Fabrication of SiC whisker-reinforced SiC ceramics
A fabrication process of SiC whisker-reinforced SiC ceramics consisting of whisker CVD-coating for the control of interfacial bonding, slurry-pressing and HIP consolidation has been developed. Microstructural observation confirmed the incorporation of the interfacial carbon layer in the composites brought about remarkable whisker bridging/pull-out in the fracture. Whisker-bridging was considered to be a predominant toughening mechanism. To optimize the interfacial properties, the effect of coating conditions, i.e., amount of coating and CVD temperature, on the fracture toughness were studied. The effect of whisker diameter on the fracture toughness and anisotropy in the fracture toughness were also investigated. 12 refs.
- OSTI ID:
- 7110508
- 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
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Related Subjects
360601* -- Other Materials-- Preparation & Manufacture
360602 -- Other Materials-- Structure & Phase Studies
360603 -- Materials-- Properties
ANISOTROPY
CARBIDES
CARBON
CARBON COMPOUNDS
CHEMICAL COATING
CHEMICAL VAPOR DEPOSITION
COMPOSITE MATERIALS
CRYSTAL STRUCTURE
CRYSTALS
DEFORMATION
DEPOSITION
DISPERSIONS
ELEMENTS
FABRICATION
FRACTURE PROPERTIES
HOT PRESSING
LAYERS
MATERIALS
MATERIALS WORKING
MATRIX MATERIALS
MECHANICAL PROPERTIES
MICROSTRUCTURE
MIXTURES
MONOCRYSTALS
NONMETALS
PRESSING
SILICON CARBIDES
SILICON COMPOUNDS
SLURRIES
SURFACE COATING
SUSPENSIONS
WHISKERS