Differential scanning calorimetry of metamict Pu-substituted zirconolite

Journal Article · Sat Jan 01 00:00:00 EST 1983 · Mater. Res. Soc. Symp. Proc.; (United States)

OSTI ID:5490276

Peterson, D E; Clinard, Jr, F W

Samples of CaPuTi/sub 2/O/sub 7/ were prepared by cold pressing and sintering. Plutonium was substituted for zirconium in order to characterize radiation damage effects. The energy stored in a sample which had reached saturation in swelling after storage at ambient temperature was measured with a differential scanning calorimeter. The total energy of 6.6 +/- 0.1 cal/g is released over the range 485-715/sup 0/C. The activation energy of annealing of the damage is 1.22 +/- 0.05 eV. The temperature dependence of the rate constant is described by k/sub T/ = 5.96E4 exp(-1.22/k/sub B/T) s/sup -1/ where kB and T are the Boltzmann's constant and temperature (K) respectively. A sample stored at 600/sup 0/C was similarly evaluated and showed no release of stored energy to the precision of the apparatus (+/- 0.1 cal/g). These results are applied to analysis of waste incorporation in SYNROC and are correlated with analogous parameters for other materials. 21 references, 2 figures, 1 table.

• Research Organization: Los Alamos National Lab., NM
• OSTI ID: 5490276
• Journal Information: Mater. Res. Soc. Symp. Proc.; (United States), Vol. 15
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
SYNROC PROCESS
ZIRCONOLITE
PLUTONIUM ADDITIONS
RADIATION EFFECTS
ANNEALING
HIGH TEMPERATURE
STORED ENERGY
TEMPERATURE DEPENDENCE
ACTINIDE ALLOYS
ACTINIDE COMPOUNDS
ALKALINE EARTH METAL COMPOUNDS
ALLOYS
CALCIUM COMPOUNDS
CALCIUM OXIDES
CHALCOGENIDES
ENERGY
HEAT TREATMENTS
IRON COMPOUNDS
IRON OXIDES
MANAGEMENT
MINERALS
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
PLUTONIUM ALLOYS
PROCESSING
RADIOACTIVE WASTE PROCESSING
THERMODYNAMIC PROPERTIES
THORIUM COMPOUNDS
THORIUM OXIDES
TITANIUM COMPOUNDS
TITANIUM OXIDES
TRANSITION ELEMENT COMPOUNDS
WASTE MANAGEMENT
WASTE PROCESSING
ZIRCONIUM COMPOUNDS
ZIRCONIUM OXIDES
360206* - Ceramics
Cermets
& Refractories- Radiation Effects
052002 - Nuclear Fuels- Waste Disposal & Storage