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Processing and mechanical behavior of SiC fiber-reinforced Si3N4 composites

Published online by Cambridge University Press:  31 January 2011

J-M. Yang ,
Steven T.J. Chen ,
S.M. Jeng ,
R.B. Thayer  and
J-F. LeCoustaouec
J-M. Yang
Affiliation:
Department of Materials Science and Engineering, University of California, Los Angeles, California 90024-1595
Steven T.J. Chen
Affiliation:
Department of Materials Science and Engineering, University of California, Los Angeles, California 90024-1595
S.M. Jeng
Affiliation:
Department of Materials Science and Engineering, University of California, Los Angeles, California 90024-1595
R.B. Thayer
Affiliation:
Department of Materials Science and Engineering, University of California, Los Angeles, California 90024-1595
J-F. LeCoustaouec
Affiliation:
Textron Specialty Materials, Lowell, Massachusetts 02851
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Abstract

The interfacial properties and mechanical behavior of the SCS-6/Si3N4 composites fabricated by hot pressing from powder lay-up and tape lay-up techniques were studied. Interfacial shear strength and frictional stress were measured using an indentation test. Fracture toughness and work-of-fracture were measured using a three-point bending test on a chevron-notched specimen. The influence of interfacial shear strength on the toughening mechanisms and crack propagation behavior were investigated. The results indicate that the processing routes and fiber orientation will affect the interfacial properties, which in turn have a significant influence on mechanical properties.

Type
Articles
Information
Journal of Materials Research , Volume 6 , Issue 9 , September 1991 , pp. 1926 - 1936
Copyright
Copyright © Materials Research Society 1991

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