Galusek, Dušan ; Klement, Róbert ; Sedláček, Jaroslav ; Balog, Miroslav ; Fasel, Claudia ; Zhang, J. ; Crimp, M. A. ; Riedel, Ralf (2011)
Al2O3–SiC composites prepared by infiltration of pre-sintered alumina with a poly(allyl)carbosilane.
In: Journal of the European Ceramic Society, 31 (1-2)
doi: 10.1016/j.jeurceramsoc.2010.09.013
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
The Al2O3/SiC nanocomposites containing 3–8 vol.% 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.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2011 |
| Autor(en): | Galusek, Dušan ; Klement, Róbert ; Sedláček, Jaroslav ; Balog, Miroslav ; Fasel, Claudia ; Zhang, J. ; Crimp, M. A. ; Riedel, Ralf |
| Art des Eintrags: | Bibliographie |
| Titel: | Al2O3–SiC composites prepared by infiltration of pre-sintered alumina with a poly(allyl)carbosilane |
| Sprache: | Englisch |
| Publikationsjahr: | 31 Januar 2011 |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Journal of the European Ceramic Society |
| Jahrgang/Volume einer Zeitschrift: | 31 |
| (Heft-)Nummer: | 1-2 |
| DOI: | 10.1016/j.jeurceramsoc.2010.09.013 |
| Kurzbeschreibung (Abstract): | The Al2O3/SiC nanocomposites containing 3–8 vol.% 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. |
| Freie Schlagworte: | Nanocomposites, Al2O3, SiC, SiO2, Sintering |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Disperse Feststoffe 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften |
| Hinterlegungsdatum: | 04 Apr 2012 11:30 |
| Letzte Änderung: | 05 Mär 2013 10:00 |
| PPN: | |
| Sponsoren: | The financial support of this work by the Alexander von Humboldt Foundation, Bonn, Germany (D. Galusek and R. Riedel), by the APVV grant No 0485-06, by the grant APVV LPP 0297-09, J. Fulbright Commission in the Slovak Republic (M. Balog) |
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