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Preparation of Ceramic Composites by Active-Ftller-Controlled-Polymer-Pyrolysis

Published online by Cambridge University Press:  21 February 2011

Paolo Colombo ,
Mohamed O. Abdirashid ,
Massimo Guglielmi ,
Luca Mancinelli Degli Esposti  and
Luca Agostini
Paolo Colombo
Affiliation:
Dipartimento di Ingegneria Meccanica, Settore Materiali, Université di Padova, via Marzolo 9, 35131 Padova, Italy
Mohamed O. Abdirashid
Affiliation:
Dipartimento di Ingegneria Meccanica, Settore Materiali, Université di Padova, via Marzolo 9, 35131 Padova, Italy
Massimo Guglielmi
Affiliation:
Dipartimento di Ingegneria Meccanica, Settore Materiali, Université di Padova, via Marzolo 9, 35131 Padova, Italy
Luca Mancinelli Degli Esposti
Affiliation:
I.S.R.I.M., Loc. Pentima Bassa 21, 05100 Terni, Italy
Luca Agostini
Affiliation:
I.S.R.I.M., Loc. Pentima Bassa 21, 05100 Terni, Italy
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Abstract

Active-filler-controlled-polymer-pyrolysis has recently been reported as a novel processing route for preparing near-net shape bulk ceramic composite materials. Active fillers, like Ti or Si powders, may react with solid or gaseous decomposition products of the polymer or with the heating gas atmosphere. In this study, a mixture of silicone resin (GE SR350) and Si powder was heated at temperatures up to 1430°C in Ar or N2. After the highest temperature firing, the resulting material was primarily comprised of SiC and SiOC when the heating was performed in Ar, or of SiOC, SiC, Si3N4 and Si2N2O when the heating was performed in N2. The evolution of the microstructure of the ceramic composite was followed by DTA-TGA, FT-IR and XRD.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 346: Symposium N – Better Ceramics Through Chemistry VI , 1994 , 403
Copyright
Copyright © Materials Research Society 1998

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References

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