Tailoring of properties of SiC whisker-oxide matrix composites

Conference · Fri Jan 01 04:00:00 EST 1988

OSTI ID:6749097

Tiegs, T N

Alumina and mullite reinforced with SiC whiskers have shown improved toughness and strength. The improvements are a result of crack-whisker interactions, such as crack bridging and deflection. The effectiveness of the interactions has been found to be functions of both the whisker physical characteristics and the surface chemistry. The important physical characteristics discussed are the diameter of the whiskers as well as the extraneous particulates associated with them. The whisker surface chemistry influences the bonding at the whisker-matrix interface. High toughness is observed when the bonding is limited and debonding can occur along the interface during crack propagation. 13 refs., 7 figs., 1 tab.

• Research Organization: Oak Ridge National Lab., TN (USA)
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 6749097
• Report Number(s): CONF-881125-1; ON: DE88016344
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360603* -- Materials-- Properties
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CARBIDES
CARBON COMPOUNDS
CHALCOGENIDES
COMPOSITE MATERIALS
CRACK PROPAGATION
CRYSTAL STRUCTURE
CRYSTALS
FLEXURAL STRENGTH
FRACTURE PROPERTIES
INORGANIC ION EXCHANGERS
INTERFACES
ION EXCHANGE MATERIALS
MATERIALS
MECHANICAL PROPERTIES
MICROSTRUCTURE
MINERALS
MONOCRYSTALS
MULLITE
OPTIMIZATION
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
SILICON CARBIDES
SILICON COMPOUNDS
SURFACE TREATMENTS
WHISKERS