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Title: In-situ TEM study of the ion irradiation behavior of U 3Si 2 and U 3Si 5

Abstract

We report that U 3Si 2 and U 3Si 5 are two important uranium silicide phases currently under extensive investigation as potential fuel forms or components for light water reactors (LWRs) to enhance accident tolerance. In this paper, their irradiation behaviors are studied by ion beam irradiations with various ion mass and energies, and their microstructure evolution is investigated by in-situ transmission electron microscopy (TEM). U 3Si 2 can easily be amorphized by ion beam irradiations (by 1MeV Ar 2+ or Kr 2+) at room temperature with the critical amorphization dose less than 1 dpa. The critical amorphization temperatures of U 3Si 2 irradiated by 1MeV Kr 2+ and 1MeV Ar 2+ ion are determined as 580±10K and 540±5K, respectively. In contrast, U 3Si 5 remains crystalline up to 8 dpa at room temperature and is stable against ion irradiation-induced amorphization up to ~50 dpa by either 1MeV Kr 2+ or 150KeV Kr + at 623K. In conclusion, these results provide valuable experimental data to guide future irradiation experiments, support the relevant post irradiation examination, and serve as the experimental basis for the validation of advanced fuel performance models

Authors:
ORCiD logo [1];  [1]; ORCiD logo [2]; ORCiD logo [3]; ORCiD logo [2]; ORCiD logo [4];  [1]
  1. Rensselaer Polytechnic Inst., Troy, NY (United States)
  2. Idaho National Lab. (INL), Idaho Falls, ID (United States)
  3. Argonne National Lab. (ANL), Lemont, IL (United States)
  4. Univ. of Florida, Gainesville, FL (United States)
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Nuclear Energy (NE). Nuclear Energy University Programs (NEUP)
OSTI Identifier:
1473623
Grant/Contract Number:  
AC02-06CH11357; NE0008564; FOA0000712
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Nuclear Materials
Additional Journal Information:
Journal Volume: 511; Journal Issue: C; Journal ID: ISSN 0022-3115
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS

Citation Formats

Yao, Tiankai, Gong, Bowen, He, Lingfeng, Miao, Yinbin, Harp, Jason M., Tonks, Michael, and Lian, Jie. In-situ TEM study of the ion irradiation behavior of U3Si2 and U3Si5. United States: N. p., 2018. Web. doi:10.1016/j.jnucmat.2018.08.058.
Yao, Tiankai, Gong, Bowen, He, Lingfeng, Miao, Yinbin, Harp, Jason M., Tonks, Michael, & Lian, Jie. In-situ TEM study of the ion irradiation behavior of U3Si2 and U3Si5. United States. doi:10.1016/j.jnucmat.2018.08.058.
Yao, Tiankai, Gong, Bowen, He, Lingfeng, Miao, Yinbin, Harp, Jason M., Tonks, Michael, and Lian, Jie. Fri . "In-situ TEM study of the ion irradiation behavior of U3Si2 and U3Si5". United States. doi:10.1016/j.jnucmat.2018.08.058. https://www.osti.gov/servlets/purl/1473623.
@article{osti_1473623,
title = {In-situ TEM study of the ion irradiation behavior of U3Si2 and U3Si5},
author = {Yao, Tiankai and Gong, Bowen and He, Lingfeng and Miao, Yinbin and Harp, Jason M. and Tonks, Michael and Lian, Jie},
abstractNote = {We report that U3Si2 and U3Si5 are two important uranium silicide phases currently under extensive investigation as potential fuel forms or components for light water reactors (LWRs) to enhance accident tolerance. In this paper, their irradiation behaviors are studied by ion beam irradiations with various ion mass and energies, and their microstructure evolution is investigated by in-situ transmission electron microscopy (TEM). U3Si2 can easily be amorphized by ion beam irradiations (by 1MeV Ar2+ or Kr2+) at room temperature with the critical amorphization dose less than 1 dpa. The critical amorphization temperatures of U3Si2 irradiated by 1MeV Kr2+ and 1MeV Ar2+ ion are determined as 580±10K and 540±5K, respectively. In contrast, U3Si5 remains crystalline up to 8 dpa at room temperature and is stable against ion irradiation-induced amorphization up to ~50 dpa by either 1MeV Kr2+ or 150KeV Kr+ at 623K. In conclusion, these results provide valuable experimental data to guide future irradiation experiments, support the relevant post irradiation examination, and serve as the experimental basis for the validation of advanced fuel performance models},
doi = {10.1016/j.jnucmat.2018.08.058},
journal = {Journal of Nuclear Materials},
number = C,
volume = 511,
place = {United States},
year = {2018},
month = {8}
}

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