CHARACTERISTICS OF SUBSTOICHIOMETRIC URANIA (UO$sub 2$-x) AT ELEVATED TEMPERATURES
Metaliographic examination of UO/sub 2/ heated to 2000 deg C in H/sub 2/ or He and then cooled to room temperature showed two phases, UO/sub 2/ and free U. Experiments were made at 2200 to 2600 deg C to correlate the volatility of UO/ sub 2/ with the degree of oxygen deficiency. The results showed that the final composition at 2400 deg C was UO/sub 1.88/ in H/sub 2/, and U/sup 1.94/ in He and tha t the mechanism of substoichiometry is by volatilization of uranium oxides. Indirect evidence is presented for the nonexistence of free U metal at 2400 deg C. (D.L.C.)
- Research Organization:
- General Electric Co. Advanced Technology Services, Cincinnati
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AT(40-1)-2847
- NSA Number:
- NSA-17-035677
- OSTI ID:
- 4667422
- Report Number(s):
- CONF-39-87; TM-63-7-12
- Country of Publication:
- United States
- Language:
- English
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