G - Physics – 21 – C
Patent
G - Physics
21
C
G21C 3/42 (2006.01) B22F 9/10 (2006.01) C22C 1/04 (2006.01) G21C 3/60 (2006.01)
Patent
CA 2282330
This invention comprises of high-density fuels dispersed with atomized spherical particles and the fuel fabrication processes. Comparing with the conventional method, this has many advantages for the direct formation of meta-stable .gamma. -U phase, the process simplification, the minimization of fabrication space, the improvements of production yield, fuel productivity, powder purity and fuel formability, a higher thermal conductivity in real heat flow direction, the decrease of as-fabricated porosity, and a smaller thermal swelling. Uranium and alloying metals are charged in a heat-resistant crucible having a stopper and a small orifice. The atomizer chamber is evacuated up to the vacuum degree of above 10 -3 torr using vacuum pumps. Uranium and alloying metals charged in the crucible are melted by vacuum induction or arc heating. The alloy melt is fed through a nozzle onto a rotating disk. Then melt droplets are formed and spread by the centrifugal force of rotating disk. The flying fine droplets are cooled rapidly (above 10 4 °C /sec in cooling rate) under an inert atmosphere of argon or helium gas due to the large specific surface area. 9
Jang Se-Jung
Kim Chang-Kyu
Kim Eng-Soo
Kim Ki-Hwan
Kuk Il-Hyun
Korea Atomic Energy Research Institute
Korea Electric Power Corporation
Sim & Mcburney
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