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Thermal Reactor Synthesis of Nanoscale Ceramic Powders using Organosilazane Aerosols

Published online by Cambridge University Press:  25 February 2011

Tongsan D. Xiao ,
Peter R. Strutt ,
Kenneth E. Gonsalves  and
V. Shankar
Tongsan D. Xiao
Affiliation:
The University of Connecticut, Institute of Materials Science, Department of Metallurgy, U-136, Storrs, CT 06268
Peter R. Strutt
Affiliation:
The University of Connecticut, Institute of Materials Science, Department of Metallurgy, U-136, Storrs, CT 06268
Kenneth E. Gonsalves
Affiliation:
The University of Connecticut, Institute of Materials Science, Department of Metallurgy, U-136, Storrs, CT 06268
V. Shankar
Affiliation:
The University of Connecticut, Institute of Materials Science, Department of Metallurgy, U-136, Storrs, CT 06268
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Abstract

This investigation involves the thermal conversion of an organosilazane precursors into ultrafine ceramic particles. In this process, aerosols of a reactive organosilazane precursor, [CH3SiHNH]n n = 3 or 4, are injected into a hot furnace to obtain Si3N4/SiC ceramic powders. One critical feature examined in this process was the rapidity of the powder synthesis, in a reaction which involves (i) elimination of ligand groups, (ii) formation of ceramic species, and (iii) condensation of ceramic species into ultrafine ceramic particles. Accompanying studies a model has been formulated to determine the gas cooling rate and particle size.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 249: Symposium Q – Synthesis and Processing of Ceramics: Scientific Issues , 1991 , 127
Copyright
Copyright © Materials Research Society 1992

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References

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