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Title: Effectiveness of the metal coating on U–7Mo dispersion fuel in Al during irradiation

Abstract

The effectiveness of a transition metal coating layer as a diffusion barrier between the UMo and matrix Al was examined. The samples were cut from KAERI-made U-Mo/Al dispersion miniplates containing 8 gU/cm3 fuel meat. Mo, W and Zr were included as coating candidates. A physical vapor deposition (PVD) method was used to produce about a 0.2-mu m thick coating layer on the UMo. An Al protection coating layer was subsequently applied to protect the main coating layer. The samples were irradiated at the ATLAS facility in Argonne National laboratory with 84-MeV Xe26+ ions, with the beam current of 200 particles nano ampere (pnA), to achieve a final dose of 2.7x1017 ions/cm2. Post-irradiation examinations included focused ion beam (FIB), scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS). Furthermore, among the coating metals, Mo showed the highest survival during the fuel plate fabrication and endurance during irradiation, which was consistent with the pre-irradiation thermodynamics evaluation. This result also emphasized the importance of the Al protection layer.

Authors:
 [1];  [2];  [1];  [2];  [2];  [2];  [2];  [2];  [1];  [1];  [1];  [2]
  1. Korea Atomic Energy Research Inst., Daejeon (South Korea)
  2. Argonne National Lab. (ANL), Lemont, IL (United States)
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA); Ministry of Science, Information, and Future Planning (MSIP) of Korea
OSTI Identifier:
1606404
Alternate Identifier(s):
OSTI ID: 1578121
Grant/Contract Number:  
AC02-06CH11357; 2013M2A8A104241; AC-02-06CH11357
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Nuclear Materials
Additional Journal Information:
Journal Volume: 529; Journal ID: ISSN 0022-3115
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS; research reactor fuel, U-Mo dispersion fuel, ion radiation, coating method

Citation Formats

Kim, Sunghwan, Kim, Yeon Soo, Jeong, Y. J., Mo, K., Miao, Y., Ye, B., Oaks, A., Bhattacharya, S., Lee, K. H., Kim, K. N., Park, J. M., and Yacout, A. M. Effectiveness of the metal coating on U–7Mo dispersion fuel in Al during irradiation. United States: N. p., 2019. Web. doi:10.1016/j.jnucmat.2019.151945.
Kim, Sunghwan, Kim, Yeon Soo, Jeong, Y. J., Mo, K., Miao, Y., Ye, B., Oaks, A., Bhattacharya, S., Lee, K. H., Kim, K. N., Park, J. M., & Yacout, A. M. Effectiveness of the metal coating on U–7Mo dispersion fuel in Al during irradiation. United States. https://doi.org/10.1016/j.jnucmat.2019.151945
Kim, Sunghwan, Kim, Yeon Soo, Jeong, Y. J., Mo, K., Miao, Y., Ye, B., Oaks, A., Bhattacharya, S., Lee, K. H., Kim, K. N., Park, J. M., and Yacout, A. M. Fri . "Effectiveness of the metal coating on U–7Mo dispersion fuel in Al during irradiation". United States. https://doi.org/10.1016/j.jnucmat.2019.151945. https://www.osti.gov/servlets/purl/1606404.
@article{osti_1606404,
title = {Effectiveness of the metal coating on U–7Mo dispersion fuel in Al during irradiation},
author = {Kim, Sunghwan and Kim, Yeon Soo and Jeong, Y. J. and Mo, K. and Miao, Y. and Ye, B. and Oaks, A. and Bhattacharya, S. and Lee, K. H. and Kim, K. N. and Park, J. M. and Yacout, A. M.},
abstractNote = {The effectiveness of a transition metal coating layer as a diffusion barrier between the UMo and matrix Al was examined. The samples were cut from KAERI-made U-Mo/Al dispersion miniplates containing 8 gU/cm3 fuel meat. Mo, W and Zr were included as coating candidates. A physical vapor deposition (PVD) method was used to produce about a 0.2-mu m thick coating layer on the UMo. An Al protection coating layer was subsequently applied to protect the main coating layer. The samples were irradiated at the ATLAS facility in Argonne National laboratory with 84-MeV Xe26+ ions, with the beam current of 200 particles nano ampere (pnA), to achieve a final dose of 2.7x1017 ions/cm2. Post-irradiation examinations included focused ion beam (FIB), scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS). Furthermore, among the coating metals, Mo showed the highest survival during the fuel plate fabrication and endurance during irradiation, which was consistent with the pre-irradiation thermodynamics evaluation. This result also emphasized the importance of the Al protection layer.},
doi = {10.1016/j.jnucmat.2019.151945},
journal = {Journal of Nuclear Materials},
number = ,
volume = 529,
place = {United States},
year = {2019},
month = {12}
}

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