustion in an open space. The dynamics of the volume of the flame reaction region was determined. The stage of flame formation has a stochastic character, determined by the random distribution of the reaction centres in the initial volume of the components. A high-speed camera, a pyrometer and electro contact sensors were used as diagnostic tools. The ultimate goal of the study was to optimize the conditions for the flame formation of this mixture for its effective use with a single ignition of various gas emissions.

Keywords: thermite mixtures; aluminium; copper oxide; mechanical activation; ignition; combustion mechanism; flame dynamics; combustion and burner emissions (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
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