中国物理B ›› 2020, Vol. 29 ›› Issue (4): 40704-040704.doi: 10.1088/1674-1056/ab7e99

所属专题: SPECIAL TOPIC — Ion beam technology

• SPECIAL TOPIC—Recent advances in thermoelectric materials and devices • 上一篇    下一篇

Thermal desorption characteristic of helium ion irradiated nickel-base alloy

Shasha Lv(吕沙沙), Rui Zhu(朱睿), Yumeng Zhao(赵雨梦), Mingyang Li(李明阳), Guojing Wang(王国景), Menglin Qiu(仇猛淋), Bin Liao(廖斌), Qingsong Hua(华青松), Jianping Cheng(程建平), Zhengcao Li(李正操)   

  1. 1 Key Laboratory of Beam Technology and Material Modification, Ministry of Education, College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875, China;
    2 Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China;
    3 Department of Engineering Physics, Tsinghua University, Beijing 100084, China;
    4 School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, China;
    5 Key Laboratory of Advanced Materials(MOE), School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
  • 收稿日期:2020-01-10 修回日期:2020-03-07 出版日期:2020-04-05 发布日期:2020-04-05
  • 通讯作者: Shasha Lv, Zhengcao Li E-mail:lvss@bnu.edu.cn;zcli@mail.tsinghua.edu
  • 基金资助:
    Project supported by Special Funds for Fundamental Research Funds for Central Universities, China (Grant Nos. 2018 NTST29 and 2018 NTST04), the National Natural Science Foundation of China (Grant No. 61176003), Chinese Postdoctoral Science Foundation (Grant No. 2019M650524), and Guangdong Province Key Area R&D Program, China (Grant No. 2019B090909002).

Thermal desorption characteristic of helium ion irradiated nickel-base alloy

Shasha Lv(吕沙沙)1, Rui Zhu(朱睿)2, Yumeng Zhao(赵雨梦)3, Mingyang Li(李明阳)3, Guojing Wang(王国景)4, Menglin Qiu(仇猛淋)1, Bin Liao(廖斌)1, Qingsong Hua(华青松)1, Jianping Cheng(程建平)1, Zhengcao Li(李正操)5   

  1. 1 Key Laboratory of Beam Technology and Material Modification, Ministry of Education, College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875, China;
    2 Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China;
    3 Department of Engineering Physics, Tsinghua University, Beijing 100084, China;
    4 School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, China;
    5 Key Laboratory of Advanced Materials(MOE), School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
  • Received:2020-01-10 Revised:2020-03-07 Online:2020-04-05 Published:2020-04-05
  • Contact: Shasha Lv, Zhengcao Li E-mail:lvss@bnu.edu.cn;zcli@mail.tsinghua.edu
  • Supported by:
    Project supported by Special Funds for Fundamental Research Funds for Central Universities, China (Grant Nos. 2018 NTST29 and 2018 NTST04), the National Natural Science Foundation of China (Grant No. 61176003), Chinese Postdoctoral Science Foundation (Grant No. 2019M650524), and Guangdong Province Key Area R&D Program, China (Grant No. 2019B090909002).

摘要: The nickel-base alloy is one of the leading candidate materials for generation IV nuclear reactor pressure vessel. To evaluate its stability of helium damage and retention, helium ions with different energy of 80 keV and 180 keV were introduced by ion implantation to a certain dose (peak displacement damage 1-10 dpa). Then thermal desorption spectroscopy (TDS) of helium atoms was performed to discuss the helium desorption characteristic and trapping sites. The desorption peaks shift to a lower temperature with increasing dpa for both 80 keV and 180 keV irradiation, reflecting the reduced diffusion activation energy and faster diffusion within the alloy. The main release peak temperature of 180 keV helium injection is relatively higher than that of 80 keV at the same influence, which is because the irradiation damage of 180 keV, helium formation and entrapment occur deeper. The broadening of the spectra corresponds to different helium trapping sites (He-vacancies, grain boundary) and desorption mechanisms (different HenVm size). The helium retention amount of 80 keV is lower than that of 180 keV, and a saturation limit associated with the irradiation of 80 keV has been reached. The relatively low helium retention proves the better resistance to helium bubbles formation and helium brittleness.

关键词: nickel-base alloys, helium ion irradiation, thermal desorption spectroscopy

Abstract: The nickel-base alloy is one of the leading candidate materials for generation IV nuclear reactor pressure vessel. To evaluate its stability of helium damage and retention, helium ions with different energy of 80 keV and 180 keV were introduced by ion implantation to a certain dose (peak displacement damage 1-10 dpa). Then thermal desorption spectroscopy (TDS) of helium atoms was performed to discuss the helium desorption characteristic and trapping sites. The desorption peaks shift to a lower temperature with increasing dpa for both 80 keV and 180 keV irradiation, reflecting the reduced diffusion activation energy and faster diffusion within the alloy. The main release peak temperature of 180 keV helium injection is relatively higher than that of 80 keV at the same influence, which is because the irradiation damage of 180 keV, helium formation and entrapment occur deeper. The broadening of the spectra corresponds to different helium trapping sites (He-vacancies, grain boundary) and desorption mechanisms (different HenVm size). The helium retention amount of 80 keV is lower than that of 180 keV, and a saturation limit associated with the irradiation of 80 keV has been reached. The relatively low helium retention proves the better resistance to helium bubbles formation and helium brittleness.

Key words: nickel-base alloys, helium ion irradiation, thermal desorption spectroscopy

中图分类号:  (Thermal instruments and apparatus)

  • 07.20.-n
28.41.Qb (Structural and shielding materials)