THE DEVELOPMENT AND TESTING OF HOMOGENEOUS CERAMIC FUELS. Summary Report

Technical Report · Sun May 01 04:00:00 EDT 1960

OSTI ID:4833289

Studies were made on the formation of face-centered cubic solid solutions in the UO/sub 2/- ZrO/sub 2/-CaO and UO/sub 2/-CeO/sub 2/ systems upon sintering. An extensive series of facecentered cubic solid solutions was produced by sintering UO/sub 2/ and ZrO/sub 2/ pre-stabilized in cubic form with 10 wt% CaO. Stabilization of ZrO/sub 2/ with l5 or 20 wt% CaO produces some CaZrO/sub 3/ which, however, reacts with UO/sub 2/ contents of 25 to 50 wt % to form part of the homogeneous solid solution. Single-phase UO/sub2/-ZrO/sub 2/- CaO pellets containing up to 25 wt% UO/sub 2/were found to have excellent thermal resistance. Density, shrinkage, and weight loss for selected compositions vacuum- sintered at l800 deg C and heated in argon and in air at l000 deg C were measured. UO/sub 2/CeO/sub 2/ systems containing 20 and 40 wt % UO/sub 2/ were also found to form single-phase face-centered cubic structures upon being sintered. (D.L.C.)

• Research Organization: Combustion Engineering, Inc. Nuclear Div., Windsor, Conn.
• NSA Number: NSA-16-002672
• OSTI ID: 4833289
• Report Number(s): CEND-87; NYO-2991
• Country of Publication: United States
• Language: English

Related Subjects

AIR
ARGON
CALCIUM COMPOUNDS
CALCIUM OXIDES
CERAMICS
CERIUM OXIDES
CHEMICAL REACTIONS
DEFORMATION
DENSITY
EXPANSION
FABRICATION
FUEL ELEMENTS
FUELS
HEAT TREATMENTS
HEATING
HIGH TEMPERATURE
HOMOGENEOUS REACTORS
INERT GASES
LATTICES
LOSSES
MATERIALS TESTING
MEASURED VALUES
MECHANICAL PROPERTIES
METALLURGY
PELLETS
POWER PLANTS
REACTOR TECHNOLOGY
SHRINKAGE
SINTERED MATERIALS
SINTERING
SOLID SOLUTIONS
STABILITY
THERMAL STRESSES
URANIUM DIOXIDE
VACUUM
VOLUME
WEIGHT
ZIRCONIUM COMPOUNDS
ZIRCONIUM OXIDES