| 铀铌合金在O_2气氛中氧化初期的XPS研究 |
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| 引用本文： | 伏晓国,刘柯钊,汪小琳,柏朝茂,赵正平.铀铌合金在O_2气氛中氧化初期的XPS研究[J].核技术,2001(10). |
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| 作者姓名： | 伏晓国 刘柯钊 汪小琳 柏朝茂 赵正平 |
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| 作者单位： | 中国工程物理研究院 绵阳621900
(伏晓国，刘柯钊，汪小琳，柏朝茂)，中国工程物理研究院 绵阳621900(赵正平) |
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| 基金项目： | 中国工程物理研究院基金 (990 5 6 7) |
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| 摘 要： | 采用X射线光电子能谱 (XPS)分析研究了 2 98K时铀铌合金的清洁表面在O2 气氛中的原位氧化过程。通过分析反应各阶段U4f ,Nb3d和O1s谱峰的变化 ,揭示了O2 在铀铌合金表面吸附解离后 ,优先与表面Nb原子和U原子结合生成NbO、UO2 -x和UO2 ,然后NbO进一步氧化为NbO2 和Nb2 O5,在氧化的不同阶段U和Nb分别向表面偏析
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| 关 键 词： | X射线光电子能谱 铀铌合金 O_2 |
Study on the initial oxidation of uranium-niobium alloy in oxygen atmosphere by XPS |
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| FU Xiaoguo,LIU Kezhao,WANG Xiaolin,BAI Chaomao,ZHAO Zhengping.Study on the initial oxidation of uranium-niobium alloy in oxygen atmosphere by XPS[J].Nuclear Techniques,2001(10). |
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| Authors: | FU Xiaoguo LIU Kezhao WANG Xiaolin BAI Chaomao ZHAO Zhengping |
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| Abstract: | The initial oxidation of uranium-niobium alloy in oxygen atmosphere at 298K was studied by X-ray photoelectron spectroscopy. The changes of U4f,Nb3d and O1s spectrum during in-situ oxidation indicated that the adsorption of oxygen on uranium-niobium alloy surface first led to the formation of UO 2, UO 2- x and NbO, then NbO 2 and Nb 2O 5 were detected with increasing exposure of oxygen. The segregation of uranium and niobium to the surface was observed at different oxidation stages. |
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| Keywords: | X-ray photoelectron spectroscopy Uranium-niobium alloy Oxygen |
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