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

作     者：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 

作者机构：Shanghai Institute of Applied PhysicsChinese Academy ofSciencesShanghai 201800China University of Chinese Academy of SciencesBeijing 100049China Institute of Nuclear and New Energy TechnologyTsinghuaUniversityBeijing 100084China Sino-French Institute of Nuclear Engineering andTechnologySun Yat-Sen UniversityZhuhai 519082China 

出 版 物：《Nuclear Science and Techniques》 (核技术（英文）)

年 卷 期：2017年第28卷第10期

页      面：15-22页

核心收录：

学科分类：08[工学] 082701[工学-核能科学与工程] 0827[工学-核科学与技术] 

基　　金：supported by the Program of International S&T Cooperation of China(No.2014DFG60230) the National Natural Science Foundation of China(No.11305240) the"Strategic Priority Research Program"of the Chinese Academy of Sciences(No.XDA02040200) 

主　　题：超细晶粒 离子辐照 核石墨 细颗粒 MeV 扫描电子显微镜 透射电子显微镜 纳米压痕法 

摘      要：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 × 10^(14)-5 × 10^(15) ions/cm^2. 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.