Effects of high-energy C ions irradiation on the deuterium retention behavior in V-5Cr-5Ti

JOURNAL OF NUCLEAR MATERIALS

卷:509

Article

Xu, Yu-Ping¹  Liu, Hao-Dong^1,2  Lyu, Yi-Ming^1,2  Zhou, Hai-Shan¹  Ding, Fang¹  Li, Zeng-De³  Li, Xiao-Chun¹  Wang, Jing^1,2  Yuan, Xiao-Gang^1,2  Wang, Xing-Li^1,2  Xu, Qian¹  Lin, Chen-Guang³  Cao, Xing-Zhong⁴  Zhu, Te⁴  Wang, Baoyi⁴  Luo, Guang-Nan^1,2 

[1] Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Anhui, Peoples R China

[2] Univ Sci & Technol China, Grad Sch, Sci Isl Branch, Hefei 230031, Anhui, Peoples R China

[3] Gen Res Inst Nonferrous Met, Beijing 100088, Peoples R China

[4] Chinese Acad Sci, Inst High Energy Phys, Multidiscipline Res Ctr, Beijing 100049, Peoples R China

关键词: Vanadium alloys;    Hydrogen isotope;    Retention;    Irradiation;   

DOI  :  10.1016/j.jnucmat.2018.07.013

来源: Elsevier

【 摘 要 】

Vanadium alloys are attractive candidate structural materials in future fusion reactors. To evaluate the effects of irradiation on the deuterium retention behavior in vanadium alloys, samples made of V-5Cr-5Ti were irradiated by 5.5 MeV carbon ions. Doppler broadening measurements of the positron annihilation radiation tests were carried out to investigate the defect properties in the irradiated samples. Then the irradiated and virgin samples were implanted with deuterium in an ECR (electron-cyclotron resonance) linear plasma device followed by thermal desorption spectroscopy experiments. It was found that the irradiation process introduced large density of vacancy-type defects and subsequently increased the deuterium retention in the V-5Cr-5Ti, which remains as a serious concern for the vanadium alloys in the application as the structural materials of the fusion blanket. (C) 2018 Elsevier B.V. All rights reserved.

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