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X-Ray Photoelectron Spectroscopic Study of the Surface Reaction of Uranium–Niobium Alloy with O2

Author

Listed:
  • Xiaoguo Fu

    (China Academy of Engineering Physics, PO Box 919-71, Mianyang, Sichuan, 621900, P. R. China)

  • Kezhao Liu

    (China Academy of Engineering Physics, PO Box 919-71, Mianyang, Sichuan, 621900, P. R. China)

  • Xiaolin Wang

    (China Academy of Engineering Physics, PO Box 919-71, Mianyang, Sichuan, 621900, P. R. China)

  • Zhengping Zhao

    (China Academy of Engineering Physics, PO Box 919-71, Mianyang, Sichuan, 621900, P. R. China)

  • Yong Yu

    (China Academy of Engineering Physics, PO Box 919-71, Mianyang, Sichuan, 621900, P. R. China)

Abstract

The initial oxidation of uranium–niobium alloy in oxygen atmosphere at 298 K has been studied by X-ray photoelectron spectroscopy (XPS). For comparison, the adsorption of oxygen on pure metal niobium and uranium has also been studied. The changes of U4f, Nb3d and O1s spectra duringin situoxidation indicate that the adsorption of oxygen on uranium–niobium alloy surfaces first leads to the formation of UO2and NbO; then NbO2and Nb2O5are detected with increasing exposures of oxygen. The segregations of U and Nb to the uranium–niobium alloy surfaces are observed at different oxidation stages. The oxide film formation of uranium–niobium alloy is faster than that of pure uranium at initial oxidation stages.

Suggested Citation

  • Xiaoguo Fu & Kezhao Liu & Xiaolin Wang & Zhengping Zhao & Yong Yu, 2003. "X-Ray Photoelectron Spectroscopic Study of the Surface Reaction of Uranium–Niobium Alloy with O2," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 10(02n03), pages 381-386.
    • Handle: RePEc:wsi:srlxxx:v:10:y:2003:i:02n03:n:s0218625x03004767
    DOI: 10.1142/S0218625X03004767
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    More about this item

    Keywords

    Uranium–niobium alloy; surface reaction; XPS; O2;
    All these keywords.

    JEL classification:

    • O2 - Economic Development, Innovation, Technological Change, and Growth - - Development Planning and Policy

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