MODELING AND EXPERIMENTAL STUDIES OF THE CHEMICAL VAPOR INFILTRATION PROCESS OF TUNGSTEN SELF-COMPOSITES

The numerical modeling using the COMSOL Multiphysics software of the process of chemical vapor infiltration of tungsten powder in order to establish the dependences between the residual porosity of the self-composite and the synthesis parameters was carried out. The influence of the parameters of the chemical vapor infiltration process of tungsten powder on the depth of its impregnation and the density of the resulting selfcomposites was experimentally studied also. It has been established that the main factor determining the maximum depth of infiltration is the rate of deposition of tungsten from the gas phase.