Self-propagating exothermic reactions: The synthesis of high-temperature materials by combustion

Fabrication of dense β-SiAlON by a combination of combustion synthesis (CS) and spark plasma sintering (SPS)

“…In our experiment, we found that the CS reactions did not propagate when the quantity of diluent exceeded the optimum quantity. Munir [8] had published the following empirical rule for the CS reaction: The CS reaction can self-propagate only if the adiabatic temperature (T ad ) ≥ 1800 K. In addition, Holt [26] had validated T ad would decrease gradually with an increase in diluent additives. Owing to lack of thermodynamic data on β-SiAlON, we could not calculate the exact value of T ad in our experiment.…”

“…Combustion synthesis (CS), also known as self-propagating high-temperature synthesis (SHS), has been attracting growing interest on account of its capacity for energy conservation, short reaction time, and an ability to afford high purity products [8]. It has been proven to be an efficient technique for the synthesis of a variety of materials such as nitrides [9,10], hydrides [11], oxides [12,13], and many intermetallics [14][15][16][17].…”

Complex dynamic behavior during transition in a solid combustion model

“…To model solid combustion, we take the Arrhenius function as the kinetics function G in the nonequilibrium interface condition (2) [3,4]. Then, with appropriate nondimensionalization, the velocity of propagation relates to the interface temperature as…”

Combustion synthesis/densification of an Al2O3–TiB2 composite

“…A self-propagating gasless (virtually) combustion wave is initiated at one or more regions by an external local heat source or by heating the sample to a sufficient temperature. The fundamental aspects of the process are described by Munir and Anselmi-Tamburini [17] and Yi and Moore [18], among others. The production of dense ceramic, intermetallic, or composite compacts can be accomplished in two basic manners: (a) by comminuting the SHS product, and repressing it using high temperatures and pressures; (b) by taking advantage of the high temperature generated in the (porous) combustion product and applying the pressure while it is still hot and ductile.…”