Microstructural evolution in a ZrO/sub 2/-12 wt% Y/sub 2/O/sub 3/ ceramic

Journal Article · Thu Aug 01 00:00:00 EDT 1985 · Am. Ceram. Soc. Bull.; (United States)

DOI:https://doi.org/10.1111/j.1151-2916.1985.tb10169.x· OSTI ID:6343595

Chaim, R; Heuer, A H; Ruhle, M

Several unusual microstructural features, i.e., 90 /sup 0/ tetragonal ZrO/sub 2/ twins containing antiphase domain boundaries, tetragonal ZrO/sub 2/ precipitates in a colony morphology, and precipitate free zones at the perimeter of cubic ZrO/sub 2/ grains containing fine tetragonal ZrO/sub 2/ precipitates, were observed in a single ZrO/sub 2/. 12 wt% Y/sub 2/O/sub 3/ ceramic annealed at 1550/sup 0/, 1400/sup 0/, and 1250/sup 0/C, respectively. The type of phase transformation responsible for each microstructural feature is described.

• Research Organization: Department of Materials Engineering, Technion, Haifa
• OSTI ID: 6343595
• Journal Information: Am. Ceram. Soc. Bull.; (United States), Journal Name: Am. Ceram. Soc. Bull.; (United States) Vol. 68:8; ISSN ACSBA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
ANNEALING
CERAMICS
CHALCOGENIDES
CRYSTAL LATTICES
CRYSTAL STRUCTURE
CRYSTAL-PHASE TRANSFORMATIONS
CRYSTALLOGRAPHY
HEAT TREATMENTS
MICROSTRUCTURE
OXIDES
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
TETRAGONAL LATTICES
TRANSITION ELEMENT COMPOUNDS
VERY HIGH TEMPERATURE
YTTRIUM COMPOUNDS
YTTRIUM OXIDES
ZIRCONIUM COMPOUNDS
ZIRCONIUM OXIDES