High-temperature behavior of silicon carbide, sialon, and aluminum oxide ceramics in coal and residual-oil slags
Effects of exposure of commercial silicon carbide, aluminum oxide, and sialon ceramic tubes at T approx. = 1200 to 1220/sup 0/C to the combustion products of No. 6 residual fuel oil and a coal-oil mixture containing 10 wt % bituminous coal suspended in a No. 6 oil were determined via two separate exposure experiments. The exposure time for both of these experiments was about 500 h, and air was blown through the inside of the tubes while the hot gases flowed over the outside. When the ash came only from residual oil, the fracture strength of siliconized SiC when subsequently measured at 25/sup 0/C increased, while that of sintered alpha SiC decreased about 30% and that for CVD SiC was essentially unchanged.
- Research Organization:
- Oak Ridge National Lab., TN (USA)
- DOE Contract Number:
- W-7405-ENG-26
- OSTI ID:
- 6504478
- Report Number(s):
- CONF-810528-3
- Resource Relation:
- Conference: 83. symposium on nucleation and crystallization in glasses, Washington, DC, USA, 3 May 1981
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ALUMINIUM OXIDES
FRACTURE PROPERTIES
PERMEABILITY
CERAMICS
SILICON CARBIDES
COAL
HELIUM
OILS
THERMAL EXPANSION
TUBES
VERY HIGH TEMPERATURE
ALUMINIUM COMPOUNDS
CARBIDES
CARBON COMPOUNDS
CARBONACEOUS MATERIALS
CHALCOGENIDES
ELEMENTS
ENERGY SOURCES
EXPANSION
FLUIDS
FOSSIL FUELS
FUELS
GASES
MATERIALS
MECHANICAL PROPERTIES
NONMETALS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
RARE GASES
SILICON COMPOUNDS
360203* - Ceramics
Cermets
& Refractories- Mechanical Properties