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Silicon Carbide Via the Hydrolysis-Condensation Process of Dimethyldiethoxysilane/Tetraethoxysilane Copolymers.

Published online by Cambridge University Press:  25 February 2011

K. C. Chen ,
K. J. Thorne ,
A. Chemseddine ,
Florence Babonneau  and
J. D. Mackenzie
K. C. Chen
Affiliation:
UCLA, Dept of Materials Science and Engineering, Los Angeles, CA 90024.
K. J. Thorne
Affiliation:
UCLA, Dept of Materials Science and Engineering, Los Angeles, CA 90024.
A. Chemseddine
Affiliation:
UCLA, Dept of Materials Science and Engineering, Los Angeles, CA 90024.
Florence Babonneau
Affiliation:
UCLA, Dept of Materials Science and Engineering, Los Angeles, CA 90024.
J. D. Mackenzie
Affiliation:
UCLA, Dept of Materials Science and Engineering, Los Angeles, CA 90024.
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Abstract

Transparent monolithic pieces of gel have been prepared from the hydrolysis of a mixture of dimethyldiethoxysilane (DEDMS) and tetraethoxysilane (TEOS). The characterization of this gel has been done by infrared and shows that a copolymerization between the two precursors has occurred during the hydrolysis-condensation process. Pyrolysis of this gel lead to the formation of β-SiC at 1550°C. The characterization of the pyrolysing process has been investigated. The Si-CH3 bonds are broken during the heat treatment, leading to a mixture of silica and carbon. The formation of β-SiC is therefore due to a carbothermal reduction of this silica matrix.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 121: Symposium H – Better Ceramics Through Chemistry III , 1988 , 571
Copyright
Copyright © Materials Research Society 1988

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References

REFERENCES

Wynne, K.J. and Rice, R.W., Ann. Rev. Mater. Sci. 14, 297 (1984).Google Scholar
2. Wei, G.C., Kennedy, C.R. and Harris, L.A., Am. Ceram. Soc. Bull. 63, 1054 (1984).Google Scholar
3. White, D.A., Oleff, S.M., Boyer, R.D., Budinger, P.A. and Fox, J.R., Adv. Ceram. Mat., 2, 45 (1987);Google Scholar
White, D.A., Oleff, S.M. and Fox, J.R., Adv. Ceram. Mat., 2, 53 (1987).Google Scholar
4. Sakka, S., Tanaka, Y. and Kokubo, T., Non, J. Cryst. Solids 82, 24 (1986).CrossRefGoogle Scholar
5. Babonneau, F., Thorne, K. and Mackenzie, J.D., (to be published).Google Scholar
6. Launer, P.J., Silicon compounds, Petrach Systems, Inc., 77 (1984).Google Scholar