Mg1-xZnxAl2O4 (x = 0~1) 尖晶石的离子束辐照效应研究

辐射防护 ›› 2025, Vol. 45 ›› Issue (3): 242-251.

Mg_1-xZn_xAl₂O₄(x = 0~1) 尖晶石的离子束辐照效应研究

陈双强^1,2,3, 李玉红⁴, 韦应靖^1,2,3,5, 唐智辉¹, 李胤¹, 段嘉宇¹, 方登富¹

1.中国辐射防护研究院,太原 030006;
2.辐射安全与防护山西省重点实验室,太原 030006;
3.中核集团辐射防护技术重点实验室,太原 030006;
4.兰州大学核科学与技术学院,兰州 730000;
5.清华大学核能与新能源技术研究院,北京 100084

收稿日期:2024-09-04 出版日期:2025-05-20 发布日期:2025-05-21
通讯作者: 李玉红。E-mail:liyuhong@lzu.edu.cn
作者简介:陈双强(1993—),男,2017年毕业于兰州大学原子核物理专业,获学士学位,2020年毕业于兰州大学核技术及应用专业,获硕士学位,助理研究员。E-mail:cirpshq2020@126.com
基金资助:
国家自然科学基金项目(A050401)。

Ion irradiation effects of Mg_1-_xZn_xAl₂O₄(x = 0-1) spinels

CHEN Shuangqiang^1,2,3, LI Yuhong⁴, WEI Yingjing^1,2,3,5, TANG Zhihui¹, LI Yin¹, DUAN Jiayu¹, FANG Dengfu¹

1. China Institute for Radiation Protection,Taiyuan 030006;
2. Key Laboratory of Radiation Safety and Protection in Shanxi Province,Taiyuan 030006;
3. Key Laboratory of Radiation Protection Technology of China National Nuclear Corporation,Taiyuan 030006;
4. School of Nuclear Science and Technology,Lanzhou University,Lanzhou 730000;
5. Institute of Nuclear Energy and New Energy Technology,Tsinghua University,Beijing 100084

Received:2024-09-04 Online:2025-05-20 Published:2025-05-21

摘要/Abstract

摘要： 探究尖晶石在辐照环境下的结构演变及损伤机理,对于材料的筛选、评估及改性等方面具有重要的现实意义和理论价值。在室温下,用500 keV的He²⁺离子束对Mg_1-_xZn_xAl₂O₄尖晶石进行辐照试验,结合掠入射X射线衍射(GIXRD)和拉曼(Raman)光谱技术研究发现,He²⁺辐照会诱导Mg_1-_xZn_xAl₂O₄从有序尖晶石向无序尖晶石的结构相变(O-D相变),同时还会造成其体积发生肿胀。在1×10¹⁷cm^-2的He²⁺束注量下,MgAl₂O₄、Mg_0.4Zn_0.6Al₂O₄和ZnAl₂O₄的晶胞体积肿胀率分别为0.43％、0.12％和0.67％。试验结果表明:He²⁺束注量低于1×10¹⁷cm^-2时,Mg_0.4Zn_0.6Al₂O₄拥有更好的抗辐照肿胀能力,MgAl₂O₄次之,ZnAl₂O₄最差。

关键词: 尖晶石, 离子束辐照, O-D相变, 体积肿胀

Abstract: Spinels have been proposed for a multitude of nuclear-energy-related applications, including as nuclear waste forms, inert matrix fuels and structure materials for nuclear reactor, due to its excellent mechanical properties, chemical durability and radiation resistance. The study of radiation behavior and radiation tolerance have important significance in materials selection, assessment and modification. The 500 keV He ions irradiation were performed on Mg_1-xZn_xAl₂O₄(x = 0-1) spinels at room temperature with different ion fluence. There were a phase transition from order spinel to disorder spinel (O-D) but no amorphization in all of the samples even if the highest ion fluence1×10¹⁷ ions/cm² according to the results of grazing incidence X-ray diffraction and Raman scattering spectrum (Raman). The swelling ratio of MgAl₂O₄, Mg_0.4Zn_0.6Al₂O₄ and ZnAl₂O₄ caused by irradiation is 0.43％, 0.12％and 0.67％, respectively. We think Mg_0.4Zn_0.6Al₂O₄spinel have the best radiation swelling tolerance, closely followed by MgAl₂O₄and ZnAl₂O₄ is the worst when the ion fluenceis below 1×10¹⁷ ions/cm². But, maybe the swelling ratio of Mg_0.4Zn_0.6Al₂O₄ will outstrip MgAl₂O₄ at the higher ion fluence than 1×10¹⁷ ions/cm².

Key words: spinel, ion irradiation, O-D transition, swelling

中图分类号:

TL75+2.3

陈双强, 李玉红, 韦应靖, 唐智辉, 李胤, 段嘉宇, 方登富. Mg_1-xZn_xAl₂O₄(x = 0~1) 尖晶石的离子束辐照效应研究[J]. 辐射防护, 2025, 45(3): 242-251.

CHEN Shuangqiang. Ion irradiation effects of Mg_1-_xZn_xAl₂O₄(x = 0-1) spinels[J]. RADIATION PROTECTION, 2025, 45(3): 242-251.

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Mg_1-xZn_xAl₂O₄(x = 0~1) 尖晶石的离子束辐照效应研究

Ion irradiation effects of Mg_1-_xZn_xAl₂O₄(x = 0-1) spinels

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