Structural characterization and thermal oxidation resistance of silicon oxycarbides produced by polysiloxane pyrolysis

Structural characterization and thermal oxidation resistance of silicon oxycarbides produced by polysiloxane pyrolysis

Oxycarbides were produced by pyrolysis of polysiloxanes with different contents of methyl/phenyl groups at 1000 °C under nitrogen atmosphere. The structure of the three silicon oxycarbides was studied by elemental analysis, spectroscopy, and X-ray diffraction. The free carbon phase was concentrated...

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Veröffentlicht in:Materials chemistry and physics 2004-07, Vol.86 (1), p.88-98
Hauptverfasser: Kolar, F, Machovic, V, Svitilova, J, Borecka, L
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Free carbon phase
Polysiloxanes
Silicon oxycarbides
Thermal oxidation resistance
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creator Kolar, F
Machovic, V
Svitilova, J
Borecka, L
description Oxycarbides were produced by pyrolysis of polysiloxanes with different contents of methyl/phenyl groups at 1000 °C under nitrogen atmosphere. The structure of the three silicon oxycarbides was studied by elemental analysis, spectroscopy, and X-ray diffraction. The free carbon phase was concentrated by treatment with hydrofluoric acid. The sp 2 graphene planes merged in sp 3 structures form the free carbon phase. Its content and location in the SiOC network and its structural pattern reflects the sp 2/sp 3 ratio of the source polysiloxanes.
doi_str_mv 10.1016/j.matchemphys.2004.02.011
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subjects Free carbon phase
Polysiloxanes
Silicon oxycarbides
Thermal oxidation resistance
title Structural characterization and thermal oxidation resistance of silicon oxycarbides produced by polysiloxane pyrolysis
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