SPECIFIC FEATURES OF THE SYNTHESIS OF CERAMIC-METAL MATERIALS IN AN UNSTEADY COMBUSTION REGIME

A mathematical model has been constructed and investigated by numerical methods for unsteady gasless combustion of a binary mixture under the conditions of thermocapillary fl ow of the melt of one of the components. Various unsteady regimes have been identifi ed for the propagation of a synthesis wave depending on mass concentrations of components and the initial porosity of the mixture. An investigation has been made into the process of forming the macrostructure of synthesis products in a self-sustained oscillating regime of combustion. A possibility in principle has been shown for combustion of mixtures with excess of a low-melting component at a higher rate than in combustion of a mixture of a stoichiometric composition.
   
Author:  O. V. Lapshin ,  V. A. Prokofiev
Keywords:  reagent melting, thermocapillary convection, conductive and convective combustion regimes, numerical modeling
Page:  581