Tensile creep rupture behavior of alumina-based polycrystalline oxide fibers
Conference
·
· Ceramic Engineering and Science Proceedings; (United States)
OSTI ID:7293733
Creep rupture tests have been performed on single filaments of 'Fiber FP' Al2O3 at 1150-1250 C and 'PRD-166' Al2O3-ZrO2 at 1150-1300 C. It is noted that, under similar conditions of applied stress and temperature, Al2O3 fiber creep rates were up to four times greater than those of Al2O3-ZrO2. Experimental creep rates were found to be slower than those calculated via Coble's (1963) constitutive relationship and faster than the rate calculated with the interface reaction-controlled relation of Burton (1972). The creep of these fibers therefore appears to be controlled by an interface reaction-limited grain-boundary diffusional process. 12 refs.
- OSTI ID:
- 7293733
- Report Number(s):
- CONF-920144--
- Conference Information:
- Journal Name: Ceramic Engineering and Science Proceedings; (United States) Journal Volume: 13:7-8
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360203* -- Ceramics
Cermets
& Refractories-- Mechanical Properties
360603 -- Materials-- Properties
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CALCULATION METHODS
CHALCOGENIDES
COMPARATIVE EVALUATIONS
COMPOSITE MATERIALS
CREEP
CRYSTAL STRUCTURE
CRYSTALS
DIFFUSION
EVALUATION
FAILURES
FIBERS
GRAIN BOUNDARIES
INTERFACES
MATERIALS
MATERIALS TESTING
MECHANICAL PROPERTIES
MECHANICAL TESTS
MICROSTRUCTURE
OXIDES
OXYGEN COMPOUNDS
POLYCRYSTALS
RUPTURES
TEMPERATURE RANGE
TEMPERATURE RANGE 1000-4000 K
TESTING
TRANSITION ELEMENT COMPOUNDS
ZIRCONIUM COMPOUNDS
ZIRCONIUM OXIDES
360203* -- Ceramics
Cermets
& Refractories-- Mechanical Properties
360603 -- Materials-- Properties
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CALCULATION METHODS
CHALCOGENIDES
COMPARATIVE EVALUATIONS
COMPOSITE MATERIALS
CREEP
CRYSTAL STRUCTURE
CRYSTALS
DIFFUSION
EVALUATION
FAILURES
FIBERS
GRAIN BOUNDARIES
INTERFACES
MATERIALS
MATERIALS TESTING
MECHANICAL PROPERTIES
MECHANICAL TESTS
MICROSTRUCTURE
OXIDES
OXYGEN COMPOUNDS
POLYCRYSTALS
RUPTURES
TEMPERATURE RANGE
TEMPERATURE RANGE 1000-4000 K
TESTING
TRANSITION ELEMENT COMPOUNDS
ZIRCONIUM COMPOUNDS
ZIRCONIUM OXIDES