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Properties of SiC-SiC Composites Produced Using CVR Converted Graphite Cloth to SiC Cloth

Published online by Cambridge University Press:  15 February 2011

W. Kowbel ,
C. Kyriacou ,
F. Gao ,
C. A. Bruce  and
J. C. Withers
W. Kowbel
Affiliation:
MER Corp., 7960 S. Kolb Road, Tucson, AZ 85706
C. Kyriacou
Affiliation:
MER Corp., 7960 S. Kolb Road, Tucson, AZ 85706
F. Gao
Affiliation:
MER Corp., 7960 S. Kolb Road, Tucson, AZ 85706
C. A. Bruce
Affiliation:
MER Corp., 7960 S. Kolb Road, Tucson, AZ 85706
J. C. Withers
Affiliation:
MER Corp., 7960 S. Kolb Road, Tucson, AZ 85706
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Abstract

Nicalon fiber is the primary reinforcement in SiC-SiC composites currently produced by a variety of techniques including CVI and polymer infiltration. Low strength retention at high temperatures of the Nicalon fibers limits the choice of manufacturing processes which can be employed to produce low cost SiC-SiC composites. MER has developed a new SiC reinforcement based upon a conversion of low cost carbon fabric to SiC via a Chemical Vapor Reaction (CVR) process. This new SiC filaments exhibit an excellent creep resistance at temperatures up to 1600°C. Several SiC-SiC composites were fabricated using graphite fabric converted to SiC fabric utilizing the CVR process combined with a slurry infiltration and CVI densification. A correlation between processing conditions, microstructure and properties of the SiC-SiC composites are discussed in detail.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 365: Symposium M – Ceramic Matrix Composites–Advanced High-Temperature Structural Materials , 1994 , 197
Copyright
Copyright © Materials Research Society 1995

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