High temperature alkali corrosion of ceramics in coal gas

Technical Report · Fri Feb 28 23:00:00 EST 1992

OSTI ID:5324673

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 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: 5324673
• Report Number(s): DOE/PC/91309-T3; ON: DE92013905
• 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
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CARBIDES
CARBON COMPOUNDS
CARBONACEOUS MATERIALS
CERAMICS
CHALCOGENIDES
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
COAL
COMBUSTION
CORROSION
CORROSION RESISTANCE
DOCUMENT TYPES
ENERGY SOURCES
ENGINES
EQUIPMENT
FOSSIL FUELS
FUELS
GAS TURBINES
GLASS
HEAT ENGINES
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
KINETICS
MACHINERY
MATERIALS
MINERALS
MULLITE
NITRIDES
NITROGEN COMPOUNDS
OXIDATION
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
PNICTIDES
PROCESSING
PROGRESS REPORT
REACTION KINETICS
SILICON COMPOUNDS
SILICON NITRIDES
THERMOCHEMICAL PROCESSES
TITANATES
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
TURBINES
TURBOMACHINERY
ZIRCONIUM COMPOUNDS
ZIRCONIUM OXIDES