High temperature alkali corrosion of ceramics in coal gas. Quarterly progress report No. 3, March 1, 1992--May 31, 1992
High temperature alkali corrosion has been known to cause premature failure of ceramic components used in advanced high temperature coal combustion systems such as coal gasification and clean-up, coal fired gas turbines, and high efficiency heat engines. The objective of this research is to systematically evaluate the alkali corrosion resistance of the most commonly used structural ceramics including silicon carbide, silicon nitride, cordierite, mullite, alumina, aluminum titanate, zirconia, and fireclay glass. The study consists of identification of the alkali reaction products (phase equilibria) and the kinetics of the alkali reactions as a function of temperature and time.
- Research Organization:
- Virginia Polytechnic Inst. and State Univ., Blacksburg, VA (United States). Center for Advanced Ceramic Materials
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- FG22-91PC91309
- OSTI ID:
- 10154693
- Report Number(s):
- DOE/PC/91309-T4; ON: DE92015867
- Resource Relation:
- Other Information: PBD: 27 May 1992
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
01 COAL, LIGNITE, AND PEAT
20 FOSSIL-FUELED POWER PLANTS
CERAMICS
CORROSION
CORROSION RESISTANCE
EVALUATION
PROGRESS REPORT
ALKALI METAL COMPOUNDS
SILICON CARBIDES
SILICON NITRIDES
MULLITE
ALUMINIUM OXIDES
ALUMINIUM COMPOUNDS
TITANIUM COMPOUNDS
ZIRCONIUM OXIDES
GLASS
PHASE STUDIES
CHEMICAL REACTION KINETICS
TIME DEPENDENCE
TEMPERATURE DEPENDENCE
360205
360202
010402
014000
200104
CORROSION AND EROSION
STRUCTURE AND PHASE STUDIES
PURIFICATION AND UPGRADING
COMBUSTION
COMPONENTS
01 COAL, LIGNITE, AND PEAT
20 FOSSIL-FUELED POWER PLANTS
CERAMICS
CORROSION
CORROSION RESISTANCE
EVALUATION
PROGRESS REPORT
ALKALI METAL COMPOUNDS
SILICON CARBIDES
SILICON NITRIDES
MULLITE
ALUMINIUM OXIDES
ALUMINIUM COMPOUNDS
TITANIUM COMPOUNDS
ZIRCONIUM OXIDES
GLASS
PHASE STUDIES
CHEMICAL REACTION KINETICS
TIME DEPENDENCE
TEMPERATURE DEPENDENCE
360205
360202
010402
014000
200104
CORROSION AND EROSION
STRUCTURE AND PHASE STUDIES
PURIFICATION AND UPGRADING
COMBUSTION
COMPONENTS