Abstract
The nanostructure and phase evolution in low-temperature oxidized (40−250 °C), fine UO2 powders ( 1) were observed. Oxidation involves formation of higher uranium oxides in nanodomains near the grain surface which, initially, have a disordered defect structure (“disordered U4O9”). As oxidation progresses, domain growth increases and the longperiod modulated structure of U4O9 develops (“ordered U4O9”). A similar mechanism is understood to happen also in U3O7−z.
Original language | English |
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Pages (from-to) | 3915-3927 |
Journal | Inorganic Chemistry |
Volume | 55 |
DOIs | |
State | Published - 25 Mar 2016 |