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Preparation and Characterization of Sic From Alkoxide-Derived Polymeric Precursors

Published online by Cambridge University Press:  25 February 2011

Zhiping Jiang
Affiliation:
Ceramics Processing Research Laboratory Massachusetts Institute of Technology, Cambridge, MA 02139
Wendell E. Rhine
Affiliation:
Ceramics Processing Research Laboratory Massachusetts Institute of Technology, Cambridge, MA 02139
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Abstract

Crystalline SiC was prepared by carbothermic reduction of alkoxide-derived polymeric precursors under a flow of argon at 1400-1600°C. The pyrolysis products from the precursors with a molecular source of carbon, i.e., (R1)x(R2)ySiO1.5(Rl=phenyl; R2=propyl, vinyl), showed different morphologies from those of the precursors derived from TEOS and a polymeric source of carbon (polyfurfuryl alcohol). Furthermore, the pyrolysis chemistry of theses precursors and the microstructure of their corresponding pyrolysis products were studied by means of FTIR, TGA, XRD, SEM, BET, elemental analyses, etc.

Type
Research Article
Copyright
Copyright © Materials Research Society 1992

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References

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