High temperature alkali corrosion of ceramics in coal gas

Technical Report · Sat Aug 29 04:00:00 EDT 1992

DOI:https://doi.org/10.2172/7162665· OSTI ID:7162665

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: DOE; USDOE, Washington, DC (United States)
• DOE Contract Number: FG22-91PC91309
• OSTI ID: 7162665
• Report Number(s): DOE/PC/91309-T5; ON: DE93000902
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010400 -- Coal
Lignite
& Peat-- Processing
014000 -- Coal
Lignite
& Peat-- Combustion
36 MATERIALS SCIENCE
360205* -- Ceramics
Cermets
& Refractories-- Corrosion & Erosion
ALKALI METAL COMPOUNDS
CARBIDES
CARBON COMPOUNDS
CARBONATES
CERAMICS
CHALCOGENIDES
CHEMICAL REACTIONS
CORROSION
CORROSIVE EFFECTS
DATA
DOCUMENT TYPES
EXPERIMENTAL DATA
FLUIDS
GASES
INFORMATION
NITRATES
NITROGEN COMPOUNDS
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PHASE STUDIES
PROGRESS REPORT
SILICON CARBIDES
SILICON COMPOUNDS
SODIUM CARBONATES
SODIUM COMPOUNDS
SODIUM NITRATES
TEMPERATURE RANGE
TEMPERATURE RANGE 1000-4000 K
TIME DEPENDENCE
TRANSITION ELEMENT COMPOUNDS
VAPORS
ZIRCONIUM COMPOUNDS
ZIRCONIUM OXIDES