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Microstructure of Silicon Carbide/Carbon Composites and Relationships with Mechanical Properties
Author(s) -
Bourrat Xavier,
Turner Kristofer S.,
Evans Anthony G.
Publication year - 1995
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1995.tb09082.x
Subject(s) - materials science , composite material , silicon carbide , brittleness , microstructure , composite number , coating , phase (matter) , matrix (chemical analysis) , fiber , organic chemistry , chemistry
Three different 2‐D SiC/C composites, analyzed by TEM, have mechanical performances directly controlled by the interfacial structure resulting from processing. Localized attachment of the fibers to a brittle matrix constituent is shown to be responsible for composite weakening by impeding interface debonding and sliding. Moreover, the particulate phase used in the matrix is found to have a strong influence. There is a consequent sensitivity of composite strength to the particulate properties. Finally, it is demonstrated that the hindrance of debonding and sliding caused by the brittle matrix phase can be suppressed by using a C fiber coating.