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Advances in Materials Science and Engineering
Volume 2015, Article ID 131704, 8 pages
Research Article

Preparation of U–Zr–Mn, a Surrogate Alloy for Recycling Fast Reactor Fuel

Next Generation Fuel Division, Korea Atomic Energy Research Institute, Daejeon 305-353, Republic of Korea

Received 27 May 2015; Revised 26 August 2015; Accepted 8 September 2015

Academic Editor: Randhir Singh

Copyright © 2015 Jong-Hwan Kim et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Metallic fuel slugs of U–10Zr–5Mn (wt%), a surrogate alloy for the U–TRU–Zr (TRU: a transuranic element) alloys proposed for sodium-cooled fast reactors, were prepared by injection casting in a laboratory-scale furnace, and their characteristics were evaluated. As-cast U–Zr–Mn fuel rods were generally sound, without cracks or thin sections. Approximately 68% of the original Mn content was lost under dynamic vacuum and the resulting slug was denser than those prepared under Ar pressure. The concentration of volatile Mn was as per the target composition along the entire length of the rods prepared under 400 and 600 Torr. Impurities, namely, oxygen, carbon, silicon, and nitrogen, totaled less than 2,000 ppm, satisfying fuel criteria.