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Thermochemical analysis of chemical processes relevant to the stability and processing of SiC-reinforced Si3N4 compositeChemical processes relevant to the stability and processing of SiC-reinforced Si3N4 composites have been examined from thermochemical considerations. The thermodynamic stabilities of various interfaces, such as SiC-Si3N4, SiC-Si3N4-Si2ON2, and SiC-Si3N4-SiO2, have been examined as a function of temperature, and the temperatures above which these interfaces become unstable have been calculated. The degradation of SiC during the processing of the composite has been examined. The processing routes considered in this study include the reaction bonded silicon nitride (RBSN) process and the pressure-assisted sintering processes with suitable sintering additives.
Document ID
19910072338
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Misra, Ajay K.
(NASA Lewis Research Center; Sverdrup Technology, Inc. Cleveland, OH, United States)
Date Acquired
August 14, 2013
Publication Date
October 1, 1991
Publication Information
Publication: Ceramic Engineering and Science Proceedings
Volume: 12
ISSN: 0196-6219
Subject Category
Composite Materials
Accession Number
91A56961
Distribution Limits
Public
Copyright
Other

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