Solid-phase processes in a ceramic matrix in the system Si[O.sub.2]--[Al.sub.2][O.sub.3]--Ti[O.sub.2] with addition of fibrous nanostructural aluminum oxide

The formation of a composite ceramic based on the system Si[O.sub.2]--[Al.sub.2][O.sub.3]--Ti[O.sub.2] with the addition of γ- and α-[Al.sub.2][O.sub.3] nanostructural powders during heat treatment in the temperature range 1300-1400°C is investigated. It is established that the introduction of γ-[Al...

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Bibliographic Details
Published in:Glass and ceramics 2010-07, Vol.67 (1-2), p.47
Main Authors: Ul'yanova, T.M, Krutko, N.P, Dyatlova, E.M, Paemurd, E.S, Podbolotov, K.B
Format: Article
Language:English
Subjects:
Aluminum oxide
Ceramic materials
Ceramics
Crystals
Porosity
Powders
Structure
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Summary:The formation of a composite ceramic based on the system Si[O.sub.2]--[Al.sub.2][O.sub.3]--Ti[O.sub.2] with the addition of γ- and α-[Al.sub.2][O.sub.3] nanostructural powders during heat treatment in the temperature range 1300-1400°C is investigated. It is established that the introduction of γ-[Al.sub.2][O.sub.3] reactive nanostructural powder stimulated a solid-phase reaction between the silica and alumina with mullite being formed, while the addition of α- [Al.sub.2][O.sub.3] powder led to the formation of aluminum titanate. These processes altered the phase composition and the porous and crystalline structure of the composites and increased their physical--chemical and thermophysical properties.
ISSN:0361-7610
1573-8515