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Wang Xiaolin, Fu Yibei, Xie Renshou. Effect of Oxide Layer Structure on the Surface Reaction of Uranium Metal in CO/H2 Atmospheres[J]. Analysis and Testing Technology and Instruments, 1998, (1): 29-35.
Citation: Wang Xiaolin, Fu Yibei, Xie Renshou. Effect of Oxide Layer Structure on the Surface Reaction of Uranium Metal in CO/H2 Atmospheres[J]. Analysis and Testing Technology and Instruments, 1998, (1): 29-35.
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Effect of Oxide Layer Structure on the Surface Reaction of Uranium Metal in CO/H2 Atmospheres

    Abstract
  • The surface reactions of different oxide layers on uranium with CO at 25℃ and H2 at 200℃ have been studied by X-ray photoelectron spectroscopy (XPS) respectively. After CO and H2 adsorption on the surface oxide layer, the content of oxygen in the surface oxide is decreased and O/U ratio decreases with increasing the exposure of gases to the surface layer. The effect of reduction on metal surface is more obviously with increasing of oxide layer thickness. But the influence of H2 is less than CO.It may lead to the hydriding reaction of uranium in hydrogen atmosphere at 200℃ when the oxide layer thickness is decreased and uranium oxidation state is lower.
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