LIMITS OF THE SELF-PROPAGATING HIGH-TEMPERATURE SYNTHESIS WAVE-PROPAGATION IN EUTECTIC COMPOSITE-MATERIALS

Phaseformation during the self-propagating high-temperature synthesis in the Ti-C M (M = Ni, Co, Cr) eutectic-type ternary systems with and without preheating has been studied. It was found that the synthesis p roceeds via origination of quasi-binary TiC-M eutectics, the principle reaction being that of TiC formation. The dependence of the combustio n temperature on the preheating temperature and the initial charge com position has been evaluated by thermodynamic analysis.