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A Low Temperature Chemical Route to Precursors of Boride and Carbide Ceramic Powders

Published online by Cambridge University Press:  28 February 2011

Joseph J. Ritter
Joseph J. Ritter*
Affiliation:
Ceramics Division National Bureau of Standards Gaithersburg, MD 20899
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Abstract

The controlled reductive dehalogenation of elemental halides has been studied as a low temperature approach to boride and carbide precursors. We have shown that SiCl4 and CCl4 can be reacted with metallic sodium at 130° in a non-polar solvent to give the precursor to SiC. Similar type reactions with TiCl4 and BCl3 or with BCl3 and CC14 have produced the precursors to TiB2 and B4C respectively. This procedure has also been used to generate the precursors to the two-phase composites SiC/TiC and SiC/TiN. The method is generally applicable to any combination of elemental halides which can be reduced by alkali metals or alkali metal alloys.

Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 73: Symposium H – Better Ceramics Through Chemistry II , 1986 , 367
Copyright
Copyright © Materials Research Society 1986

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References

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