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Reaction Mechanism Study of Chemical Transformations in Combustion of MoO3/TiO2/Al/Si Mixtures of Termite Type

  • Combustion, Explosion, and Shock Waves
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Abstract

In this paper, we studied the reaction mechanism of chemical transformations of the initial components in the combustion wave of MoO3/TiO2/Al/Si mixtures of the thermite type in the synthesis of molded molybdenum disilicide (MoSi2) and binary molybdenum titanium silicates ((MoTi)Si2). Syntheses were carried out in a high-temperature synthesis reactor at an initial argon pressure of P0 = 5 MPa. The effect of the ratio of initial reagents and geometric factors on the laws of synthesis of these materials was experimentally studied. The intervals of the component ratios, at which molybdenum and titanium silicides can be synthesized with specified compositions, are determined. We carried out experiments on stop** the combustion front. The chemical transformation of the components of the initial MoO3/TiO2/Al/Si mixtures in the combustion wave is shown to proceed in stages, and chemical reactions can be considered as chemically conjugated processes. The obtained results provide the scientific basis for the creation of promising molded silicide ceramics with high performance properties.

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Authors and Affiliations

  1. Institute of Structural Macrokinetics and Materials Science, Russian Academy of Sciences, Chernogolovka, 142432, Russia

    V. A. Gorshkov, P. A. Miloserdov & N. V. Sachkova

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  1. V. A. Gorshkov
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  2. P. A. Miloserdov
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  3. N. V. Sachkova
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Correspondence to V. A. Gorshkov.

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Gorshkov, V.A., Miloserdov, P.A. & Sachkova, N.V. Reaction Mechanism Study of Chemical Transformations in Combustion of MoO3/TiO2/Al/Si Mixtures of Termite Type. Russ. J. Phys. Chem. B 13, 112–118 (2019). https://doi.org/10.1134/S1990793119010226

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  • DOI: https://doi.org/10.1134/S1990793119010226

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