Boron carbide whisker and platelet reinforced ceramic matrix composites

Conference · Thu Oct 01 04:00:00 EDT 1992 · Ceramic Engineering and Science Proceedings; (United States)

OSTI ID:7039426

Liu, Jenq; Ownby, D; Weaver, S C

Boron carbide whisker and platelet-reinforced alumina and boron-carbide-whisker-reinforced silicon carbide composites were prepared by hot-pressing. The mechanical properties of hot-pressed boron carbide platelet and whisker-reinforced composites are better than the inherent ceramic matrix. A maximum fracture toughness, K(lc), of 9.5 MPa sq rt m is achieved for alumina/boron carbide whisker composites, 8.6 MPa sq rt m is achieved for alumina/boron carbide platelet composites, and 3.8 MPa sq rt m is achieved for silicon carbide/boron carbide whisker composites. The fracture toughness is dependent on the volume fraction of the platelets and whiskers. 12 refs.

• OSTI ID: 7039426
• Report Number(s): CONF-920144--
• Conference Information: Journal Name: Ceramic Engineering and Science Proceedings; (United States) Journal Volume: 13:9-10
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360603* -- Materials-- Properties
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
BORON CARBIDES
BORON COMPOUNDS
CARBIDES
CARBON COMPOUNDS
CHALCOGENIDES
COMPARATIVE EVALUATIONS
COMPOSITE MATERIALS
CRYSTALS
EVALUATION
FABRICATION
FRACTURE PROPERTIES
HOT PRESSING
MATERIALS
MATERIALS WORKING
MECHANICAL PROPERTIES
MONOCRYSTALS
OXIDES
OXYGEN COMPOUNDS
PLATES
PRESSING
SILICON CARBIDES
SILICON COMPOUNDS
WHISKERS