Combustion and Autowave Chemical Transformations of a Highly Exothermic Mixture of CaCrO4/Al/B
P. A. Miloserdov, V. I. Yukhvid, V. A. Gorshkov, T. I. Ignateva, V. N. Samenova, A. S. Shchukin
Institute of Structural Macrokinetics and Materials Sciences, Chernogolovka, 142432 Russia
Keywords: СВС-металлургия, горение, синтез, керамика, борид хрома, хромат кальция, высококалорийные смеси, SHS metallurgy, combustion synthesis, ceramics, boride chromium, calcium chromate, energetic mixtures
Abstract
The combustion of a highly exothermic mixture of calcium chromate with aluminum and boron has been studied. It has been shown that these mixtures are able to burn in a wide range of ratios of reactants. The autowave chemical conversion is accompanied by the decomposition of calcium chromate, the chemical reaction of the decomposition products with aluminum and boron, the formation of a two-phase melt of the combustion products with its subsequent gravity separation, and crystallization of the layers. Results of the study may beuseful for obtaining chromium borides.
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