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Thermodynamic analysis of chemical compatibility of ceramic reinforcement materials with niobium aluminidesChemical compatibility of several reinforcement materials with three niobium aluminides, Nb3Al, Nb2Al, and NbAl3, were examined from thermodynamic considerations. The reinforcement materials considered in this study include carbides, borides, nitrides, oxides, silicides, and Engel-Brewer compounds. Thermodynamics of the Nb-Al system were reviewed and activities of Nb and Al were derived at desired calculation temperatures. Criteria for chemical compatibility between the reinforcement material and Nb-Al compounds have been defined and several chemically compatible reinforcement materials have been identified.
Document ID
19900056946
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
July 1, 1990
Publication Information
Publication: Journal of Materials Research
Volume: 5
ISSN: 0884-2914
Subject Category
Composite Materials
Accession Number
90A44001
Distribution Limits
Public
Copyright
Other

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