Irradiation-induced reduction of microcracking in zirconolite
/sup 238/Pu-substituted zirconolite (CaPuTi/sub 2/O/sub 7/) was stored near ambient temperature for 231 days, equivalent to an alpha decay dose of 3.1x10/sup 25/ ..cap alpha../m/sup 3/ or 3x10/sup 5/ years of storage time for SYNROC ceramic nuclear waste. Periodic indentation testing showed that hardness was decreased by alpha decay-induced conversion to the metamict state, while fracture toughness and resistance to cracking were increased, apparently as a consequence of the formation of a heterogeneous microstructure. These results imply improved stability of this nuclear waste phase as a result of self-irradiation damage. 21 references, 4 figures.
- Research Organization:
- Los Alamos National Lab., NM (USA)
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 6449469
- Report Number(s):
- LA-UR-84-3383; CONF-841157-8; ON: DE85002410
- Country of Publication:
- United States
- Language:
- English
Similar Records
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Related Subjects
052002 -- Nuclear Fuels-- Waste Disposal & Storage
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
36 MATERIALS SCIENCE
360202 -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
360206* -- Ceramics
Cermets
& Refractories-- Radiation Effects
ACTINIDE COMPOUNDS
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
ALKALINE EARTH METAL COMPOUNDS
ALPHA DECAY RADIOISOTOPES
CALCIUM COMPOUNDS
CALCIUM OXIDES
CHALCOGENIDES
CRYSTAL STRUCTURE
CRYSTAL-PHASE TRANSFORMATIONS
DATA
DOPED MATERIALS
EVEN-EVEN NUCLEI
EXPERIMENTAL DATA
FRACTURE PROPERTIES
HARDNESS
HEAVY NUCLEI
HIGH-LEVEL RADIOACTIVE WASTES
INFORMATION
IRON COMPOUNDS
IRON OXIDES
IRRADIATION
ISOTOPES
MATERIALS
MECHANICAL PROPERTIES
MICROSTRUCTURE
MINERALS
NUCLEI
NUMERICAL DATA
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
PHYSICAL RADIATION EFFECTS
PLUTONIUM 238
PLUTONIUM ISOTOPES
RADIATION EFFECTS
RADIOACTIVE MATERIALS
RADIOACTIVE WASTES
RADIOISOTOPES
ROCKS
SELF-IRRADIATION
SYNTHETIC MATERIALS
SYNTHETIC ROCKS
THORIUM COMPOUNDS
THORIUM OXIDES
TITANIUM COMPOUNDS
TITANIUM OXIDES
TRANSITION ELEMENT COMPOUNDS
WASTES
YEARS LIVING RADIOISOTOPES
ZIRCONIUM COMPOUNDS
ZIRCONIUM OXIDES
ZIRCONOLITE
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
36 MATERIALS SCIENCE
360202 -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
360206* -- Ceramics
Cermets
& Refractories-- Radiation Effects
ACTINIDE COMPOUNDS
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
ALKALINE EARTH METAL COMPOUNDS
ALPHA DECAY RADIOISOTOPES
CALCIUM COMPOUNDS
CALCIUM OXIDES
CHALCOGENIDES
CRYSTAL STRUCTURE
CRYSTAL-PHASE TRANSFORMATIONS
DATA
DOPED MATERIALS
EVEN-EVEN NUCLEI
EXPERIMENTAL DATA
FRACTURE PROPERTIES
HARDNESS
HEAVY NUCLEI
HIGH-LEVEL RADIOACTIVE WASTES
INFORMATION
IRON COMPOUNDS
IRON OXIDES
IRRADIATION
ISOTOPES
MATERIALS
MECHANICAL PROPERTIES
MICROSTRUCTURE
MINERALS
NUCLEI
NUMERICAL DATA
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
PHYSICAL RADIATION EFFECTS
PLUTONIUM 238
PLUTONIUM ISOTOPES
RADIATION EFFECTS
RADIOACTIVE MATERIALS
RADIOACTIVE WASTES
RADIOISOTOPES
ROCKS
SELF-IRRADIATION
SYNTHETIC MATERIALS
SYNTHETIC ROCKS
THORIUM COMPOUNDS
THORIUM OXIDES
TITANIUM COMPOUNDS
TITANIUM OXIDES
TRANSITION ELEMENT COMPOUNDS
WASTES
YEARS LIVING RADIOISOTOPES
ZIRCONIUM COMPOUNDS
ZIRCONIUM OXIDES
ZIRCONOLITE