Experimental Verification of the Mechanism of Formation of Condensed Products from a Powder Mixture of Ti–B–TiH2 in the Course of Self-Propagating High-Temperature Synthesis

The features of self-propagating high-temperature synthesis (SHS) in combustion and electrothermal explosion modes from a powder mixture of Ti + B + 10 wt % TiH2 were experimentally investigated. The type of mechanism for the formation of condensed products was determined for each mode. It was found that, in the SHS process for this composition, regardless of the synthesis mode, an equilibrium mechanism is realized. A comparison of the phase composition of products for the two modes was conducted. It was experimentally confirmed that there is a fundamental possibility for multicomponent mixtures, where an equilibrium mechanism is realized, to synthesize products with the same phase composition but different morphology (sintered or melted).