Sintering study of hyperstichiometric powder compacts of UO_2+x-(6mol/100)PuO_2

摘要

The sintering of powder compacts of stoichiometric oxides of uranium and plutonium was required a treatment under Ar-H_2-H_2O (with PH_2/PH_2O=50) during 4 hours at 1700 deg.C. However, this temperature can be decreased if mixes oxides were maintained Hyperstoichiometric during all the shrinkage. In this study, the effect of hyperstoichiomtry on the sintering kinetics and activation energy of UO_2+x-PuO_2 powder compacts was investigated by using various oxidising atmospheres.