On the Theory of Combustion and Synthesis of Composite Materials in the Field of Mass Forces
V. G. Prokof'ev1, V. K. Smolyakov2
1Tomsk State University, Tomsk, 634050 Russia
2Tomsk Scientific Center, Siberian Branch, Russian Academy of Sciences, Tomsk, 634021 Russia
Keywords: self-propagating high-temperature synthesis, gravitational overload, melting, crystallization, combustion front, porous medium, impregnation
Abstract
The formation of a composite material during combustion of a two-layer sample in a centrifugal device was studied by mathematical modeling. The liquid combustion products of the upper layer flow into the lower porous layer under the action of the centrifugal force and initiate its combustion to form a composite material. The critical conditions for the passage of the combustion wave from the upper to the lower layer of the sample are determined depending on the gravitational overload and initial porosity. Dependences of the burning velocity and the impregnation depth of the lower layer on its porosity and overload are obtained.
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