A review of the mechanisms, reaction products and parameters affecting uranium corrosion in water
A review of the mechanisms, reaction products and parameters affecting uranium corrosion in water
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DOI：
10.1016/j.ccr.2021.213899
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发表时间：
2021-07
影响因子：
20.6
通讯作者：
A. Banos;R. Burrows;T. Scott
中科院分区：
文献类型：
--
作者：
A. Banos;R. Burrows;T. Scott
本文综述了近65年来铀在水中腐蚀机理的研究进展。对铀和水之间反应的不同阶段发生的过程进行了仔细的检查，包括最初的抛物线反应和随后的“线性”反应阶段。对影响反应动力学和机理的参数如压力、温度、气体和样品杂质、pH值、热预处理和合金化都分别进行了讨论。对铀腐蚀试验的电化学结果进行了评价。所产生的固体反应产物，主要是UO2和UH3的物理和化学特性，广泛报道现有的文献和讨论。审查使用现有的文献，强调条件下，散装氢化物的形成是有利的，更有可能发生，从而帮助描绘条件或存储的情况下，最好避免，以帮助防止氢化物形成的核废物中含有金属铀。
This work conducts a review on reported mechanisms of uranium corrosion in water for studies carried out over the past 65 years. Close examination of the processes occurring in the distinct stages of the reaction between uranium and water was performed, including the initial parabolic and then ‘linear’ stages of reaction. Parameters that affect the kinetics and mechanism of the reaction such as pressure, temperature, gas and sample impurities, pH, thermal pre-treatment and alloying are all discussed separately. Electrochemistry results of uranium corrosion tests are also evaluated. The physical and chemical characteristics of the arising solid reaction products, primarily UO2and UH3, are extensively reported for existing literature and discussed. The review uses the available literature to highlight the conditions under which bulk-hydride formation is favoured and more likely to occur, thereby helping to delineate conditions or storage scenarios that are best avoided to help prevent hydride formation in nuclear wastes containing metallic uranium.