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

  • 9 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.

LanguageEnglish (US)
Pages111-119
Number of pages9
JournalJournal of the European Ceramic Society
Volume31
Issue number1-2
DOIs
StatePublished - Jan 2011

Profile

Sintered alumina
Infiltration
Pyrolysis
Sintering
Argon
Composite materials
Carbon Monoxide
Polymer solutions
Densification
Powders
Volume fraction
Nanocomposites
Polymers
Thermodynamics
Decomposition
Microstructure
Temperature
carbosilane

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. 2011 ; Vol. 31, No. 1-2. pp. 111-119
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