The Immobilization of Triuranium Octoxide by Gadolinium Zirconate

This research evaluated the generation of uranium-doped gadolinium zirconate pyrochlore by a high-temperature sintering method. The sintering temperature and holding time were adjusted in the fabricating course. The sintered samples were characterized by X-ray diffraction (XRD) and scanning electron microscopy. The study shows that uranium-doped gadolinium zirconate pyrochlore can be generated with sintering parameters of 1250°C and 72 h. Analysis with XRD indicates that the uranium-doped gadolinium zirconate pyrochlore has a fluorite structure.