THE DEVELOPMENT AND TESTING OF HOMOGENEOUS CERAMIC FUELS. Progress Report for Period December 1, 1959-February 29, 1960

Technical Report · Mon Oct 31 04:00:00 EST 1960

OSTI ID:4171386

Zuromsky, G

Results of x-ray diffraction and microscopic evaluations of UO/sub 2/-- CaO-- ZrC/sub 2/ compositions sintered in vacuum at 1500 to 1900 deg C are discussed. A continuous series of facecentered cubic solutions was found at 1700 deg C and higher. CaZrO/sub 3/ is present as a second phase in all compositions containing 15 and 20 wt.% CaO and in low UO/sub 2/ compositions. Changes of sintering atmosphere, involving the use of air, argon, or vacuum, and changes in the cooling rate after sintering had no effect on the "d" spacings for various compositions in the system. Data on density, shrinkage, weight change, and structures are included on specimens in the UC/sub 2/-- ZrO/sub 2/--CaO series which were sintered at 1800 deg C to produce face-centered cubic solid solutions, and isothermally heated at 1000 deg C in air for 28 days. Structures in the UC/ sub 21/--CeO/sub 2/ system were also investigated by sintering in air, argon, and vacuum. (For preceding period see NYO-2742.) (J.R.D.)

• Research Organization: Combustion Engineering, Inc. Nuclear Div., Windsor, Conn. Page(s): 36
• NSA Number: NSA-14-014051
• OSTI ID: 4171386
• Report Number(s): CEND-84; NYO-2990
• Country of Publication: United States
• Language: English

Related Subjects

AIR
ARGON
CALCIUM OXIDES
CERAMICS
CERIUM OXIDES
COOLING
DEFORMATION
DENSITY
DIFFRACTION
FUELS
HIGH TEMPERATURE
INERT GASES
LATTICES
MATERIALS TESTING
METALS, CERAMICS, AND OTHER MATERIALS
MICROSCOPY
PHASE DIAGRAMS
PLANNING
SHRINKAGE
SINTERING
URANIUM DIOXIDE
VACUUM
VARIATIONS
VOLUME
WEIGHT
X RADIATION
ZIRCONIUM OXIDES