Abstract Highly-ordered and hexagonally close-packed nanoporous zirconium oxide layer is formed on the surface of zirconium alloy by anodization, and the anti-oxidation behavior of the zirconium alloy with the nanoporous oxide layer has been investigated. The oxidation experiments were carried out in both air and steam environments at 1000 °C. Interestingly, zirconium alloy with the nanoporous oxide layer exhibits dramatic improvement in the oxidation resistance compared to bare zirconium alloy without the nanoporous oxide layer. Analysis using several characterization tools reveals that large single-crystalline columnar zirconium oxide grains are formed beneath the nanoporous oxide layer and these grains prevent further oxidation.

中文翻译：

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具有阳极纳米多孔氧化物层的锆合金在高温空气/蒸汽环境中的抗氧化性增强

摘要 通过阳极氧化在锆合金表面形成高度有序、六方密排的纳米多孔氧化锆层，研究了具有纳米多孔氧化层的锆合金的抗氧化行为。氧化实验在 1000 °C 的空气和蒸汽环境中进行。有趣的是，与没有纳米多孔氧化物层的裸锆合金相比，具有纳米多孔氧化物层的锆合金在抗氧化性方面表现出显着改善。使用多种表征工具进行的分析表明，在纳米多孔氧化物层下方形成了大的单晶柱状氧化锆颗粒，这些颗粒可防止进一步氧化。