Single-crystal elastic constants of yttria-stabilized zirconia in the range 20/sup 0/ to 700/sup 0/C
Elastic constants of single crystals of yttria-stabilized zirconia were determined through the temperature range 20/phi/ to 700/sup 0/C. Crystals containing 8.1, 11.1, 12.1, 15.5, and 17.9 mol% Y/sub 2/O/sub 3/ were measured. The elastic constant C/sub 11/ was found to decrease and C/sub 12/ and C/sub 44/ to increase with increasing Y/sub 2/O/sub 3/ content; this appears to be due to decreasing coulombic interaction as Y/sup 3 +/ replaces Zr/sup 4 +/. Except for the 8.1 mol% Y/sub 2/O/sub 3/ crystal, the conventional elastic constants all showed normal monotonic decreases with increasing temperature. In the case of the 8.1 mol% Y/sub 2/O/sub 3/ crystal, measurements as a function of temperature were not reproducible, and it is likely that this composition at room temperature is below the composition limit of thermodynamic stability of the cubic fluorite phase.
- Research Organization:
- Ames Laboratory, USDOE, and Department of Materials Science and Engineering, Iowa State University, Ames, Iowa
- OSTI ID:
- 5041973
- Journal Information:
- J. Am. Ceram. Soc.; (United States), Journal Name: J. Am. Ceram. Soc.; (United States) Vol. 67:5; ISSN JACTA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ALKALINE EARTH METAL COMPOUNDS
CALCIUM COMPOUNDS
CALCIUM FLUORIDES
CALCIUM HALIDES
CHALCOGENIDES
CRYSTALS
ELASTICITY
FLUORIDES
FLUORINE COMPOUNDS
FLUORITE
FUNCTIONS
HALIDE MINERALS
HALIDES
HALOGEN COMPOUNDS
HIGH TEMPERATURE
MECHANICAL PROPERTIES
MEDIUM TEMPERATURE
MINERALS
MONOCRYSTALS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
RESPONSE FUNCTIONS
TEMPERATURE EFFECTS
TENSILE PROPERTIES
THERMODYNAMIC PROPERTIES
THERMOELASTICITY
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES
ZIRCONIUM COMPOUNDS
ZIRCONIUM OXIDES