Features of phase formation of mullite-corundum materials in mixtures of kaolin with a fluoriding component

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 corund...

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Published inRefractories and industrial ceramics Vol. 51; no. 3; pp. 197 - 201
Main Authors Pogrebenkova, V. V., Vakalova, T. V., Gorbatenko, V. V., Grekhova, M. V.
Format Journal Article
LanguageEnglish
Published Boston Springer US 01.11.2010
Springer
Springer Nature B.V
Subjects
Aluminosilicates
Aluminum oxide
Aluminum silicates
Ceramic materials
Ceramics
Characterization and Evaluation of Materials
Chemistry and Materials Science
Clay
Composites
Corundum
Crystals
Fluorides
Glass
Kaolin
Materials Science
Microstructure
Mullite
Natural Materials
heat treatment, synthesis, phase formation, mullite, topaz, corundum
kaolin, ammonium hydrofluoride, fluoriding
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Summary: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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ISSN:1083-4877
1573-9139
DOI:10.1007/s11148-010-9288-3