Method for producing oxidic sintered nuclear fuel bodies

摘要

UO2 base powder exhibiting any specific surface and crystallite diameter properties is mixed with rare earth (SE) oxide-containing powder, the particles of which exhibit at least in one surface layer, a crystal lattice of the fluorite type, with the stoichiometric composition (SE0.5, U0.5) 02.00 and/or form it in sintering; and is compacted to form compacts which are sintered in a gas atmosphere with reducing action at 1500 DEG C. to 1750 DEG C. to form high-density sintered bodies.