Performance of ceramic-ceramic composites in an industrial waste incinerator
Book
·
OSTI ID:70112
- Babcock and Wilcox, Lynchburg, VA (United States)
- Oak Ridge National Lab., TN (United States)
An advanced heat exchanger has been designed for high temperature, highly corrosive applications. The design is based on the use of ceramic composite components to assure long life and reliability. A prototype unit has been built and will be field tested in a waste incinerator facility. Candidate ceramic composite materials were exposed to the incinerator flue gases in order to predict their performance. Test samples consisted of continuous fiber reinforced ceramic composites (CFCCs), and a particulate silicon carbide (SiC{sub p}) reinforced alumina composite. Alumina matrix CFCCs in some cases exhibited much better strength retention than in earlier tests. Zirconia matrix CFCCS, on the other hand, showed lower strength retention; fiber damage due to corrosion was observed only in the zirconia matrix materials. Fiber damage was observed in both types of fibers investigated: high purity alumina and alumina-20% zirconia. The SiC{sub p} reinforced alumina composite showed excellent strength retention following the test. This was due to the suppression of the formation of aluminum oxide nodules on the surface. In earlier tests oxide nodules had acted as stress concentrators, causing substantial strength loss.
- DOE Contract Number:
- FC02-89ID12868
- OSTI ID:
- 70112
- Report Number(s):
- CONF-940222--
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
09 BIOMASS FUELS
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
36 MATERIALS SCIENCE
ALUMINIUM OXIDES
COMBUSTION
COMPOSITE MATERIALS
CORROSION RESISTANCE
CORROSIVE EFFECTS
EXPERIMENTAL DATA
FLUE GAS
HAZARDOUS MATERIALS
HEAT EXCHANGERS
HEAT RESISTANT MATERIALS
INCINERATORS
INDUSTRIAL WASTES
MECHANICAL PROPERTIES
MICROSTRUCTURE
POROSITY
REINFORCED MATERIALS
SILICON CARBIDES
ZIRCONIUM OXIDES
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
36 MATERIALS SCIENCE
ALUMINIUM OXIDES
COMBUSTION
COMPOSITE MATERIALS
CORROSION RESISTANCE
CORROSIVE EFFECTS
EXPERIMENTAL DATA
FLUE GAS
HAZARDOUS MATERIALS
HEAT EXCHANGERS
HEAT RESISTANT MATERIALS
INCINERATORS
INDUSTRIAL WASTES
MECHANICAL PROPERTIES
MICROSTRUCTURE
POROSITY
REINFORCED MATERIALS
SILICON CARBIDES
ZIRCONIUM OXIDES