TU Darmstadt / ULB / TUbiblio

Silicon carbonitride ceramics derived from polysilazanes. Part 1: Investigation of compositional and structural properties

Haluschka, Christoph and Kleebe, Hans-Joachim and Franke, R. and Riedel, R. (2000):
Silicon carbonitride ceramics derived from polysilazanes. Part 1: Investigation of compositional and structural properties.
In: Journal of the European Ceramic Society, 20 (9), Elsevier, pp. 1355-1364, [Article]

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 and Kleebe, Hans-Joachim and Franke, R. and Riedel, R.
Title: Silicon carbonitride ceramics derived from polysilazanes. Part 1: Investigation of compositional and structural properties
Language: English
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).

Journal or Publication Title: Journal of the European Ceramic Society
Volume: 20
Number: 9
Publisher: Elsevier
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
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.
Export:
Suche nach Titel in: TUfind oder in Google
Send an inquiry Send an inquiry

Options (only for editors)
Show editorial Details Show editorial Details