The XPS study on surface reactions of metal uraniumin carbon monoxide atmosphere

The surface reactions of metal uranium with CO at 25℃ and 200℃ have been studied by the X-ray photoelectron spectroscopy (XPS). Adsorption of CO on the surface oxide layer will result in the U4f peak shifting to lower binding energy and the decreasing of oxygen content in surface oxides. The O/U ratio is decreased with increasing the exposure of CO to the surface layer. The investigation indicates that the CO atmosphere can suppress further oxidation on the surface of metal uranium.

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