Behaviors of fine (IG-110) and ultra-fine (HPG-510) grain graphite irradiated by 7 MeV Xe26+ ions |
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| Authors: | Wei Qi Zhou-Tong He Bao-Liang Zhang Xiu-Jie He Can Zhang Jin-Liang Song Guan-Hong Lei Xing-Tai Zhou Hui-Hao Xia Ping Huai |
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| Affiliation: | 1. Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China;University of Chinese Academy of Sciences, Beijing 100049,China;2. Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China;3. Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China;4. Sino-French Institute of Nuclear Engineering and Technology, Sun Yat-Sen University, Zhuhai 519082, China |
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| Abstract: | Developing a molten salt reactor needs molten salt-impermeable nuclear graphite.Ultra-fine grain graphite is a good choice as it is better in permeability than fine grain graphite.In this paper,ultra-fine grain graphite (HPG-510) and fine grain graphite (IG-110) samples are irradiated at room temperature by 7 MeV Xe ions to doses of 1 × 1014-5 x 1015 ions/cm2.Scanning electron microscopy,transmission electron microscopy (TEM),Raman spectroscopy and nano-indentation are used to study the radiation-induced changes.After irradiation of different doses,all the HPG-510 samples show less surface fragment than the IG-110 samples.The TEM and Raman spectra,and the hardness and modulus characterized by nano-indentation,also indicate that HPG-510 is more resistant to irradiation. |
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| Keywords: | Molten salt reactor Graphite Ion irradiation Raman spectra Hardness and Young's modulus |
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