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DEVELOPMENT OF PLUTONIUM BEARING FUEL MATERIALS. Progress Report for period July 1 through September 30, 1961

Technical Report ·
DOI:https://doi.org/10.2172/4807381· OSTI ID:4807381

Data are tabulated for the characteristic parameters of PuO/sub 2/ powders prepared by the continuous oxalate precipitation process. The results show that the PuO/sub 2/ surface area decreases almost linearly with calcination hold times at 760 deg C. A thermogravimetric study of the decomposition of Pu oxalate indicate the formation of an initial stable compound at ~ l00 deg C and a stable intermediate at ~ 300 deg C. Characteristic data are tabulated for UO/sub 2/ -5% PuO/sub 2/ and UO/sub 2/-20% PuO/sub 2/ powders prepared by coprecipitation. Preliminary blending studies giving a final UO/sub 2/ -0.5% PuO/ sub 2/ powder show that a more homogeneous product is obtained if two powders of the same surface area are used. Results are given for preliminary studies of the direct preparation of high-density coarse particles. A study was made of the simultaneous determination of Pu and U by differential spectrophotometry. Sintering studies were made on PuO/sub 2/ and on both mechanically mixed and coprecipitated PuO/sub 2/UO/sub 2/; the results indicate that the blending and mixing procedures are unsatisfactory. The eutectoid-like microstructure observed in sintered PuO/sub 2/ pellets appear to be Pu/sub 2/O/sub 3/. Preliminary preparations of sintered PuO/sub 2/ spheres coated with Ni are rcpcrted. (D.L.C.)

Research Organization:
Nuclear Materials and Equipment Corp., Apollo, Penna.
NSA Number:
NSA-16-004985
OSTI ID:
4807381
Report Number(s):
NUMEC-P-80
Country of Publication:
United States
Language:
English

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Related Subjects

CALCINATION
COATING
COMPACTING
DECOMPOSITION
DENSITY
EFFICIENCY
EUTECTICS
FABRICATION
FAILURES
FISSIONABLE MATERIALS
FUEL ELEMENTS
FUELS
GRAIN SIZE
HIGH TEMPERATURE
HOMOGENEOUS REACTORS
MATERIALS TESTING
METALLURGY
MIXING
NICKEL
OXALATES
PELLETS
PHOTOMETRY
PLUTONIUM
PLUTONIUM COMPOUNDS
PLUTONIUM OXIDES
POWDERS
POWER PLANTS
PRECIPITATION
PRODUCTION
PYROLYSIS
QUALITATIVE ANALYSIS
REACTOR TECHNOLOGY
REPROCESSING
SEPARATION PROCESSES
SINTERED MATERIALS
SINTERING
SPECTROSCOPY
SPHERES
STABILITY
SURFACES
TABLES
URANIUM
URANIUM DIOXIDE