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 ›› 2020, Vol. 31 ›› Issue (8): 79 doi: 10.1007/s41365-020-00791-w

• NUCLEAR ENERGY SCIENCE AND ENGINEERING • Previous Articles     Next Articles

Theoretical prediction of radiation-enhanced diffusion behavior in nickel under self-ion irradiation

Xiao-Ya Chen1,2 • A-Li Wen2 • Cui-Lan Ren2,3 • Cheng-Bin Wang2,3 • Wei Zhang2,3 • He-Fei Huang2 • Zhi-Wen Chen1 • Ping Huai2,4,5   

  1. 1 School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China
    2 Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
    3 Key Laboratory of Interfacial Physics and Technology, Chinese Academy of Sciences, Shanghai 201800, China
    4 Shanghai Synchrotron Radiation Facility, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201204, China
    5 School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
  • Received:2020-04-08 Revised:2020-06-01 Accepted:2020-06-03
  • Contact: Cui-Lan Ren;Zhi-Wen Chen; Zhi-Wen Chen
  • Supported by:
    This work was partially supported by the Strategic Priority Research Program of the Chinese Academy of Sciences (Grant No. XDA02040100), the National Natural Science Foundation of China (Grant No. 11975304), and the Shanghai Municipal Science and Technology Commission (19ZR1418100).
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Xiao-Ya Chen, A-Li Wen, Cui-Lan Ren, Cheng-Bin Wang, Wei Zhang, He-Fei Huang, Zhi-Wen Chen, Ping Huai. Theoretical prediction of radiation-enhanced diffusion behavior in nickel under self-ion irradiation.Nuclear Science and Techniques, 2020, 31(8): 79     doi: 10.1007/s41365-020-00791-w

Abstract: The enhanced diffusion in materials under irradiation plays an important role in the long-term microstructural evolution. In this work, the self-ion irradiation in nickel was used as a model system to study the effect of radiation-enhanced diffusion on the implanted ion profiles. Initially, the depth profiles of vacancies and implanted ions for nickel self-ion irradiation with ion energies up to 15 MeV were computed by the high-efficiency Monte Carlo code IM3D (Irradiation of Materials in 3D). The results are in good agreement with those predicted by SRIM (Stopping and Range of Ions in Matter). Then, diffusion coefficients as functions of temperature and damage rate were obtained, and the depth-dependent diffusion coefficients at various temperatures and damage rates were also illustrated. For this purpose, we used a temperature-dependent effective sink concentration for nickel, which was estimated from the available experimental investigations on the damage structures of irradiated nickel. At length, case studies on the time evolution of implanted ion profiles under the condition of nickel selfirradiation were performed and discussed based on Fick’s second law. The results help to understand the fundamental diffusion properties in ion irradiation, especially under higher-dose irradiation.

Key words: Self-ion irradiation in nickel, Implanted ions, Radiation-enhanced diffusion, Monte Carlo simulation