Processing and characterization of laminated SiC whisker reinforced Al2O3

Journal Article · Mon Apr 01 04:00:00 EST 1991 · Journal of Composite Materials; (United States)

OSTI ID:5517940

Kragness, E D; Amateau, M F; Messing, G L ^[1]

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1. Pennsylvania State University, University Park (USA)

Laminated silicon carbide (SiC) whisker/alumina (Al2O3) composites were fabricated by tape casting and hot pressing. Whisker loadings of 10 and 20 vol pct were produced with a predominance of fiber orientation in the direction of casting. Elastic, thermal, and mechanical properties of the composites were measured in the longitudinal and transverse directions. The elastic moduli for 10 and 20 whisker vol pct Al2O3 composites were approximately the same as unreinforced alumina. The coefficient of thermal expansion was reduced by the addition of the whiskers. The fracture toughness of the composites increased with whisker content from 3.8 MPa sq rt m for pure alumina to 8.0 MPa sq rt m for 20 vol pct whiskers in the longitudinal direction. 25 refs.

• OSTI ID: 5517940
• Journal Information: Journal of Composite Materials; (United States), Journal Name: Journal of Composite Materials; (United States) Vol. 25; ISSN JCOMB; ISSN 0021-9983
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360601* -- Other Materials-- Preparation & Manufacture
360603 -- Materials-- Properties
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CARBIDES
CARBON COMPOUNDS
CHALCOGENIDES
COMPOSITE MATERIALS
CRYSTALS
ELASTICITY
FABRICATION
FIBERS
FRACTURE PROPERTIES
HOT PRESSING
LOADING RATE
MATERIALS
MATERIALS WORKING
MECHANICAL PROPERTIES
MONOCRYSTALS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
PRESSING
SILICON CARBIDES
SILICON COMPOUNDS
TENSILE PROPERTIES
THERMODYNAMIC PROPERTIES
WHISKERS
YOUNG MODULUS