Haluschka, Christoph ; Kleebe, Hans-Joachim ; Franke, Rainer ; Riedel, Ralf (2000)
Silicon carbonitride ceramics derived from polysilazanes. Part 1: Investigation of compositional and structural properties.
In: Journal of the European Ceramic Society, 20 (9)
doi: 10.1016/S0955-2219(00)00010-8
Article, Bibliographie
Abstract
In this paper we report on the compositional and structural properties of ceramics in the Si–C–N system. The amorphous material synthesised by thermally induced ceramisation of an organo-substituted polysilazane crystallises at temperatures exceeding 1450°C in nitrogen atmosphere. Chemical composition, solid state structure, microstructure as well as the crystallisation behaviour depend on: (i) the synthesis conditions; (ii) the pyrolysis atmosphere; and (iii) the time and temperature of a final heat treatment. The chemical composition was determined by chemical bulk analysis together with 15N-method and electron energy-loss spectroscopy (EELS). Reaction products formed during the heat treatment were analysed in-situ by thermal gravimetric analysis coupled with mass spectrometry. The hybridisation of carbon in the solid reaction product was determined by X-ray absorption near-edge structure (XANES). The resulting amorphous microstructure was investigated by electron microscopy (HRTEM), while the crystalline phases were analysed by X-ray diffraction (XRD).
| Item Type: | Article |
|---|---|
| Erschienen: | 2000 |
| Creators: | Haluschka, Christoph ; Kleebe, Hans-Joachim ; Franke, Rainer ; Riedel, Ralf |
| Type of entry: | Bibliographie |
| Title: | Silicon carbonitride ceramics derived from polysilazanes. Part 1: Investigation of compositional and structural properties |
| Language: | English |
| Date: | 6 July 2000 |
| Publisher: | Elsevier |
| Journal or Publication Title: | Journal of the European Ceramic Society |
| Volume of the journal: | 20 |
| Issue Number: | 9 |
| DOI: | 10.1016/S0955-2219(00)00010-8 |
| Abstract: | In this paper we report on the compositional and structural properties of ceramics in the Si–C–N system. The amorphous material synthesised by thermally induced ceramisation of an organo-substituted polysilazane crystallises at temperatures exceeding 1450°C in nitrogen atmosphere. Chemical composition, solid state structure, microstructure as well as the crystallisation behaviour depend on: (i) the synthesis conditions; (ii) the pyrolysis atmosphere; and (iii) the time and temperature of a final heat treatment. The chemical composition was determined by chemical bulk analysis together with 15N-method and electron energy-loss spectroscopy (EELS). Reaction products formed during the heat treatment were analysed in-situ by thermal gravimetric analysis coupled with mass spectrometry. The hybridisation of carbon in the solid reaction product was determined by X-ray absorption near-edge structure (XANES). The resulting amorphous microstructure was investigated by electron microscopy (HRTEM), while the crystalline phases were analysed by X-ray diffraction (XRD). |
| Uncontrolled Keywords: | Electron microscopy, Microstructure-final, Polysilazane, Precursors-organic, Si–C–N, X-ray methods |
| Divisions: | 11 Department of Materials and Earth Sciences 11 Department of Materials and Earth Sciences > Earth Science 11 Department of Materials and Earth Sciences > Earth Science > Geo-Material-Science 11 Department of Materials and Earth Sciences > Material Science 11 Department of Materials and Earth Sciences > Material Science > Dispersive Solids |
| Date Deposited: | 19 Nov 2008 16:04 |
| Last Modified: | 13 Aug 2021 08:38 |
| PPN: | |
| Funders: | This study was supported by the Deutsche Forschungsgemeinschaft, Bonn, Germany, under the project number Ri 510-5/1 “Elektronische Eigenschaften neuer amorpher und nanokristalliner Keramiken”., R.R. acknowledges the financial support by the Fonds der Chemischen Industrie, Frankfurt, Germany. |
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