We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Microstructural characterization of U-Zr alloy fuel slugs for sodium-cooled fast reactor.
- Authors
Kim, Ki-Hwan; Oh, Seok-Jin; Kim, Sun-Ki; Lee, Chong-Tak; Lee, Chan-Bock
- Abstract
In order to investigate a fabrication process of metallic fuel for sodium-cooled fast reactor, U-Zr fuel slugs were fabricated with gravity casting and injection casting. In order to reduce the formation of radioactive wastes, and to have a fine microstructure, spherical powder of U-Zr alloy was also fabricated by centrifugal atomization. The microstructural characteristics were investigated by using electron microscopes and energy-dispersive electron X-ray spectroscope. U-10wt.%Zr fuel slugs had some dispersion phases of Zr precipitates and Zr compounds of about 5 µm in size. The matrix was composed of fine laminar structure of about 0.15 µm in thickness. U grains became finer from about 30 µm in conventionally cast fuel slug to about 2 µm in atomized powder. Laminar structure became so fine from 0.2 µm in conventionally cast fuel slug to 0.1 µm in atomized powder. It is possible for atomized metallic fuel to have a fine microstructure, resulting in a higher fission gas release rate during irradiation. Copyright © 2012 John Wiley & Sons, Ltd.
- Publication
Surface & Interface Analysis: SIA, 2012, Vol 44, Issue 11/12, p1515
- ISSN
0142-2421
- Publication type
Article
- DOI
10.1002/sia.4989