Combustion synthesis silicides

Rogachev, A. S., Shugaev, V. A., Khomenko, I. A., Varma, A., and Kachelmyer, C., On the mechanism of structure formation during combustion synthesis of titanium silicides. Combust. Sci. Tech., 109,53(1995). 

L. L. Wang and Z. A. Munir, Kinetic analysis of the combustion synthesis of molybdenum and titanium silicides, Metall. Trans. 1995, 26B, 591-601. 

In order to carry out combustion synthesis, the powdered mixture of reactants (0.1-100 pm particle size) is generally placed in an appropriate gas medium that favours an exothermic reaction on ignition (in the case of oxides, air is generally sufficient). The combustion temperature is anywhere between 1500 and 3500K depending on the reaction. Reaction times are very short since the desired product results soon after the combustion. A gas medium is not always necessary. This is so in the synthesis of borides, silicides and carbides, where the elements are quite stable... 

The products of combustion synthesis can be sinters, melts or powders (ultrafine included) of carbides, nitrides, borides, silicides, halogenides and other compounds, solid solutions or mixed phases, depending on the parameters and conditions of the process. There are many preparative and technological procedures for producing various compounds, materials and items in the combustion mode. These are described in the scientific and patent literature and their consideration goes beyond the framework of the present paper. The same has to be said about the numerous theoretical and experimental results concerning various aspects of combustion, that are also considered in the above-mentioned reviews. 

Figure 4. Evidence of spin combustion during the synthesis of Ni silicides [7].

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