Study on Surface Structure of Uranium Under Atmosphere Using X-ray Diffraction

ZHANG Yan-zhi, WANG Xiao-lin, GUAN Wei-jun, CHEN Yong-zhong, LAI Xin-chun, WANG Qin-guo(China Academy of Engineering Physics, P.O.Box 919-71, Mianyang 621900, China)

doi:10.7538/yzk.2003.37.04.0353

ZHANG Yan-zhi, WANG Xiao-lin, GUAN Wei-jun, CHEN Yong-zhong, LAI Xin-chun, WANG Qin-guo(China Academy of Engineering Physics, P.O.Box 919-71, Mianyang 621900, China). Study on Surface Structure of Uranium Under Atmosphere Using X-ray Diffraction[J]. Atomic Energy Science and Technology, 2003, 37(4): 353-353. DOI: 10.7538/yzk.2003.37.04.0353

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Study on Surface Structure of Uranium Under Atmosphere Using X-ray Diffraction

ZHANG Yan-zhi, WANG Xiao-lin, GUAN Wei-jun, CHEN Yong-zhong, LAI Xin-chun, WANG Qin-guo(China Academy of Engineering Physics, P.O.Box 919-71, Mianyang 621900, China)

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The surface structure of uranium under atmosphere is studied by Xray diffraction(XRD)and Rietveld method. The twostep process, a fast step followed by a much slower step, of the UO2 growth kinetics is observed in the present experiment. The fast step is assumed to be a diffusioncontrolled oxidation reaction, and the UO2 growth in the slower step is linear. The atomic coordination, y, in the metal uranium is unstable, and increase gradually during oxidation.

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Study on Surface Structure of Uranium Under Atmosphere Using X-ray Diffraction

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