The application of coating to cladding materials can potentially improve the accident-tolerant fuel cladding for light water reactors. In this study, oxidation behavior of five CrAl-based coatings containing different amounts of Al deposited onto Zr-4 alloy exposed to high-temperature air is investigated. The results demonstrate that pure Cr coating exhibits excellent oxidation resistance due to the formation of dense and continuous Cr₂O₃ oxide. By contrast, loose coatings with high Al contents correspond to poor oxidation resistance, which is related to the reaction between Zr and O. This paper proposes that the oxidation failure mechanisms of coatings depend on Al content.

Data availability statement

The raw/processed data required to reproduce these findings cannot be shared at this time as the data also forms part of an ongoing study.

中文翻译：

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Al含量对CrAl包覆锆合金高温氧化行为及失效机理的影响

将涂层应用于包壳材料可以潜在地改善轻水反应堆的容灾燃料包壳。在这项研究中，研究了五种含有不同量 Al 的 CrAl 基涂层在暴露于高温空气中的 Zr-4 合金上的氧化行为。结果表明，由于形成致密且连续的Cr ₂ O ₃氧化物，纯Cr涂层表现出优异的抗氧化性。相比之下，Al含量高的松散涂层对应于较差的抗氧化性，这与Zr和O之间的反应有关。本文提出涂层的氧化失效机制取决于Al含量。

数据可用性声明

目前无法共享重现这些发现所需的原始/处理数据，因为这些数据也是正在进行的研究的一部分。