Published November 1977
| Version v1
Journal article
Elastic properties of monoclinic hafnium oxide at room temperature
Description
The Young's and shear moduli of polycrystalline monoclinic hafnium oxide were determined by the sonic resonance method at room temperature as a function of volume fraction porosity. The Spriggs equation empirically described the data and the zero porosity moduli as 283.6 GN/m2 and 109.2 GN/m2 for Young's and shear moduli, respectively. The Debye temperature calculated from the elastic constants was 4840K. Several specimens had anomalously low moduli values, attributed to microcracking. Grain size and internal friction measurements showed that the microcracking occurred in specimens with grain sizes >2 to 3 μm and was characterized by high internal friction
Additional details
Publishing Information
- Journal Title
- J. Am. Ceram. Soc.
- Journal Volume
- 60
- Journal Issue
- 11-12
- Series
- J. Am. Ceram. Soc.
- Journal Page Range
- 488-490
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 10448228
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- CRACKS; DEBYE TEMPERATURE; GRAIN SIZE; HAFNIUM OXIDES; INTERNAL FRICTION; MECHANICAL PROPERTIES; POISSON RATIO; POROSITY; REFRACTORIES; SHEAR PROPERTIES; YOUNG MODULUS
- Descriptors DEC
- CHALCOGENIDES; CRYSTAL STRUCTURE; ELASTICITY; FRICTION; HAFNIUM COMPOUNDS; MICROSTRUCTURE; OXIDES; OXYGEN COMPOUNDS; SIZE; TENSILE PROPERTIES; TRANSITION ELEMENT COMPOUNDS