Process of making a metal matrix composite (MMC) component

A process for making a metal-matrix composite (MMC) component, comprising the steps of:

• mixing particulate ceramic powder with a liquid carrier, without addition of a binder, to prepare a slip having thixotropic properties;
• introducing the slip into a casting mold of substantially dense consistency;
• subjecting the casting mold to vibrations so as to separate the carrier from the ceramic particles and to allow the carrier to float upon the ceramic particles while at the same time compacting the slip to realize a ceramic preform of porous consistency having pores;
• terminating the exposure of the casting mold to vibrations;
• removing the liquid carrier;
• allowing the preform to solidify in the casting mold, without exposure to any further compaction measures, and maintaining the casting mold in a position of rest;
• pouring matrix metal into the casting mold to fill the pores of the preform;
• and
• placing into the casting mold a porous ceramic body of a porosity which is greater than a porosity of the preform, before introduction of the slip.