Interfacial properties of as-received and coated SiC (SCS-6) fiber reinforced reaction-formed SiC matrix composites

Book · Sun Oct 01 04:00:00 EDT 1995

OSTI ID:100576

Gaeta, P J; Sisson, Jr, R D ^[1]; Singh, M ^[2]; Eldridge, J I ^[3]

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1. Worcester Polytechnic Inst., MA (United States)
2. NYMA, Inc., Cleveland, OH (United States)
3. National Aeronautics and Space Administration, Cleveland, OH (United States). Lewis Research Center

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.

• OSTI ID: 100576
• Report Number(s): CONF-941144--; ISBN 1-55899-266-9
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BONDING
CARBON
COATINGS
COMPOSITE MATERIALS
CRACKS
DIFFUSION
EXPERIMENTAL DATA
INTERFACES
ION MICROPROBE ANALYSIS
MASS SPECTROSCOPY
MECHANICAL PROPERTIES
MOLYBDENUM SILICIDES
NIOBIUM SILICIDES
SAMPLE PREPARATION
SCANNING ELECTRON MICROSCOPY
SHEAR PROPERTIES
SILICON CARBIDES
SLIDING FRICTION
TITANIUM BORIDES