PHASE EQUILIBRIA IN THE NaF-BeF$sub 2$-UF$sub 4$ TERNARY FUSED SALT SYSTEM
Technical Report
·
OSTI ID:4840490
The phase equilibrium diagram presented for the ternary fused-salt system NaF-- BeF/sub 2/-- UF/sub 4/ is based on evidence from differential thermal analysis, polarizing light microscopy, and x-ray examination of small samples obtained from thermal gradient quenching experiments, and from high- temperature filtration experiments. All the stable compounds in the binary systems NaF-- BeF/sub 2/ and NaF-- UF/sub 4/ displayed primary phase fields in the temary system, including a new subsolidus compound which was observed and tentatively assigned the formula, NaF--4UF/sub 4/. No ternary compounds or solid solutions were formed. The following three eutectics were found in the ternary system: 72.5 (mole%) NaF -- 17.0 BeF/sub 2/-- 10.5 UF/sub 4/, 485 deg C; 56.0 (mole%) NaF -- 43.5 BeF/sub 2/-- 0.5 UF/sub 4/, 339 deg C; and 43.5 (mole%) NaF -- 56.0 BeF/sub 2/-- 0.5 UF/sub 4/, 345 deg C. (auth)
- Research Organization:
- Mound Lab., Miamisburg, Ohio
- DOE Contract Number:
- AT(33-1)-GEN-53
- NSA Number:
- NSA-15-029705
- OSTI ID:
- 4840490
- Report Number(s):
- MLM-1081
- Country of Publication:
- United States
- Language:
- English
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