Abstracts and Available Papers Presented at the
1999 International RERTR Meeting
An Investigation on g-U Phase Stability and Thermal Compatibility
of Dispersion Fuel Meats
Prepared with Atomized U-16at.%Mo,
U-14at.%Mo-2at.%Ru and U-14at.%Mo-2at.%Os
Chang-Kyu
Kim, Ki-Hwan Kim, Yoon-Sang Lee, Soo-Bong Park
Korea
Atomic Energy Research Institute
Taejon, Korea
G. L. Hofman
Argonne National Laboratory
Argonne,
Illinois, USA
ABSTRACT
The g-U phase stability and the thermal compatibility of atomized U-16at.%Mo and U-14at.%Mo-2at.%X(: Ru, Os) dispersion fuel meats at an elevated temperature have been investigated. The atomized U-14at.%Mo-2at.%Os powder appeared to have longer decomposition time than the atomized U-16at.%Mo and U-14at.%Mo-2at.%Ru powders. The inter-diffusion of atomized U-14at.%Mo-2at.%Os particles with Al matrix were shown to form thinner and more uniform layers than the other alloy particles. The Al atoms seems to diffuse more easily along the decomposed lamella inter-phases than the cell boundaries of γphase. The addition of Os instead of Mo is expected to have a beneficial effect on increasing U-density of fuel due to better g-U phase stability and thermal compatibility.
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Contact:
Chang-Kyu Kim
Nuclear
Materials Development Department
Korea
Atomic Energy Research Institute
P.O.
Box 7, Daeduk-Danji
Taejon 305-606, Republic of Korea
Phone: 82 42 868 2309
Fax: 82 42 868
8346
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