Elastic properties of UO/sub 2/ at high pressure

Journal Article · Fri Oct 01 04:00:00 EDT 1976 · J. Appl. Phys.; (United States)

DOI:https://doi.org/10.1063/1.322438· OSTI ID:7343475

Fritz, I J

The elastic constants of UO/sub 2/ have been measured as a function of pressure up to 20 kbar (2.0 GPa) at 23 degreeC. To within experimental uncertainty, the constants are linear functions of pressure, and no pressure-induced phase transitions occur in this 20-kbar pressure range. The elastic constant data are used to estimate the various polycrystalline elastic moduli and their pressure dependences, and the zero-pressure moduli are compared with data from polycrystalline material. Isothermal moduli are calculated from the adiabatic values. The elastic-constant data are also used to discuss the separation of the ''pure'' volume and temperature contributions to the (isobaric) temperature dependences of the elastic constants as well as to estimate the Gruneisen constant, Debye temperature, and equation of state of this material. (AIP)

• Research Organization: Sandia Laboratories, Albuquerque, New Mexico 87115
• OSTI ID: 7343475
• Journal Information: J. Appl. Phys.; (United States), Journal Name: J. Appl. Phys.; (United States) Vol. 47:10; ISSN JAPIA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360203* -- Ceramics
Cermets
& Refractories-- Mechanical Properties
ACTINIDE COMPOUNDS
CHALCOGENIDES
DEBYE TEMPERATURE
ELASTICITY
EQUATIONS
EQUATIONS OF STATE
GRUENEISEN CONSTANT
MECHANICAL PROPERTIES
OXIDES
OXYGEN COMPOUNDS
PRESSURE DEPENDENCE
TEMPERATURE DEPENDENCE
TENSILE PROPERTIES
URANIUM COMPOUNDS
URANIUM DIOXIDE
URANIUM OXIDES
VERY HIGH PRESSURE