Properties of (Y)ZrO/sub 2/ - Al/sub 2/O/sub 3/ and (Y)ZrO/sub 2/ - Al/sub 2/O/sub 3/ - (Ti or Si)C composites
Journal Article
·
· J. Am. Ceram. Soc.; (United States)
The effect of Al/sub 2/O/sub 3/ and (Ti or Si) C additions on various properties of a (Y)TZP (yttria-stabilized tetragonal zirconia polycrystal)-Al/sub 2/O/sub 3/-(Ti or Si)C ternary composite ceramic were investigated for developing a zirconia-based ceramic stronger than SiC at high temperatures. Adding Al/sub 2/O/sub 3/ to (Y)TZP improved transverse rupture strength and hardness to decreased fracture toughness. This binary composite ceramic revealed a rapid loss of strength with increasing temperature. Adding TiC to the binary ceramic suppressed the decrease in strength at temperatures above 1573K. The residual tensile stress induced by the differential thermal expansion between ZrO/sub 2/ and TiC therefore must have inhibited the t- /omega/-mZrO/sub 2/ martensitic transformation. It was concluded that a continuous skeleton of TiC prevented grain-boundary sliding between ZrO/sub 2/ and Al/sub 2/O/sub 3/.
- Research Organization:
- Research and Development Dept., Toshiba Tungaloy, 8 Shinsugita, isogo-ku, Yokohama (JP)
- OSTI ID:
- 5833908
- Journal Information:
- J. Am. Ceram. Soc.; (United States), Journal Name: J. Am. Ceram. Soc.; (United States) Vol. 72:2; ISSN JACTA
- Country of Publication:
- United States
- Language:
- English
Similar Records
Processing and mechanical behavior of Al{sub 2}O{sub 3}/ZrO{sub 2} nanocomposites
Effect of coating structure on the adherence of sputter-deposited oxide coatings. [ZrO/sub 2/-Y/sub 2/O/sub 3/; Al/sub 2/O/sub 3/-Cr/sub 2/O/sub 3/]
Strong ceramic in the Al/sub 2/O/sub 3/-ZrO/sub 2/-Y/sub 2/O/sub 3/ system
Journal Article
·
Sat Jan 31 23:00:00 EST 1998
· Materials Research Bulletin
·
OSTI ID:605690
Effect of coating structure on the adherence of sputter-deposited oxide coatings. [ZrO/sub 2/-Y/sub 2/O/sub 3/; Al/sub 2/O/sub 3/-Cr/sub 2/O/sub 3/]
Conference
·
Thu Mar 31 23:00:00 EST 1983
·
OSTI ID:6016928
Strong ceramic in the Al/sub 2/O/sub 3/-ZrO/sub 2/-Y/sub 2/O/sub 3/ system
Journal Article
·
Tue Sep 01 00:00:00 EDT 1987
· Refractories (Engl. Transl.); (United States)
·
OSTI ID:5390039
Related Subjects
36 MATERIALS SCIENCE
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
360203 -- Ceramics
Cermets
& Refractories-- Mechanical Properties
360204 -- Ceramics
Cermets
& Refractories-- Physical Properties
ALLOYS
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CARBIDES
CARBON ADDITIONS
CARBON COMPOUNDS
CHALCOGENIDES
CRYSTAL LATTICES
CRYSTAL STRUCTURE
EXPANSION
FRACTURE PROPERTIES
GRAIN BOUNDARIES
HIGH TEMPERATURE
IRON ALLOYS
MARTENSITE
MECHANICAL PROPERTIES
MICROSTRUCTURE
OXIDES
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
SILICON CARBIDES
SILICON COMPOUNDS
TETRAGONAL LATTICES
THERMAL EXPANSION
TITANIUM CARBIDES
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
ZIRCONIUM COMPOUNDS
ZIRCONIUM OXIDES
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
360203 -- Ceramics
Cermets
& Refractories-- Mechanical Properties
360204 -- Ceramics
Cermets
& Refractories-- Physical Properties
ALLOYS
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CARBIDES
CARBON ADDITIONS
CARBON COMPOUNDS
CHALCOGENIDES
CRYSTAL LATTICES
CRYSTAL STRUCTURE
EXPANSION
FRACTURE PROPERTIES
GRAIN BOUNDARIES
HIGH TEMPERATURE
IRON ALLOYS
MARTENSITE
MECHANICAL PROPERTIES
MICROSTRUCTURE
OXIDES
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
SILICON CARBIDES
SILICON COMPOUNDS
TETRAGONAL LATTICES
THERMAL EXPANSION
TITANIUM CARBIDES
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
ZIRCONIUM COMPOUNDS
ZIRCONIUM OXIDES