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http://dx.doi.org/10.4150/KPMI.2012.19.6.398

Characteristics of the Ammonium Diuranate Powders Prepared with Different Experimental Apparatus in Sol-gel Process  

Kim, Yeon-Ku (Advanced Fuel Technology Development Division, KAERI)
Jeong, Kyung-Chai (Advanced Fuel Technology Development Division, KAERI)
Ueom, Sung-Ho (Advanced Fuel Technology Development Division, KAERI)
Cho, Moon Sung (Advanced Fuel Technology Development Division, KAERI)
Publication Information
Journal of Powder Materials / v.19, no.6, 2012 , pp. 398-404 More about this Journal
Abstract
This paper describes the spherical ammonium diuranate gel particles which are the intermediated material of the $UO_2$ microsphere for an VHTR(very high temperature reactor) nuclear fuel. The characteristics of the intermediate-ADU gel particles prepared by AWD(ageing, washing, and drying) and FB(fluidized-bed) apparatus were examined and compared in a sol-gel fabrication process. The electrical conductivity of washing filtrate from the FB treating and the surface area of dried-ADU gel particles were higher than those of AWD treating. Also, an internal pore volume in dried-ADU gel particles showed a more decrease in AWD treatment than FB treatment because of decomposition of PVA affected by the washing time. However, the internal microstructures of ADU gel particles were similar regardless of the process variation.
Keywords
Ammonium diuranate; $UO_3$ Microsphere; $UO_2$ Kernel;
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Times Cited By KSCI : 1  (Citation Analysis)
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1 J .W. Chang: KAERI/AR-600, (2001).
2 C. W. Forsberg: Int. J. Hydrogen Energy, 28 (2003) 1073.
3 H. D. Ringel and E. Zimmer: Nucl. Tech., 45 (1979) 287.
4 P. Naefe and E. Zimmer: Nucl. Tech., 42 (1979) 163.
5 G. Brambilla, P. Genontopulos and O. Neri: Energ. Nucl. (Milan), 17 (1970) 217.
6 K. Verfondern, H. Nabielek and J. M. Kendall: Nucl. Eng. Tech., 39 (2007) 603.   DOI   ScienceOn
7 J. H De Boer: The Structure and Properties of Porous Materials, Butterworth, London, (1958) 68.
8 J. Williams, E. Barnes, R. Scott and A. Hall: J. Nucl. Mater., 1 (1959) 28.   DOI   ScienceOn