Application of SHS process for fabrication of copper-titanium silicon carbide composite (Cu-Ti3SiC2)

Abstract

The results of the study of possibility of using a simple, energy-saving powder technology, based on the process of self-propagating high-temperature synthesis (SHS) or combustion synthesis, for the single-stage preparation of Cu-Ti3SiC2 composite from relatively inexpensive powders of its constituent elements are presented. Placing the Cu powder briquette between two adjacent charge briquettes 3Ti + 1,25Si + 2C for the synthesis of MAX-phase of Ti3SiC2, it was possible to use a large heat effect of SHS for melting the Cu briquette and infiltration of Ti3SiC2 porous skeleton by Cu melt. For the successful realization of this process, it is necessary to ensure the required fluidity of Cu melt and wetting Ti3SiC2 through a high temperature of the melt and the alloying of the melt with silicon, as well as to ensure the delay in the transfer of the melt into pores of SHS product.