High temperature alkali corrosion of ceramics in coal gas

Technical Report · Wed May 27 00:00:00 EDT 1992

DOI:https://doi.org/10.2172/5024999· OSTI ID:5024999

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: 5024999
• Report Number(s): DOE/PC/91309-T4; ON: DE92015867
• Country of Publication: United States
• Language: English

Related Subjects

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010402 -- Coal
Lignite
& Peat-- Purification & Upgrading
014000 -- Coal
Lignite
& Peat-- Combustion
20 FOSSIL-FUELED POWER PLANTS
200104 -- Fossil-Fueled Power Plants-- Components
36 MATERIALS SCIENCE
360202 -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
360205* -- Ceramics
Cermets
& Refractories-- Corrosion & Erosion
ALKALI METAL COMPOUNDS
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CARBIDES
CARBON COMPOUNDS
CERAMICS
CHALCOGENIDES
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
CORROSION
CORROSION RESISTANCE
DOCUMENT TYPES
EVALUATION
GLASS
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
KINETICS
MATERIALS
MINERALS
MULLITE
NITRIDES
NITROGEN COMPOUNDS
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
PHASE STUDIES
PNICTIDES
PROGRESS REPORT
REACTION KINETICS
SILICON CARBIDES
SILICON COMPOUNDS
SILICON NITRIDES
TEMPERATURE DEPENDENCE
TIME DEPENDENCE
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
ZIRCONIUM COMPOUNDS
ZIRCONIUM OXIDES