The design and properties of ceramics reinforced by whiskers and similar microstructural features
Whiskers impart considerable toughening and provide increased resistance to strength degradation during service due to thermal stresses, crack growth, and contact or impact damage. Whisker-reinforced ceramics also exhibit improvements in strength and toughness that are retained over a broad temperature range. Furthermore, reinforcements that resist deformation at elevated temperatures, e.g., SiC whiskers, result in substantial improvements in creep resistance of ceramics. However, successful design of toughened ceramics must consider the material properties and characteristics which control the toughening response and related mechanical properties. This paper reviews the design concepts for ceramics reinforced with discontinuous phases and the influence of such reinforcements on a variety of mechanical properties. 39 refs, 13 figs.
- Research Organization:
- Oak Ridge National Lab., TN (United States)
- Sponsoring Organization:
- DOE; USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 6986253
- Report Number(s):
- CONF-9210182-1; ON: DE93001372
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
360203* -- Ceramics
Cermets
& Refractories-- Mechanical Properties
360603 -- Materials-- Properties
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CARBIDES
CARBON COMPOUNDS
CERAMICS
CHALCOGENIDES
CRACK PROPAGATION
CRACKS
CREEP
CRYSTAL STRUCTURE
CRYSTALS
DOCUMENT TYPES
FRACTURE PROPERTIES
GRAIN SIZE
MATERIALS
MECHANICAL PROPERTIES
MICROSTRUCTURE
MONOCRYSTALS
NITRIDES
NITROGEN COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PNICTIDES
REINFORCED MATERIALS
REVIEWS
SILICON CARBIDES
SILICON COMPOUNDS
SILICON NITRIDES
SIZE
WHISKERS