Influence of grain size on the strength of ceramics made from hafnium dioxide partly stabilized with yttrium oxide

Journal Article · Sun Nov 01 00:00:00 EST 1987 · Refractories (Engl. Transl.); (United States)

DOI:https://doi.org/10.1007/BF01400774· OSTI ID:5680929

Pliner, S Yu; Peichev, V G; Komolikov, Yu I

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), Vol. 28:3-4; Other Information: Translated from Ogneupory; 28: No. 3, 27-29(Mar 1987)
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
HAFNIUM OXIDES
CRYSTAL-PHASE TRANSFORMATIONS
FLEXURAL STRENGTH
GRAIN SIZE
TEMPERATURE EFFECTS
YTTRIUM OXIDES
CERAMICS
COMPARATIVE EVALUATIONS
MECHANICAL TESTS
METALLURGICAL EFFECTS
MONOCLINIC LATTICES
SOLID SOLUTIONS
TETRAGONAL LATTICES
ZIRCONIUM OXIDES
CHALCOGENIDES
CRYSTAL LATTICES
CRYSTAL STRUCTURE
DISPERSIONS
HAFNIUM COMPOUNDS
MATERIALS TESTING
MECHANICAL PROPERTIES
MICROSTRUCTURE
MIXTURES
OXIDES
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
REFRACTORY METAL COMPOUNDS
SIZE
SOLUTIONS
TESTING
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
ZIRCONIUM COMPOUNDS
360202* - Ceramics
Cermets
& Refractories- Structure & Phase Studies
360203 - Ceramics
Cermets
& Refractories- Mechanical Properties