Formation of Ta–Al intermetallics by combustion synthesis involving Al-based thermite reactions

Effects of α-Si3N4 and AlN addition on formation of α-SiAlON by combustion synthesis

“…1(a)-(c), all of which feature one or two localized reaction zones propagating spirally along the sample in a self-sustaining manner. Instead of forming a planar combustion front spreading longitudinally, the presence of a spinning combustion wave implies that the synthesis reaction is not sufficiently exothermic [23]. According to Ivleva and Merzhanov [24], once the heat flux liberated from self-sustaining combustion is no longer adequate to maintain the steady propagation of a planar front, the combustion front forms one or several localized reaction zones.…”