| Popis: |
Preparation and characterisation of the carbides of uranium, plutonium and mixed uranium and plutonium form a part of advanced fuel development programs for fast breeder reactors. In the present study, the compositions of the phases of Pu-C-O and (U.Pu)-C-O systems have been determined by chemical analysis and lattice parameter measurement. The carbide samples have been prepared by vacuum carbothermic synthesis of tabletted oxide-graphite powder mixture. Dependence of stoichiometry of Pu 2 C 3 phase on the oxygen content of Pu(C,O) phase in Pu(C,O) + Pu 2 C 3 phase mixture has been evaluated. Stoichiometry and oxygen solubility of (U 0.3 Pu 0.7 )(C,O) phase in multiple phase mixture have been determined. Segregation of plutonium in (U,Pu) 2 C 3 phase of (U,Pu)(C,O) + (U,Pu) 2 C 3 phase mixture and its dependence on the oxygen content of (U,Pu)(C,O) phase have also been determined from the measurement of the lattice parameter of (U,Pu) 2 C 3 phase. |
