采用X射线光电子能谱(XPS)研究了表面氧化物的铀金属在低真空条件下加热后表面形成的银白色氧化膜的化学组成.结果表明,氧化膜的组成由表及里依次为:UO2+x,UO2和碳氧化铀UCxO1-x,其中立方密排结构的碳氧化铀相的存在是延缓铀在大气中腐蚀的关键因素.
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