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Characterization of interfacial failure in SiC reinforced Si3N4 matrix composite material by both fiber push-out testing and Auger electron spectroscopyAES depth profiling and a fiber push-out test for interfacial shear-strength determination have been used to ascertain the mechanical/chemical properties of the fiber/matrix interface in SiC-reinforced reaction-bonded Si3N4, with attention to the weak point where interfacial failure occurs. In the cases of both composite fracture and fiber push-outs, the interfacial failure occurred either between the two C-rich coatings that are present on the double-coated SiC fibers, or between the inner C-rich coating and the SiC fiber. Interface failure occurs at points of very abrupt concentration changes.
Document ID
Document Type
Reprint (Version printed in journal)
External Source(s)
Eldridge, J. I.
(NASA Lewis Research Center Cleveland; Sverdrup Technology, Inc., Middleburg Heights, OH, United States)
Honecy, F. S.
(NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
August 14, 2013
Publication Date
June 1, 1990
Publication Information
Publication: Journal of Vacuum Science and Technology A
Volume: 8
ISSN: 0734-2101
Subject Category
Composite Materials
Accession Number
Distribution Limits

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