Effect of thermal expansion mismatch and fiber coating on the fiber/matrix interfacial shear stress in ceramic matrix composites

Journal Article · Thu Sep 01 00:00:00 EDT 1988 · Advanced Ceramic Materials; (USA)

DOI:https://doi.org/10.1111/j.1551-2916.1988.tb00265.x· OSTI ID:5941900

Brun, M K; Singh, R N ^[1]

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1. General Electric Corporate Research and Development, Schenectady, NY (USA)

A modified indentation technique has been used to measure the interfacial shear stress in a number of ceramic matrices containing silicon carbide fibers. It was shown that the frictional component of interfacial stress was essentially zero when matrix thermal expansion was lower than that of the fiber and increased linearly with thermal expansion mismatch when matrix thermal expansion was higher. The interfacial shear stress was lowered when the fibers were coated with BN. Lower matrix shear stresses resulted in a more extensive fiber pullout during the composite fracture.

• OSTI ID: 5941900
• Journal Information: Advanced Ceramic Materials; (USA), Vol. 3:5; ISSN 0883-5551
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
SILICON CARBIDES
SHEAR PROPERTIES
BORON NITRIDES
COMPOSITE MATERIALS
EXPERIMENTAL DATA
THERMAL EXPANSION
BORON COMPOUNDS
CARBIDES
CARBON COMPOUNDS
DATA
EXPANSION
INFORMATION
MATERIALS
MECHANICAL PROPERTIES
NITRIDES
NITROGEN COMPOUNDS
NUMERICAL DATA
PNICTIDES
SILICON COMPOUNDS
360203* - Ceramics
Cermets
& Refractories- Mechanical Properties