Processes are studied for synthesis of mullite from kaolin by an unusual method (by fluoride technology) in the temperature range from 850 to 1300°C. Depending on the amount of added fluorine agent it is possible to regulate the ratio of crystal phases that form (acicular mullite and lamellar corundum), that creates prerequisites for controlling preparation of aluminosilicate ceramic with a specific phase composition and a predictable microstructure.
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G. W. Brindley and M. Nakahira, “The kaolinite-mullite reaction series: III. The high temperature phases,” J. Amer. Ceram. Soc., 28, No. 2, 203 – 205 (1961).
E. I. Mel’nichenko, D. G. Épov, G. F. Krysenko, et al., “Processes of silicon removal during treatment and enrichment of mineral raw material with ammonium hydrofluoride,” ZhPKh, 69, No. 8, 12848 – 1251 (1996).
É. G. Rakov, Chemistry and Technology of Inorganic Fluorides [in Russian], MKhTI Mendeleeva, Moscow (1990).
I. I. Nemets, N. S. Bel’maz, and A. I. Netertsov, “Creation of ceramic material self-reinforced with acicular mullite crystals,” Trudy MKhTI, No. 123, 30 – 33 (1982).
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Translated from Novye Ogneupory, No. 6, pp. 39 – 44, June 2010.
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Pogrebenkova, V.V., Vakalova, T.V., Gorbatenko, V.V. et al. Features of phase formation of mullite-corundum materials in mixtures of kaolin with a fluoriding component. Refract Ind Ceram 51, 197–201 (2010). https://doi.org/10.1007/s11148-010-9288-3
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DOI: https://doi.org/10.1007/s11148-010-9288-3