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Synthesis of Si3N4 Powder by Thermal Decomposition of SI(NH)2

Published online by Cambridge University Press:  25 February 2011

Silvia Ampuero
Affiliation:
Powder Technology Laboratory, Materials Science Department, Swiss Federal Institute of Technology (EPFL), CH-1015 Lausanne
Paul Bowen
Affiliation:
Powder Technology Laboratory, Materials Science Department, Swiss Federal Institute of Technology (EPFL), CH-1015 Lausanne
Terry A. Ring
Affiliation:
Chemical Engineering Department, University of Utah, Salt Lake City, Utah 84112
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Abstract

A fine white α-Si3N4 powder has been produced by the thermal decomposition of the coprecipitation product of the reaction between SiC14 and NH3. The Cl content, due to a reaction between Si(NH)2 and the NH4Cl by-product during the thermal treatment of the coprecipitate, has been reduced by using an isothermal step at ≈ 250°C in the heat treatment cycle.

Type
Research Article
Copyright
Copyright © Materials Research Society 1993

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References

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