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Interfacial Properties of As-Received and Coated SiC (SCS-6) Fiber Reinforced Reaction-Formed SiC Matrix Composites

Published online by Cambridge University Press:  15 February 2011

Paula J. Gaeta ,
Richard D. Sisson JR. ,
M. Singh  and
Jeffrey I. Eldridge
Paula J. Gaeta
Affiliation:
Worcester Polytechnic Institute, Worcester, MA 01609
Richard D. Sisson JR.
Affiliation:
Worcester Polytechnic Institute, Worcester, MA 01609
M. Singh
Affiliation:
NYMA, Inc., Lewis Research Group, Cleveland, OH 44135
Jeffrey I. Eldridge
Affiliation:
NASA Lewis Research Center, Cleveland, OH 44135
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Abstract

The possibility of improving the interfacial shear strength of the SiC fiber reinforced SiC matrix composite system was examined. A ceramic fiber coating was chosen based on availability and chemical stability with the fiber and matrix. Fiber push-out tests conducted on as-received and coated fiber reinforced composite samples allowed characterization of the interfacial shear strength. Average debond shear and frictional sliding stresses were calculated. The effects of sample thickness and second phase addition in the matrix were also evaluated. Tested samples were examined by SEM to determine the location of the interfacial failure and to determine if any interface reactions had occurred. The coating was then evaluated based on the resulting interfacial shear strength, failure location, and integrity of the interface as compared to those properties of samples reinforced with as-received fibers.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 365: Symposium M – Ceramic Matrix Composites–Advanced High-Temperature Structural Materials , 1994 , 365
Copyright
Copyright © Materials Research Society 1995

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References

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