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Thermo-Oxidative Degradation Of SiC/Si3N4 CompositesExperimental study conducted on thermo-oxidative degradation of composite-material specimens made of silicon carbide fibers in matrices of reaction-bonded silicon nitride. In SiC/Si3N4 composites of study, interphase is 3-micrometers-thick carbon-rich coat on surface of each SiC fiber. Thermo-oxidative degradation of these composites involves diffusion of oxygen through pores of composites to interphases damaged by oxidation. Nondestructive tests reveal critical exposure times.
Document ID
19950071261
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Baaklini, George Y.
(NASA Lewis Research Center, Cleveland, OH.)
Batt, Ramakrishna T.
(NASA Lewis Research Center, Cleveland, OH.)
Rokhlin, Stanislav I.
(Ohio State Univ.)
Date Acquired
August 17, 2013
Publication Date
December 1, 1995
Publication Information
Publication: NASA Tech Briefs
Volume: 19
Issue: 12
ISSN: 0145-319X
Subject Category
Physical Sciences
Report/Patent Number
LEW-15997
Accession Number
95B10657
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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