Fracture behavior of SiC whisker-reinforced Al2O3 with modified interfaces

Conference · Thu Oct 01 00:00:00 EDT 1992 · Ceramic Engineering and Science Proceedings; (United States)

OSTI ID:7110413

Steyer, T E; Faber, K T

Carbon-coated SiC whiskers have been examined as a function of coating thickness for reinforcement in Al2O3. A compliant carbon layer at the whisker/matrix interface modifies the residual stress due to thermal expansion mismatch and changes the interfacial chemistry. The fracture behavior of this material has been observed using 4-point bending for strength and the double cantilever beam technique for fracture toughness and R-curve behavior. The strength and R-curve behavior of composites with and without whisker coatings of carbon are presented to evaluate the effect of modified interfaces on the mechanical performance of whisker composites. 15 refs.

• OSTI ID: 7110413
• Report Number(s): CONF-920144--
• Journal Information: Ceramic Engineering and Science Proceedings; (United States), Journal Name: Ceramic Engineering and Science Proceedings; (United States) Vol. 13:9-10; ISSN 0196-6219; ISSN CESPD
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360603* -- Materials-- Properties
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
BENDING
CARBIDES
CARBON
CARBON COMPOUNDS
CHALCOGENIDES
COATINGS
COMPOSITE MATERIALS
CRYSTALS
DEFORMATION
DEPOSITION
DIMENSIONS
ELEMENTS
EXPANSION
FRACTURE MECHANICS
FRACTURE PROPERTIES
INTERFACES
MATERIALS
MECHANICAL PROPERTIES
MECHANICS
MONOCRYSTALS
NONMETALS
OXIDES
OXYGEN COMPOUNDS
REINFORCED MATERIALS
RESIDUAL STRESSES
SILICON CARBIDES
SILICON COMPOUNDS
STRESSES
SURFACE COATING
THERMAL EXPANSION
THICKNESS
WHISKERS