Numerical simulation of unidirectional infiltration of silicon carbide preforms

A mathematical model of unidirectional infiltration was set up and, the metal infiltration velocity and temperature fields of the metal, preform and composites were calculated using the finite difference method. The metal infiltration velocity has a close relationship with the infiltration time. It is very large in a few seconds after the infiltration beginning, then the velocity keeps almost constant. The temperature field of the composite has proved that metal matrix composites (MMCs) after unidirectional pressure infiltration can solidify from the entrance of the preform to the infiltration front, which is useful for obtaining the MMCs with low porosity and high properties.