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Polymer-Derived SiOC/ZrO2Ceramic Nanocomposites with Excellent High-Temperature Stability

Ionescu, Emanuel and Linck, Christoph and Fasel, Claudia and Müller, Mathis and Kleebe, Hans-Joachim and Riedel, Ralf (2010):
Polymer-Derived SiOC/ZrO2Ceramic Nanocomposites with Excellent High-Temperature Stability.
In: Journal of the American Ceramic Society, Wiley, pp. 241-250, 93, (1), ISSN 00027820,
[Online-Edition: http://dx.doi.org/10.1111/j.1551-2916.2009.03395.x],
[Article]

Abstract

Polymer-derived SiOC/ZrO2 ceramic nanocomposites have been prepared using two synthetic approaches. A commercially available polymethylsilsesquioxane (MK Belsil PMS) was filled with nanocrystalline zirconia particles in the first approach. The second method involved the addition of zirconium tetra(n-propoxide), Zr(OnPr)4, as zirconia precursor to polysilsesquioxane. The prepared materials have been subsequently cross-linked and pyrolyzed at 1100°C in argon atmosphere to provide SiOC/ZrO2 ceramics. The obtained SiOC/ZrO2 materials were characterized by means of X-ray diffraction, elemental analysis, Raman spectroscopy as well as transmission electron microscopy. Furthermore, annealing experiments at temperatures from 1300° to 1600°C have been performed. The annealing experiments revealed that the incorporation of ZrO2 into the SiOC matrix remarkably increases the thermal stability of the composites with respect to crystallization and decomposition at temperatures exceeding 1300°C. The results obtained within this study emphasize the enormous potential of polymer-derived SiOC/ZrO2 composites for high-temperature applications.

Item Type: Article
Erschienen: 2010
Creators: Ionescu, Emanuel and Linck, Christoph and Fasel, Claudia and Müller, Mathis and Kleebe, Hans-Joachim and Riedel, Ralf
Title: Polymer-Derived SiOC/ZrO2Ceramic Nanocomposites with Excellent High-Temperature Stability
Language: English
Abstract:

Polymer-derived SiOC/ZrO2 ceramic nanocomposites have been prepared using two synthetic approaches. A commercially available polymethylsilsesquioxane (MK Belsil PMS) was filled with nanocrystalline zirconia particles in the first approach. The second method involved the addition of zirconium tetra(n-propoxide), Zr(OnPr)4, as zirconia precursor to polysilsesquioxane. The prepared materials have been subsequently cross-linked and pyrolyzed at 1100°C in argon atmosphere to provide SiOC/ZrO2 ceramics. The obtained SiOC/ZrO2 materials were characterized by means of X-ray diffraction, elemental analysis, Raman spectroscopy as well as transmission electron microscopy. Furthermore, annealing experiments at temperatures from 1300° to 1600°C have been performed. The annealing experiments revealed that the incorporation of ZrO2 into the SiOC matrix remarkably increases the thermal stability of the composites with respect to crystallization and decomposition at temperatures exceeding 1300°C. The results obtained within this study emphasize the enormous potential of polymer-derived SiOC/ZrO2 composites for high-temperature applications.

Journal or Publication Title: Journal of the American Ceramic Society
Volume: 93
Number: 1
Publisher: Wiley
Divisions: 11 Department of Materials and Earth Sciences > Earth Science > Geo-Material-Science
11 Department of Materials and Earth Sciences > Material Science > Dispersive Solids
11 Department of Materials and Earth Sciences > Earth Science
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences
Date Deposited: 11 Apr 2012 11:41
Official URL: http://dx.doi.org/10.1111/j.1551-2916.2009.03395.x
Identification Number: doi:10.1111/j.1551-2916.2009.03395.x
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