Wear and wear transition in silicon carbide ceramics during sliding
- Korea Research Inst. of Standards and Science, Taejon (Korea, Republic of)
- Kyungpook National Univ., Taegu (Korea, Republic of)
Wear and wear transition in silicon carbide ceramics during sliding have been investigated. Three different microstructures, i.e., solid-state-sintered silicon carbide, liquid-phase-sintered silicon carbide, and a liquid-phase-sintered SiC-TiB{sub 2} composite, were produced by hot pressing. Wear data and examinations of worn surfaces showed that the wear behavior of these silicon carbide ceramics was significantly different. In the solid-state-sintered silicon carbide, the wear occurred by a grooving process. In the liquid-phase-sintered silicon carbide and composite, on the other hand, an abrupt transition in the wear mechanism from an initial grooving process to a grain pullout process occurred during the test. The transition occurred significantly earlier in the composite than in the carbide. The different wear behavior in these silicon carbide ceramics is discussed in relation to the grain or interphase boundary strength.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 253563
- Journal Information:
- Journal of the American Ceramic Society, Journal Name: Journal of the American Ceramic Society Journal Issue: 5 Vol. 79; ISSN 0002-7820; ISSN JACTAW
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ALUMINIUM OXIDES
BORON CARBIDES
BULK DENSITY
COMPOSITE MATERIALS
FLEXURAL STRENGTH
FRACTURE PROPERTIES
GRAIN BOUNDARIES
HOT PRESSING
MICROSTRUCTURE
PARTICLE SIZE
POWDERS
SCANNING ELECTRON MICROSCOPY
SILICON CARBIDES
TITANIUM BORIDES
TRANSMISSION ELECTRON MICROSCOPY
WEAR RESISTANCE
X-RAY DIFFRACTION