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

doi:10.1007/s41365-017-0292-x

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 Xe²⁶⁺ ions

Wei Qi^1,2 Zhou-Tong He¹ Bao-Liang Zhang ³ Xiu-Jie He⁴ Can Zhang ¹ Jin-Liang Song¹ Guan-Hong Lei¹ Xing-Tai Zhou ¹ Hui-Hao Xia ¹Ping Huai ¹

¹ Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
² University of Chinese Academy of Sciences, Beijing 100049, China
³Institute 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 Xe²⁶⁺ ions.Nuclear Science and Techniques, 2017, 28(10): 144 doi: 10.1007/s41365-017-0292-x

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Abstract

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 × 10¹⁵ions/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

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Behaviors of fine (IG-110) and ultra-fine (HPG-510) grain graphite irradiated by 7 MeV Xe²⁶⁺ ions

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