L. N. Chukhlomina*, O. G. Vitushkina**, and A. N. Avramchik***
Department of Structural Macrokinetics, Tomsk Scientific Center, Siberian Branch, Russian Academy of Sciences,
pr. Akademicheskii 10/3, Tomsk, 634021 Russia
*e-mail: liudnik@yandex.ru
**e-mail: olchik@yandex.ru
***e-mail: aleck@dsm.tsc.ru
Abstract—The equilibria in ferrosilicon–zircon–nitrogen and ferrosilicon–ilmenite–nitrogen systems are cal-
culated. Nitriding of these compositions is investigated experimentally and the experimental and calculated data
are compared. It is established that the combustion in the ferrosilicon–additive–nitrogen systems can be imple-
mented with a zircon additive no larger than 60% and that of ilmenite no larger than 40%. The composition of
the final product of the mixture with zircon includes Si4N4, Fe, Si2N2O, and ZrO2; that with ilmenite includes
Si3N4, Fe, Si2N2O, and TiN. The absence of ZrN in the former case contradicts the results of the calculation and
the presence of TiN in the latter case corresponds to them.
Keywords: thermodynamic calculation, self-propagating high-temperature synthesis, ceramic nitride-based
compositions
DOI: 10.3103/S1067821213040044
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