| 학회 |
한국공업화학회 |
| 학술대회 |
2020년 가을 (10/28 ~ 10/30, 광주 김대중컨벤션센터(Kimdaejung Convention Center)) |
| 권호 |
24권 1호 |
| 발표분야 |
포스터-콜로이드·계면화학 |
| 제목 |
Influence of Gd and Zr co-doping on the change in structure of uranium dioxide |
| 초록 |
To understand the structural character of the spent nuclear fuel, element doped UO2 have been studied as simulated spent fuel. Previous studies have been focused on single element doped UO2. In this study, we have been investigated the effect on both Gd-and Zr-doping on the UO2 structure to characterize the influence of co-doping of trivalent and tetravalent elements. U1-x-yGdxZryO2 pellets have been characterized by SEM, XRD, Raman spectroscopy. Images obatined from SEM technique show that the domain size decreases rapidly with the increase of Gd and Zr doping level. The substitution of Gd and Zr atoms into the UO2 lattice is confirmed by lattice parameters from XRD spectra. The lattice parameters are refined from each XRD spectrum and they show linearly decreasing of lattice change with increasing doping level. Raman spectra show that presence of Gd3+-oxygen vacancy clusters and ZrO8-type complex in the structure of U1-x-yGdxZryO2. |
| 저자 |
이정묵, 노혜란, 최현명, 이동우, 김종윤, 임상호
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| 소속 |
한국원자력(연) |
| 키워드 |
UO2; surface; doping
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| E-Mail |
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