Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7963307 | Journal of Nuclear Materials | 2018 | 20 Pages |
Abstract
The microstructure investigations on a high-energy Xe-implanted U3Si2 pellet were performed. The promising accident tolerant fuel (ATF) candidate, U3Si2, was irradiated by 84â¯MeV Xe ions at 600â¯Â°C at Argonne Tandem Linac Accelerator System (ATLAS). The characterizations of the Xe implanted sample were conducted using advanced transmission electron microscopy (TEM) techniques. An oxidation layer was observed on the sample surface after irradiation under the â¼10-5â¯Pa vacuum. The study on the oxidation layer not only unveils the readily oxidation behavior of U3Si2 under high-temperature irradiation conditions, but also develops an understanding of its oxidation mechanism. Intragranular Xe bubbles with bimodal size distribution were observed within the Xe deposition region of the sample induced by 84â¯MeV Xe ion implantation. At the irradiation temperature of 600â¯Â°C, the gaseous swelling strain contributed by intragranular bubbles was found to be insignificant, indicating an acceptable fission gas behavior of U3Si2 as a light water reactor (LWR) fuel operating at such a temperature.
Keywords
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Physical Sciences and Engineering
Energy
Nuclear Energy and Engineering
Authors
Yinbin Miao, Jason Harp, Kun Mo, Yeon Soo Kim, Shaofei Zhu, Abdellatif M. Yacout,