Combustion of Titanium Oxide Based Thermite Systems with a Complex Reducing Agent and Energy Additive under the Influence of Overload
V. I. Yukhvid, D. E. Andreev, D. M. Ikornikov, V. N. Sanin, N. V. Sachkova, I. D. Kovalev
Merzhanov Institute of Structural Macrokinetics and Materials Science, Russian Academy of Sciences, Chernogolovka, 142432 Russia
Keywords: композиционный материал, комплексный восстановитель, базовый состав, энергетический состав, флюс, перегрузка, compositional material, complex reducing agent, base composition, energy composition, fluxing agent, overload
Abstract
The laws and mechanism of combustion of TiO2 based termite systems with a complex reducing agent (Al and Ca) under the influence of overload are revealed. The termite system includes a basic composition whose combustion products are target elements (Ti, Al, Nb, and Cr) and a high-energy additive (CaO2, Al, and Ca) for realizing a high combustion temperature. With the introduction of an energy additive, the system acquires the ability to burn, and the combustion products (Ti x Al y and oxide solutions Al2O3 and CaO) are capable of melting with a sufficient content of the additive. With an increase in the proportion of Ca in the base mixture composition, the burning rate drops, and the reduction completeness of the target oxides increases. With an optimal ratio of Ca and Al in the mixture, the yield of the target elements in an ingot is close to the calculated value
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