Method for manufacturing oxidic sintered nuclear fuel bodies

Details Method for manufacturing oxidic sintered nuclear fuel bodies Method for manufacturing oxidic sintered nuclear fuel bodies

G - Physics

21

C

31/89

G21C 3/62 (2006.01)

Patent

CA 1182995

ABSTRACT OF THE DISCLOSURE Method for the manufacture of oxidic sintered nuclear fuel bodies by compacting UO2-starting powder or a mixture of UO2- and PuO2 starting powder which contains up to 10% by weight rare-earth oxide, especially Gd2O3, as an additive into blanks and subsequent densification of these blanks by a heat treatment in a sintering atmosphere with reducing action. The UO2-starting powder used for compacting has a specific surface in the range of 2 to 4.5 m2/g and/or a mean crystallite diameter in the range of 80 nm to 250 nm, and the heat treatment in the sintering atmosphere with reducing action is carried out at a temperature in the range of 1,500°C to 1,750°C.

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