Guo H.-J.,P. O. Box 150 11 24 |
Li S.-J.,P. O. Box 150 11 24 |
Zhang R.,P. O. Box 150 11 24 |
Hui X.-L.,P. O. Box 150 11 24
Wuli Huaxue Xuebao/ Acta Physico - Chimica Sinica | Year: 2015
Surface corrosion of uranium metal during storage for 10 years in an inert gas atmosphere was examined. The factors causing uranium metal surface oxidation, spontaneous combustion, and etch pit formation were investigated using X-ray photoelectron spectroscopy (XPS), energy-dispersive X-ray spectroscopy (EDS), and X-ray diffraction (XRD). The results show that the main factors are the iron concentration in the uranium, the long-term and sealed storage conditions, and chemical behaviors of intermediates in the storage environment. UO2 and U3O8 cause etch pits, and the hydrogenation reaction product UH3 combusts spontaneously on exposure to air. © Editorial office of Acta Physico-Chimica Sinica.