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Influence of nano-aluminum filler on the microstructure of SiOC ceramics

Toma, Liviu ; Fasel, Claudia ; Lauterbach, Stefan ; Kleebe, Hans-Joachim ; Riedel, Ralf (2011)
Influence of nano-aluminum filler on the microstructure of SiOC ceramics.
In: Journal of the European Ceramic Society, 31 (9)
doi: 10.1016/j.jeurceramsoc.2011.03.011
Artikel, Bibliographie

Kurzbeschreibung (Abstract)

Ceramic SiC–mullite–Al2O3 based nanocomposites were successfully obtained at temperatures below 1500 °C after pyrolysis and annealing of green compacts prepared by cross-linking and shaping in a warm press step of commercial poly(methylsilsesquioxane) MK polymer mechanically mixed with aluminum filler having nanoparticle size. The heat treatment takes place under the exclusion of oxygen (inert argon atmosphere) and temperatures as low as 800 °C initiate the crystallization of a silicon carbide phase. The influence of the nano-aluminum filler and of the pyrolysis temperature on the crystallization behavior of the materials has been investigated. It was confirmed that an appropriate amount of nano-aluminum filler leads to a cristobalite free bulk SiOC ceramic. In consequence, the received ceramic samples have to be considered as a nano/micro-ceramic composite consisting of crystals of mullite (average dimension in the range of 200 nm), silicon carbide (20 nm) and α-alumina (50 nm).

Typ des Eintrags: Artikel
Erschienen: 2011
Autor(en): Toma, Liviu ; Fasel, Claudia ; Lauterbach, Stefan ; Kleebe, Hans-Joachim ; Riedel, Ralf
Art des Eintrags: Bibliographie
Titel: Influence of nano-aluminum filler on the microstructure of SiOC ceramics
Sprache: Englisch
Publikationsjahr: August 2011
Verlag: Elsevier Science Publishing
Titel der Zeitschrift, Zeitung oder Schriftenreihe: Journal of the European Ceramic Society
Jahrgang/Volume einer Zeitschrift: 31
(Heft-)Nummer: 9
DOI: 10.1016/j.jeurceramsoc.2011.03.011
Kurzbeschreibung (Abstract):

Ceramic SiC–mullite–Al2O3 based nanocomposites were successfully obtained at temperatures below 1500 °C after pyrolysis and annealing of green compacts prepared by cross-linking and shaping in a warm press step of commercial poly(methylsilsesquioxane) MK polymer mechanically mixed with aluminum filler having nanoparticle size. The heat treatment takes place under the exclusion of oxygen (inert argon atmosphere) and temperatures as low as 800 °C initiate the crystallization of a silicon carbide phase. The influence of the nano-aluminum filler and of the pyrolysis temperature on the crystallization behavior of the materials has been investigated. It was confirmed that an appropriate amount of nano-aluminum filler leads to a cristobalite free bulk SiOC ceramic. In consequence, the received ceramic samples have to be considered as a nano/micro-ceramic composite consisting of crystals of mullite (average dimension in the range of 200 nm), silicon carbide (20 nm) and α-alumina (50 nm).

Freie Schlagworte: Nanocomposites, Mullite, Al2O3, SiC
Fachbereich(e)/-gebiet(e): 11 Fachbereich Material- und Geowissenschaften
11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft
11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Disperse Feststoffe
Hinterlegungsdatum: 04 Apr 2012 09:24
Letzte Änderung: 18 Aug 2021 11:16
PPN:
Sponsoren: The work reported here is part of the Priority Program “Nanoscaled Inorganic Materials by Molecular Design: New Materials for Advanced Technologies” (DFG-SPP 1181) funded by the Deutsche Forschungsgemeinschaft, Bonn, Germany., Fonds der Chemischen Industrie, Frankfurt, Germany
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