Abstract
The results of a study of silicon nitride phase formation in combustion of ferrosilicon in gaseous nitrogen are reported. It was shown that formation of α-or β-modifications of silicon nitride is basically determined by the composition of the batch for self-propagating high-temperature synthesis. When ammonium chloride was added to the initial ferrosilicon, a combustion product with a high (up to 80%) α-Si3N4 content is formed, while dilution with the final product and magnesium fluoride results in predominant (more than 95%) formation of β-Si3N4. The particle size and shape are a function of the conditions of synthesis and are primarily determined by the temperature and the additives incorporated in the initial alloy.
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Translated from Steklo i Keramika, No. 2, pp. 28–30, February, 2007.
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Chukhlomina, L.N., Maksimov, Y.M., Vitushkina, O.G. et al. Phase composition and morphology of products of combustion of ferrosilicon in nitrogen. Glass Ceram 64, 63–65 (2007). https://doi.org/10.1007/s10717-007-0015-6
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DOI: https://doi.org/10.1007/s10717-007-0015-6