Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 2017, Vol. 28 ›› Issue (10): 144 doi: 10.1007/s41365-017-0292-x

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Behaviors of fine (IG-110) and ultra-fine (HPG-510) grain graphite irradiated by 7 MeV Xe 26+ ions

Wei Qi 1,2 Zhou-Tong He 1  Bao-Liang Zhang Xiu-Jie He 4  Can Zhang 1  Jin-Liang Song 1  Guan-Hong Lei 1  Xing-Tai Zhou Hui-Hao Xia 1 Ping Huai 1   

  1. 1 Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
    2 University of Chinese Academy of Sciences, Beijing 100049, 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
  • Contact: Zhou-Tong He E-mail:hezhoutong@sinap.ac.cn
  • Supported by:

    This work was supported by the Program of International S&T Cooperation of China (No. 2014DFG60230), the National Natural Science Foundation of China (No. 11305240) and the ‘‘Strategic Priority Research Program’’ of the Chinese Academy of Sciences (No. XDA02040200).

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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. Behaviors of fine (IG-110) and ultra-fine (HPG-510) grain graphite irradiated by 7 MeV Xe 26+ ions.Nuclear Science and Techniques, 2017, 28(10): 144     doi: 10.1007/s41365-017-0292-x

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 × 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.

Key words: Molten salt reactor, Graphite, Ion irradiation, Raman spectra, Hardness and Young’s modulus