Al2O3-SiC composites prepared by infiltration of pre-sintered alumina with a poly(allyl)carbosilane

DuŠan Galusek, Róbert Klement, Jaroslav Sedláček, Miroslav Balog, Claudia Fasel, J. Zhang, M. A. Crimp, Ralf Riedel

    Research output: Contribution to journalArticle

    • 8 Citations

    Abstract

    The Al2O3/SiC nanocomposites containing 3-8vol.% SiC were prepared through infiltration and in situ thermal decomposition of a preceramic polymer SiC precursor (poly(allyl)carbosilane) in pre-sintered alumina matrix. The volume fraction of SiC, and the microstructure of composites were adjusted by concentration of the polymer solution, and by the conditions of pyrolysis and sintering. The specimens were densified by pressureless sintering at temperatures between 1550 and 1850°C in flowing argon. The use of powder bed producing SiO, CO and other volatile species suppressed decomposition reactions in the composites and was vital for their successful densification. The experimental results are discussed against thermodynamic analysis of the system Al2O3/SiC/SiO2 in an inert Ar atmosphere.

    Original languageEnglish (US)
    Pages (from-to)111-119
    Number of pages9
    JournalJournal of the European Ceramic Society
    Volume31
    Issue number1-2
    DOIs
    StatePublished - Jan 2011

    Profile

    Composite materials
    Sintered alumina
    Infiltration
    Pyrolysis
    Sintering
    Appetite Regulation
    Polymer solutions
    Densification
    Argon
    Volume fraction
    Nanocomposites
    Thermodynamics
    Protective atmospheres
    Decomposition
    Powders
    Microstructure
    Polymers
    Temperature
    Enzyme Reactivators
    Acetanilides

    Keywords

    • AlO
    • Nanocomposites
    • SiC
    • Sintering
    • SiO

    ASJC Scopus subject areas

    • Ceramics and Composites
    • Materials Chemistry

    Cite this

    Galusek, D., Klement, R., Sedláček, J., Balog, M., Fasel, C., Zhang, J., ... Riedel, R. (2011). Al2O3-SiC composites prepared by infiltration of pre-sintered alumina with a poly(allyl)carbosilane. Journal of the European Ceramic Society, 31(1-2), 111-119. DOI: 10.1016/j.jeurceramsoc.2010.09.013

    Al2O3-SiC composites prepared by infiltration of pre-sintered alumina with a poly(allyl)carbosilane. / Galusek, DuŠan; Klement, Róbert; Sedláček, Jaroslav; Balog, Miroslav; Fasel, Claudia; Zhang, J.; Crimp, M. A.; Riedel, Ralf.

    In: Journal of the European Ceramic Society, Vol. 31, No. 1-2, 01.2011, p. 111-119.

    Research output: Contribution to journalArticle

    Galusek, D, Klement, R, Sedláček, J, Balog, M, Fasel, C, Zhang, J, Crimp, MA & Riedel, R 2011, 'Al2O3-SiC composites prepared by infiltration of pre-sintered alumina with a poly(allyl)carbosilane' Journal of the European Ceramic Society, vol 31, no. 1-2, pp. 111-119. DOI: 10.1016/j.jeurceramsoc.2010.09.013
    Galusek D, Klement R, Sedláček J, Balog M, Fasel C, Zhang J et al. Al2O3-SiC composites prepared by infiltration of pre-sintered alumina with a poly(allyl)carbosilane. Journal of the European Ceramic Society. 2011 Jan;31(1-2):111-119. Available from, DOI: 10.1016/j.jeurceramsoc.2010.09.013

    Galusek, DuŠan; Klement, Róbert; Sedláček, Jaroslav; Balog, Miroslav; Fasel, Claudia; Zhang, J.; Crimp, M. A.; Riedel, Ralf / Al2O3-SiC composites prepared by infiltration of pre-sintered alumina with a poly(allyl)carbosilane.

    In: Journal of the European Ceramic Society, Vol. 31, No. 1-2, 01.2011, p. 111-119.

    Research output: Contribution to journalArticle

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    abstract = "The Al2O3/SiC nanocomposites containing 3-8vol.% SiC were prepared through infiltration and in situ thermal decomposition of a preceramic polymer SiC precursor (poly(allyl)carbosilane) in pre-sintered alumina matrix. The volume fraction of SiC, and the microstructure of composites were adjusted by concentration of the polymer solution, and by the conditions of pyrolysis and sintering. The specimens were densified by pressureless sintering at temperatures between 1550 and 1850°C in flowing argon. The use of powder bed producing SiO, CO and other volatile species suppressed decomposition reactions in the composites and was vital for their successful densification. The experimental results are discussed against thermodynamic analysis of the system Al2O3/SiC/SiO2 in an inert Ar atmosphere.",
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    AU - Balog,Miroslav

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