Thermodynamic analysis of obtaining SHScomposite materials based on boron carbide
DOI:
https://doi.org/10.18321/cpc440Keywords:
thermodynamic analysis, self-propagating high-temperature synthesis (SHS), composite material, boron carbide, adiabatic temperatureAbstract
In this work, the probability of obtaining composite materials based on boron carbide by the method of self-propagating high-temperature synthesis (SHS) in the В2О3–Al–С system is investigated. Thermodynamic calculations of SHS processes are carried out in order to determine the combustion temperature under adiabatic conditions, when there is no heat loss and the equilibrium composition of combustion products. Using the FactSage program, thermodynamic calculations of the equilibrium phase composition of the final SHS products and the adiabatic combustion temperature of the В2О3–Al–С system were carried out depending on the initial temperature of the SHS and the initial composition of the components of the systems under study. As a result of the calculations, the optimal conditions for the SHS process were determined to obtain the largest amount of boron carbide in the composite material. Based on the results of thermodynamic analysis, the possibility of obtaining by SHS method of composite materials based on boron carbide and corundum in В2О3–Al–С at an initial temperature of SHS equal to 700 оC was shown.
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