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SINTERING STUDIES ON THE SYSTEM UO$sub 2$-PuO$sub 2$. II. SINTERABILITY

Technical Report ·
OSTI ID:4171382
Sinterability, as defined by final sintered density, was investigated for the system UO/sub 2/--PuO/sub 2/ as a function of time, temperature, and type of PuO/sub 2/ addition. Uranium dioxide containing UO/sub 2/-- PuO/sub 2/ solid solution type additions results in greater densification rates than does UO/sub 2/ containing UO/sub 2/-- PuO/sub 2/ physical mixture type additions. Solid solutions formed by sintering, when ground and re-sintered, also densify more rapidly than do two phase mixtures. A mechanism explaining these differences in rates is proposed. X-ray diffraction data indicates that homogeneous single phase formation is virtually complete after eight hours at 1500 deg C or one hour at 1600 deg C. No reduction of plutonium dioxide to a sub oxide during heating in hydrogen was observed. (auth)
Research Organization:
General Electric Co. Hanford Atomic Products Operation, Richland, Wash.
DOE Contract Number:
AT(45-1)-1350
NSA Number:
NSA-14-014057
OSTI ID:
4171382
Report Number(s):
HW-63081
Country of Publication:
United States
Language:
English

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