摘要:
通过拉曼光谱、沟道背散射、原子力显微镜、透射电子显微镜、红外光谱等一系列测试手段对ZrO2， SiC和ODS钢三种核材料的多束辐照行为进行表征，研究离子束的协同效应对核材料辐照损伤的影响。ZrO2双束辐照肿胀和损伤是两个单束辐照的线性叠加，SiC双束同时辐照的拉曼光谱比双束先后辐照有更大的主峰半高宽的变化，ODS钢的三束辐照有最大的肿胀和硬化。综合分析得出双束同时辐照比先后辐照具有更明显的协同效应，三束辐照ODS钢的损伤最严重，比三个单束损伤之和大，Si离子与He，H的协同效应最明显。多束辐照能较好地模拟实际反应堆中的辐照环境。这些研究结果对于核材料在实际反应堆中的中子辐照行为具有一定的参考意义。
Abstract:
In order to research the synergistic effect of radiation damage in nuclear materials, multi-ion beam irradiation behavior of ZrO2, SiC and ODS steels was characterized by Raman spectroscopy, Rutherford backscat-tering spectrometry/channeling, atomic force microscopy, transmission electron microscopy, and infrared spec-troscopy. Irradiation swelling and damage of ZrO2 by dual ion beam were a linear superposition of two single ion beam irradiation, Raman spectra of SiC irradiated by dual ion beam simultaneously had greater peak width at half maximum than that of sequential irradiation. The ODS steels co-irradiated by three-beam (Si, He, H ions) induced the biggest swelling and hardening. Dual ion beam irradiation simultaneously induced a more significant synergistic effect than successively irradiation, multi-ion beam irradiation on ODS steel and Sic appeared a syn-ergistic effect, the irradiation damage of ODS steels by multi-ion beam was more serious than the sum of single beam, the synergistic effects of three-beam (Si, He and H ions) were most obvious. Multi-ion beam irradiation could be used to simulate actual reactor irradiation environment. These results have some reference value for neutron irradiation behavior of nuclear material in the actual reactors.
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