The Energy-Efficient Processing of Fine Materials by the Micropyretic Synthesis Route

Figure 2

SEM morphologies of the Ti-B reacted zone. As the combustion commences, when the temperature of the unreacted portion is increased to a high level, the less refractory phase (Ti) is first melted. The molten Ti then encapsulates the nonmelting B particles and the resultant increase in the contact area between Ti and B dramatically increases the reaction kinetics. The reacted product subsequently forms on the surface of the nonmelting B particle.