Method for the manufacture of oxidic sintered nuclear fuel bodie

Details Method for the manufacture of oxidic sintered nuclear fuel bodie Method for the manufacture of oxidic sintered nuclear fuel bodie

1982-10-25

1986-03-25

Gron, Teddy S.

Plastic and nonmetallic article shaping or treating: processes

Shaping or treating radioactive material

252637, 252639, 252643, 423261, G21C 2100

Patent

active

045782296

ABSTRACT:
Method for the manufacture of oxidic nuclear fuel bodies by a heat treatment of blanks obtained from UO.sub.2 starting power or a mixture of UO.sub.2 and PuO.sub.2 starting powder at a treatment temperature in the range of 1000.degree. C. to 1400.degree. initially in a gas atmosphere with oxidizing action and subsequently in a gas atmosphere with reducing action. The oxygen potential of the gas atmosphere with oxidizing action is kept in a range in which a crystallographically demonstrable U.sub.4 O.sub.9 or (U, Pu).sub.4 O.sub.9 crystal phase is generated in the blanks during the heating to the treatment temperature in this gas atmosphere with oxidizing action.

REFERENCES:
patent: 3194852 (1965-07-01), Lloyd et al.
patent: 3927154 (1975-12-01), Carter
patent: 4053559 (1977-10-01), Hart et al.
patent: 4348339 (1982-09-01), Assmann et al.
"Solid State Communications", vol. 5, pp. 349-352, 1967, Pergamon Press, Great Britain.
"Le Journal de Physique", vol. 25, pp. 431-439, 1964.

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