Stability of a ZrO2/Y2O3/ thermal barrier coating in turbine fuel with contaminants
Conference
·
· J. Eng. Power; (United States)
OSTI ID:6858372
The corrosion behavior of recently developed plasma sprayed duplex thermal barrier coating systems, consisting of Udimet-5000 alloy metal substrate bond coat and ZrO2 stabilized with 12 wt percent Y2O3 overcoat, has been evaluated in environments of utility turbines burning liquid fuels. The base fuel, GT-2, was doped with sodium, vanadium and sulfur, and burned in a gas turbine simulator which contained the coated, air-cooled specimens. The coatings were satisfactory combustion gases obtained by burning clean GT-2 fuel oil and containing 1 ppm Na. However, in the presence of vanadium in the fuel, the ZrO2-12wt%Y2O3 oxide coating showed severe cracking, chipping and spalling.
- Research Organization:
- Westinghouse Research and Development Center, Pittsburgh, PA
- OSTI ID:
- 6858372
- Report Number(s):
- CONF-790305-
- Conference Information:
- Journal Name: J. Eng. Power; (United States) Journal Volume: 102
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
20 FOSSIL-FUELED POWER PLANTS
200100* -- Fossil-Fueled Power Plants-- Power Plants & Power Generation
CHALCOGENIDES
CHEMICAL ANALYSIS
COATINGS
COMBUSTION PRODUCTS
CORROSION PROTECTION
CORROSION RESISTANCE
DEPOSITION
ENGINES
GAS TURBINE ENGINES
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
OXIDES
OXYGEN COMPOUNDS
PERFORMANCE TESTING
PLASMA ARC SPRAYING
PROTECTIVE COATINGS
SPRAY COATING
STABILITY
SURFACE COATING
TESTING
THERMAL INSULATION
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES
ZIRCONIUM COMPOUNDS
ZIRCONIUM OXIDES
200100* -- Fossil-Fueled Power Plants-- Power Plants & Power Generation
CHALCOGENIDES
CHEMICAL ANALYSIS
COATINGS
COMBUSTION PRODUCTS
CORROSION PROTECTION
CORROSION RESISTANCE
DEPOSITION
ENGINES
GAS TURBINE ENGINES
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
OXIDES
OXYGEN COMPOUNDS
PERFORMANCE TESTING
PLASMA ARC SPRAYING
PROTECTIVE COATINGS
SPRAY COATING
STABILITY
SURFACE COATING
TESTING
THERMAL INSULATION
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES
ZIRCONIUM COMPOUNDS
ZIRCONIUM OXIDES