Microstructural evolution in Ca-PSZ and the room-temperature instability of tetragonal ZrO/sub 2/

Journal Article · Wed Apr 01 04:00:00 EST 1987 · J. Am. Ceram. Soc.; (United States)

DOI:https://doi.org/10.1111/j.1151-2916.1987.tb04970.x· OSTI ID:5741751

Dickerson, R M; Swain, M V; Heuer, A H

Microstructural evolution of a 7.8 mol% Ca-PSZ, fired at 1870/sup 0/C and subsequently aged at 1300/sup 0/C, was studied and correlated with the mechanical properties. The morphology, rafting, and subsequent coarsening of the tetragonal (t) ZrO/sub 2/ precipitates were of particular interest, as was the instability of some of the t-ZrO/sub 2/ particles during room-temperature aging. Precipitate coarsening kinetics (Ostwald ripening) was also studied. Over the limited time range studied (136 h), the interface reaction dominated the kinetics.

• Research Organization: Dept. of Metallurgy and Materials Science, Case Western Reserve Univ., Cleveland, OH 44106
• OSTI ID: 5741751
• Journal Information: J. Am. Ceram. Soc.; (United States), Journal Name: J. Am. Ceram. Soc.; (United States) Vol. 70:4; ISSN JACTA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
360203 -- Ceramics
Cermets
& Refractories-- Mechanical Properties
AMBIENT TEMPERATURE
CHALCOGENIDES
CHEMICAL REACTION KINETICS
CRYSTAL STRUCTURE
HEAT TREATMENTS
INSTABILITY
KINETICS
MECHANICAL PROPERTIES
MICROSTRUCTURE
OXIDES
OXYGEN COMPOUNDS
REACTION KINETICS
STABILITY
STRUCTURAL CHEMICAL ANALYSIS
TRANSITION ELEMENT COMPOUNDS
VERY HIGH TEMPERATURE
ZIRCONIUM COMPOUNDS
ZIRCONIUM OXIDES