Kinetics of the oxidation of Ba/sub 2/YCu/sub 3/O/sub x/ ceramics
Journal Article
·
· J. Mat. Res.; (United States)
OSTI ID:6976467
The kinetics of the oxidation of dense and porous samples of Ba/sub 2/YCu/sub 3/O/sub x/ ceramic have been determined by gravimetric analysis at 400--700 /sup 0/C. At 600 /sup 0/C and above, the rate decreases as the thickness of the oxidized layer increases. At 500 /sup 0/C and below, the kinetics show a linear relation that indicates that the oxidized layer does not protect the ceramic. Dilatometric, microscopic, and high-temperature x-ray data suggest that fractures in the oxide layer at the lower temperatures are caused by the large volume decrease that accompanies the change in oxygen stoichiometry.
- Research Organization:
- ATandT Bell Laboratories, Murray Hill, New Jersey 07974
- OSTI ID:
- 6976467
- Journal Information:
- J. Mat. Res.; (United States), Journal Name: J. Mat. Res.; (United States) Vol. 3:4; ISSN JMREE
- Country of Publication:
- United States
- Language:
- English
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Mon May 23 00:00:00 EDT 1988
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OSTI ID:5256081
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Conference
·
Wed Jul 01 00:00:00 EDT 1987
· Advanced Ceramic Materials; (USA)
·
OSTI ID:5058264
Related Subjects
36 MATERIALS SCIENCE
360205* -- Ceramics
Cermets
& Refractories-- Corrosion & Erosion
ALKALINE EARTH METAL COMPOUNDS
ANNEALING
BARIUM COMPOUNDS
BARIUM OXIDES
CERAMICS
CHALCOGENIDES
CHEMICAL ANALYSIS
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
COPPER COMPOUNDS
COPPER OXIDES
GRAVIMETRIC ANALYSIS
HEAT TREATMENTS
HIGH TEMPERATURE
KINETICS
LAYERS
MATERIALS
OXIDATION
OXIDES
OXYGEN COMPOUNDS
POROUS MATERIALS
QUANTITATIVE CHEMICAL ANALYSIS
REACTION KINETICS
SAMPLE PREPARATION
STOICHIOMETRY
TEMPERATURE DEPENDENCE
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES
360205* -- Ceramics
Cermets
& Refractories-- Corrosion & Erosion
ALKALINE EARTH METAL COMPOUNDS
ANNEALING
BARIUM COMPOUNDS
BARIUM OXIDES
CERAMICS
CHALCOGENIDES
CHEMICAL ANALYSIS
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
COPPER COMPOUNDS
COPPER OXIDES
GRAVIMETRIC ANALYSIS
HEAT TREATMENTS
HIGH TEMPERATURE
KINETICS
LAYERS
MATERIALS
OXIDATION
OXIDES
OXYGEN COMPOUNDS
POROUS MATERIALS
QUANTITATIVE CHEMICAL ANALYSIS
REACTION KINETICS
SAMPLE PREPARATION
STOICHIOMETRY
TEMPERATURE DEPENDENCE
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES