Abstract ZrC0.6 with ordered carbon vacancies was irradiated with a 4 MeV Au ion beam at room temperature at fluences of 2 × 1016 ions/cm2, corresponding to 130 displacements per atom (dpa). Grazing incidence X-ray diffraction and transmission electron microscopy were performed to investigate the microstructure evolution of ZrC0.6 under ion irradiation. The lattice parameter did not clearly increase (lattice expansion of 0.013%) for irradiated ZrC0.6, which indicated that the inherent carbon vacancies acted as sinks for the interstitial atoms generated by irradiation. The peaks of Zr2C-ordered phase in GIXRD patterns and reflections of ordered Zr2C in microdiffraction patterns of the damaged layer disappeared, which indicated that superstructure modulation of the ordered carbon vacancies for Zr2C was destroyed under Au ion irradiation, and demonstrated that introducing vacancy defects in ZrC enhanced the tolerance of radiation damage.

中文翻译：

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离子照射下具有有序碳空位的非化学计量 ZrC 0.6 的微观结构演变

摘要 具有有序碳空位的 ZrC0.6 在室温下用 4 MeV Au 离子束以 2 × 1016 离子/cm2 的通量照射，对应于每原子 130 个位移 (dpa)。进行掠入射X射线衍射和透射电子显微镜以研究ZrC0.6在离子照射下的微观结构演变。辐照后的 ZrC0.6 的晶格参数没有明显增加（晶格膨胀 0.013%），这表明固有的碳空位充当了辐照产生的间隙原子的汇。GIXRD图中Zr2C有序相的峰和损伤层微衍射图中有序Zr2C的反射消失，这表明Zr2C有序碳空位的超结构调制在Au离子照射下被破坏，