Influence of grain size on the strength of ceramics made from hafnium dioxide partly stabilized with yttrium oxide
Journal Article
·
· Refractories (Engl. Transl.); (United States)
The aim of this investigation was to study the mechanical properties of fine-grained ceramics of tetragonal hafnium dioxide with additions of yttrium oxide. The strength of fine-grained ceramics made from hafnium oxide with an addition of 3-5% Y/sub 2/O/sub 3/ largely depends on the size of the component grains. Ceramic with a grain size of about 1 ..mu..m containing 4% Y/sub 2/O/sub 3/ has a bending strength of about 480 N/mm/sup 2/, which is twice as high as for ceramics made of cubic HfO/sub 2/.
- OSTI ID:
- 5680929
- Journal Information:
- Refractories (Engl. Transl.); (United States), Journal Name: Refractories (Engl. Transl.); (United States) Vol. 28:3-4; ISSN REFRA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
360203 -- Ceramics
Cermets
& Refractories-- Mechanical Properties
CERAMICS
CHALCOGENIDES
COMPARATIVE EVALUATIONS
CRYSTAL LATTICES
CRYSTAL STRUCTURE
CRYSTAL-PHASE TRANSFORMATIONS
DISPERSIONS
FLEXURAL STRENGTH
GRAIN SIZE
HAFNIUM COMPOUNDS
HAFNIUM OXIDES
MATERIALS TESTING
MECHANICAL PROPERTIES
MECHANICAL TESTS
METALLURGICAL EFFECTS
MICROSTRUCTURE
MIXTURES
MONOCLINIC LATTICES
OXIDES
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
REFRACTORY METAL COMPOUNDS
SIZE
SOLID SOLUTIONS
SOLUTIONS
TEMPERATURE EFFECTS
TESTING
TETRAGONAL LATTICES
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES
ZIRCONIUM COMPOUNDS
ZIRCONIUM OXIDES
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
360203 -- Ceramics
Cermets
& Refractories-- Mechanical Properties
CERAMICS
CHALCOGENIDES
COMPARATIVE EVALUATIONS
CRYSTAL LATTICES
CRYSTAL STRUCTURE
CRYSTAL-PHASE TRANSFORMATIONS
DISPERSIONS
FLEXURAL STRENGTH
GRAIN SIZE
HAFNIUM COMPOUNDS
HAFNIUM OXIDES
MATERIALS TESTING
MECHANICAL PROPERTIES
MECHANICAL TESTS
METALLURGICAL EFFECTS
MICROSTRUCTURE
MIXTURES
MONOCLINIC LATTICES
OXIDES
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
REFRACTORY METAL COMPOUNDS
SIZE
SOLID SOLUTIONS
SOLUTIONS
TEMPERATURE EFFECTS
TESTING
TETRAGONAL LATTICES
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES
ZIRCONIUM COMPOUNDS
ZIRCONIUM OXIDES