Dense-film preparation of zirconium oxide by self-oxidation in air

Dense-film preparation of zirconium oxide by self-oxidation in air
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空气中自氧化制备致密膜氧化锆

DOI:
10.1016/j.fusengdes.2021.112793
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发表时间:
2021
影响因子:
1.7
通讯作者:
Masatoshi Kondo
Masatoshi Kondo
中科院分区:
工程技术3区
文献类型:
--
作者:
Rio Takemura;Kiyoto Shin-mura;Kazuya Sasaki;Eiki Niwa;Masatoshi Kondo

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为了在热核聚变反应堆的结构材料、液体覆盖层和液体偏滤器表面形成具有自诊断和自修复功能的致密氧化膜,研究了锆(Zr)在500°C空气中的自氧化行为。通过扫描电子显微镜、X射线能谱分析和X射线衍射分析,对薄膜的微观结构、成分(O/Zr比)、晶体结构和形成机理进行了研究。结果表明,该方法可以制备出致密的氧化膜,且氧化膜具有多相连续的层状结构。最外表面为无应变的单斜氧化锆。氧化膜的生长遵循抛物线规律。
For the formation of a dense oxide film for use as an anticorrosion film with self-diagnosis and self-healing functions on the surface of structural materials, liquid blankets, and liquid divertors of thermonuclear fusion reactors, we investigated the self-oxidation of zirconium (Zr) at 500°C in air. The microstructure, composition (O/Zr ratio), crystal structure, and formation mechanism of the film were clarified through scanning electron microscopy, energy dispersive X-ray analysis, and X-ray diffraction analysis. It was demonstrated that the dense oxide film could be prepared, and its film exhibited a continuous and layered structure that consists of multiple phases. The outermost surface was unstrained monoclinic ZrO2. The growth of the oxide film adheres to a parabolic rate law.
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