Creep of plasma-sprayed-ZrO2 thermal-barrier coatings
Journal Article
·
· Ceram. Eng. Sci. Proc.; (United States)
- IIT Research Institute, Chicago, IL
Specimens of plasma-sprayed-zirconia thermal-barrier coatings with three different porosities and different initial particle sizes were deformed in compression at initial loads of 6900, 13,800, and 24,100 kPa (1000, 2000, and 3500 psi) and temperatures of 1100, 1250, and 1400 C. The coatings were stabilized with lime, MgO, and two different concentrations of Y2O3. Creep began as soon as the load was applied and continued at a constantly decreasing rate until the load was removed. Temperature and stabilization had a pronounced effect on creep rate while the stress, particle size, and porosity had a lesser effect. Creep deformation was due to cracking and particle sliding.
- OSTI ID:
- 5922359
- Journal Information:
- Ceram. Eng. Sci. Proc.; (United States), Journal Name: Ceram. Eng. Sci. Proc.; (United States) Vol. 3; ISSN CESPD
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360203* -- Ceramics
Cermets
& Refractories-- Mechanical Properties
CHALCOGENIDES
COATINGS
CREEP
CRYSTAL STRUCTURE
DATA
DESTRUCTIVE TESTING
EXPERIMENTAL DATA
GAS TURBINES
HIGH PRESSURE
INFORMATION
MACHINERY
MATERIALS TESTING
MECHANICAL PROPERTIES
MEDIUM PRESSURE
MICROSTRUCTURE
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
POROSITY
SPRAYED COATINGS
TEMPERATURE EFFECTS
TESTING
TRANSITION ELEMENT COMPOUNDS
TURBINES
TURBOMACHINERY
VERY HIGH TEMPERATURE
ZIRCONIUM COMPOUNDS
ZIRCONIUM OXIDES
360203* -- Ceramics
Cermets
& Refractories-- Mechanical Properties
CHALCOGENIDES
COATINGS
CREEP
CRYSTAL STRUCTURE
DATA
DESTRUCTIVE TESTING
EXPERIMENTAL DATA
GAS TURBINES
HIGH PRESSURE
INFORMATION
MACHINERY
MATERIALS TESTING
MECHANICAL PROPERTIES
MEDIUM PRESSURE
MICROSTRUCTURE
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
POROSITY
SPRAYED COATINGS
TEMPERATURE EFFECTS
TESTING
TRANSITION ELEMENT COMPOUNDS
TURBINES
TURBOMACHINERY
VERY HIGH TEMPERATURE
ZIRCONIUM COMPOUNDS
ZIRCONIUM OXIDES