Abstract The effects of irradiation on the morphology and microstructure of the oxide formed on the surface of ZrC0.99 ± 0.02 during irradiation with 10 MeV Au3+ ions at 800 °C were investigated. Nanosized oxide islands were observed on unirradiated and irradiated sample areas, indicating that the early stage oxidation of ZrC proceeded via nucleation and growth. Radiation shifted the particle size distribution (PSD) to smaller diameters, increased the circularity of the islands, and reduced the surface coverage of the specimen. Additionally, nanometric cavities were observed in oxide islands for doses above 2.5 dpa. The underlying mechanisms driving these changes were discussed.

中文翻译：

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ZrC 在 10 MeV Au3+ 离子辐照下 800 °C 的早期氧化

摘要 研究了在 800 °C 下用 10 MeV Au3+ 离子辐照时，辐照对 ZrC0.99 ± 0.02 表面形成的氧化物形貌和微观结构的影响。在未辐照和辐照样品区域观察到纳米级氧化物岛，表明 ZrC 的早期氧化通过成核和生长进行。辐射将粒度分布 (PSD) 转移到更小的直径，增加了岛的圆形度，并降低了样品的表面覆盖率。此外，当剂量高于 2.5 dpa 时，在氧化物岛中观察到纳米空腔。讨论了推动这些变化的潜在机制。