Corrosion of uranium in liquid water under vacuum contained conditions. Part 1: The initial binary U + H2O(l) system
Corrosion of uranium in liquid water under vacuum contained conditions. Part 1: The initial binary U + H2O(l) system
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DOI：
10.1016/j.corsci.2019.02.017
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发表时间：
2019-05
影响因子：
8.3
通讯作者：
A. Banos;K. Hallam;T. Scott
中科院分区：
文献类型：
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作者：
A. Banos;K. Hallam;T. Scott
在初始真空条件下研究了未辐照的U与液态水的反应。在不同的温度和反应时间下检查了十个样品。使用 FIB、SIMS 和 XRD 对表面进行腐蚀后检查。反应停止后进行反应水pH值和样品脱气的测量。从分析中可以得出结论，大多数样品都形成了块状 UH3。这表明，临界“阈值”顶部空间压力〜0.5bar促进了UH3的形成，超过该压力在自由顶部空间中观察到压力不足。
The reaction of unirradiated-U with liquid water was investigated under initial vacuum-contained conditions. Ten samples were examined at varying temperatures and reaction times. Post-corrosion examination of the surfaces was conducted using FIB, SIMS and XRD. Measurements of the reacting water pH and degassing of the samples was conducted after the reaction was stopped. From the analyses, it was concluded that bulk-UH3formation occurred on the majority of the samples. It is suggested that UH3formation was facilitated by a critical ‘threshold’ headspace pressure ∼0.5bar over which pressure deficiency is observed in the free headspace.