Abstract

Samples of titanate zirconate ceramics based on phases of the murataite-pyrochlore series are studied by XPS. The analysis of the surface was performed and the oxidation states of the elements were determined. A comparison of XPS results and data on the total composition of the samples was carried out. On the surface, compared to the bulk, the Ti and Th content is lower, but the Fe content is higher. Despite the introduction of uranium into the blend in the form of UO₂ or as uranyl nitrate, the samples contain approximately equal amounts of U(IV) and U(V). Iron is 93% Fe(III) and 7% Fe(II) forms.

中文翻译：

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XPS研究基于含硫和铀的村田－火绿系列的相钛酸锆陶瓷

摘要

通过XPS研究了基于murataite-pyrochlore系列的相的钛酸锆陶瓷样品。进行表面分析并确定元素的氧化态。对XPS结果和样品总成分数据进行了比较。在表面上，与块状相比，Ti和Th含量较低，而Fe含量较高。尽管将铀以UO ₂的形式或作为硝酸铀酰的形式引入混合物中，但样品中的U（IV）和U（V）含量大致相等。铁为93％的Fe（III）和7％的Fe（II）形式。