Observation of the effect of surface roughness on the oxidation of Zircaloy-4
Observation of the effect of surface roughness on the oxidation of Zircaloy-4
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DOI：
10.1016/j.corsci.2015.05.013
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发表时间：
2015-09-01
影响因子：
8.3
通讯作者：
Preuss, M.
中科院分区：
文献类型：
--
作者：
Platt, P.;Allen, V.;Preuss, M.
锆合金用作轻水反应堆的燃料包壳。可能损害抗氧化性的表面处理技术会限制包壳的使用寿命，从而防止燃料的更高燃烧。本文介绍的工作研究了表面粗糙度对 Zircloy-4 在 400 摄氏度蒸汽中暴露长达 275 天的氧化动力学的影响。这项工作显示了类似于 84 天氧化后样品制备之间氧化动力学的明确差异。扫描电子显微镜 (SEM) 和样品横截面图像分析可以评估不同氧化阶段样品之间表面粗糙度的变化。 (C) 2015 年作者。由爱思唯尔有限公司出版
Zirconium alloys are used as fuel cladding in light water reactors. Surface preparation techniques that might impair oxidation resistance would limit the lifetime of the cladding and therefore prevent higher burn-up of fuels. The work presented here investigates the impact of surface roughness on the oxidation kinetics of Zircaloy-4 in 400 degrees C steam for exposures up to 275 days. The work shows well defined differences in oxidation kinetics between sample preparations following similar to 84 days oxidation. Scanning electron microscopy (SEM) and image analysis of samples in cross section allows for an assessment of the variation in surface roughness between samples at different stages of oxidation. (C) 2015 The Authors. Published by Elsevier Ltd.