PHASE EQUILIBRIA IN THE SYSTEMS NaF-PuF$sub 3$ AND NaF-CeF$sub 3$

Journal Article · Wed Nov 01 04:00:00 EST 1961 · J. Inorg. & Nuclear Chem.

DOI:https://doi.org/10.1016/0022-1902(61)80456-9· OSTI ID:4832962

Barton, C J; Redman, J D; Strehlow, R A

Phase equilibrium relations in the system NaF--PuF/sub 3/ were determined by thermal analysis and microscopic examination of the slowly-cooled fused mixtures. This system was investigated because of interest in possible use of mixtures in the systems NaF--BeF/sub /-PuF/sub 3/ and NaF -LiFous studies indicated that the solubility of PuF/sub 3/ in such mixtures at proposed reactor operating temperatures is adequate for reactor designs currently under consideration. A similar study of the NaF--CeF/sub 3/ system carried out in conjunction with the NaF --PuF/sub 3/ study served to test hightemperature thermal analysis apparatus, which is discussed. It also provided data needed to complete a phase diagram based on earlier studies of the system in this Laboratory. The NaF-PuF/sub 3/ system was found to have one eutectic composition containing about 24 mole% PuF/sub 3/ melting at 727 plus or minus 3 deg C and one compound, NaF -PuF/sub 3/, melting incongruently at 842 plus or minus 3 deg C. Similarly, the NaF -CeF/sub 3/ system was found to have one eutectic composition containing about 28 mole% CeF/sub 3/ melting at 726 plus or minus 3 deg C and one compound, NaF -CeF/sub 3/, melting incongruently at 810 plus or minus 10 deg C. (auth)

• Research Organization: Oak Ridge National Lab., Tenn.
• NSA Number: NSA-16-002939
• OSTI ID: 4832962
• Journal Information: J. Inorg. & Nuclear Chem., Journal Name: J. Inorg. & Nuclear Chem. Vol. Vol: 20
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

BERYLLIUM FLUORIDES
CERIUM FLUORIDES
CHEMISTRY
EUTECTICS
EXPANSION
FUSED SALT FUEL
FUSED SALTS
LITHIUM FLUORIDES
MICROSCOPY
PHASE DIAGRAMS
PLUTONIUM FLUORIDES
POWER PLANTS
SODIUM FLUORIDES
SOLUBILITY
THERMAL ANALYSIS