Titanium-based composite synthesis in the combustion regime

Abstract

the model of composite synthesis on the base of titanium with inclusions of carbides, borides and silicides is analyzed numerically. it was assumed that synthesis is carried out from the mixtures tic , ti-B and ti-si containing the excess of titanium in comparison with stoichiometric relation of components necessary for the formation of tic, tiB and ti5si3. the model is based on the classical ideas of the combustion models with summary reaction. However, it takes into account nonstoichiometric composition of green mixture, dependence of properties on the composition changing during the synthesis and the reaction initiation stage in the igniter. temperature distribution, conversion level, maximal combustion temperature, reaction zone thickness, and the rate of reaction propagation are determined numerically. the results of the product temperature calculation qualitatively agree with experimental data.