Microstructure/property relationships for SiC filament-reinforced RBSN. [Reaction-bonded silicon nitride]
Conference
·
· Ceram. Eng. Sci. Proc.; (United States)
OSTI ID:7170719
Reaction-bonded silicon nitride has been reinforced by SiC filaments. The strength and toughness of this composite is dependent on the microstructure and microchemistry of the fiber/matrix interface. Room temperature flexural strengths of 900 MPa have been observed. Weak interfacial bonding results in shear failure, whereas stronger bonding results in filament fracture and pullout. Auger analysis of the interface reveals that a pure carbon layer is responsible for shear failure. This material shows the highest strength because crack deflection in the carbon layer protects the SiC filament. 18 references.
- OSTI ID:
- 7170719
- Report Number(s):
- CONF-860152-
- Journal Information:
- Ceram. Eng. Sci. Proc.; (United States), Journal Name: Ceram. Eng. Sci. Proc.; (United States) Vol. 7; ISSN CESPD
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360602 -- Other Materials-- Structure & Phase Studies
360603* -- Materials-- Properties
BONDING
CARBIDES
CARBON
CARBON COMPOUNDS
COATINGS
COMPOSITE MATERIALS
CRYSTAL STRUCTURE
ELEMENTS
FABRICATION
FIBERS
JOINING
MATERIALS
MECHANICAL PROPERTIES
MICROSTRUCTURE
NITRIDES
NITROGEN COMPOUNDS
NONMETALS
PNICTIDES
PROTECTIVE COATINGS
SILICON CARBIDES
SILICON COMPOUNDS
SILICON NITRIDES
360602 -- Other Materials-- Structure & Phase Studies
360603* -- Materials-- Properties
BONDING
CARBIDES
CARBON
CARBON COMPOUNDS
COATINGS
COMPOSITE MATERIALS
CRYSTAL STRUCTURE
ELEMENTS
FABRICATION
FIBERS
JOINING
MATERIALS
MECHANICAL PROPERTIES
MICROSTRUCTURE
NITRIDES
NITROGEN COMPOUNDS
NONMETALS
PNICTIDES
PROTECTIVE COATINGS
SILICON CARBIDES
SILICON COMPOUNDS
SILICON NITRIDES