High temperature alkali corrosion of ceramics in coal gas. Quarterly progress report No. 4, June 1, 1992--August 31, 1992

Technical Report · Sat Aug 29 00:00:00 EDT 1992

DOI:https://doi.org/10.2172/10183057· OSTI ID:10183057

Pickrell, G R; Sun, T; Brown, J J

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: 10183057
• Report Number(s): DOE/PC/91309-T5; ON: DE93000902
• Resource Relation: Other Information: PBD: 29 Aug 1992
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
01 COAL, LIGNITE, AND PEAT
CERAMICS
CORROSION
SODIUM CARBONATES
PHASE STUDIES
ZIRCONIUM OXIDES
SILICON CARBIDES
PROGRESS REPORT
TIME DEPENDENCE
SODIUM NITRATES
CORROSIVE EFFECTS
VAPORS
TEMPERATURE RANGE 1000-4000 K
EXPERIMENTAL DATA
360205
014000
010400
CORROSION AND EROSION
COMBUSTION
PROCESSING