Determination of interfacial properties using a single-fiber microcomposite test

Journal Article · Mon Apr 01 04:00:00 EST 1996 · Journal of the American Ceramic Society

DOI:https://doi.org/10.1111/j.1151-2916.1996.tb08551.x· OSTI ID:247926

Morscher, G N ^[1]; Martinez-Fernandez, J ^[2]; Purdy, M J ^[3]

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1. Case Western Reserve Univ., Cleveland, OH (United States). Dept. of Materials Science and Engineering
2. Univ. of Seville (Spain). Dept. de Fisica de la Materia Condensada
3. BF Goodrich Aerospace, Brecksville, OH (United States)

A single-filament microcomposite consisting of 143-{micro}m-diameter CVD SiC, a thin ``interfacial`` coating, and a thick (130--160 {micro}m) CVD SiC matrix sheath was tested in tension to determine the interfacial shear properties of carbon and BN interfacial coatings. Load/displacement and acoustic emission were used to determine the mechanical behavior of the microcomposites and matrix cracking. Optical and electron microscopy were performed to confirm the extent and nature of matrix cracking and to analyze the microcomposite microstructure. The interfacial properties were determined from matrix cracking and load/displacement hysteresis techniques. Direct measurement of the interfacial sliding stress from push-out and pull-out experiments were in good agreement with two of the three microcomposite systems studied.

• Sponsoring Organization: USDOE
• OSTI ID: 247926
• Journal Information: Journal of the American Ceramic Society, Journal Name: Journal of the American Ceramic Society Journal Issue: 4 Vol. 79; ISSN 0002-7820; ISSN JACTAW
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ACOUSTIC EMISSION TESTING
BORON NITRIDES
CARBON
CHEMICAL VAPOR DEPOSITION
COMPOSITE MATERIALS
CRACKS
ELECTRON MICROSCOPY
INTERFACES
MICROSTRUCTURE
OPTICAL MICROSCOPY
SAMPLE PREPARATION
SHEAR PROPERTIES
SILICON CARBIDES
STRAINS
STRESSES
SURFACE COATING