Radiation-induced amorphization resistance and radiation tolerance in structurally related oxides
Radiation-induced amorphization resistance and radiation tolerance in structurally related oxides
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DOI：
10.1038/nmat1842
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发表时间：
2007-03-01
期刊：
影响因子：
41.2
通讯作者：
Uberuaga, Blas P.
中科院分区：
文献类型：
--
作者：
Sickafus, Kurt E.;Grimes, Robin W.;Uberuaga, Blas P.
用于核反应堆或废物固定等恶劣环境的陶瓷必须具有高度耐用性，特别是耐辐射损伤效应。特别地，它们必须不倾向于非晶化或溶胀。很少有陶瓷符合这些标准，近年来，许多工作都致力于识别耐辐射陶瓷和提高耐辐射性的特性。在这里，我们研究的趋势，辐射损伤行为的化合物的晶体结构相关的家庭。具体来说，我们认为氧化物的结构与萤石晶体结构。我们证明，改进的非晶化电阻特性被发现在化合物中，有一个自然的倾向，以适应晶格无序。
Ceramics destined for use in hostile environments such as nuclear reactors or waste immobilization must be highly durable and especially resistant to radiation damage effects. In particular, they must not be prone to amorphization or swelling. Few ceramics meet these criteria and much work has been devoted in recent years to identifying radiation-tolerant ceramics and the characteristics that promote radiation tolerance. Here, we examine trends in radiation damage behaviour for families of compounds related by crystal structure. Specifically, we consider oxides with structures related to the fluorite crystal structure. We demonstrate that improved amorphization resistance characteristics are to be found in compounds that have a natural tendency to accommodate lattice disorder.