Thermodynamics of the UO $_{2}$ solid solution with magnesium and europium oxides

Fujino, Takeo*; Sato, Nobuaki*; Yamada, Kota*; Nakama, Shohei*; Fukuda, Kosaku; Serizawa, Hiroyuki ; Shiratori, Tetsuo*

Oxygen potential of solid solution Mg $_{y}$ Eu $_{z}$ U $_{1-y-z}$ O $_{2+x}$ was examined as a function of O/Metal ratio at 1000, 1100 and 1200 $^{circ}$ C. The O/Metal ratio which gave the steepest change of the oxygen potential(GOM) was 1.995 for y=0.05, z=0.1 and y=0.05, z=0.05. The position decreased to 1.908 at higher Mg $^{2+}$ concentration of y=0.1, z=0.05. The GOM did not change with temperature in a range 1000-1200 $^{circ}$ C. At GOM, a friction of 0.473 of total Mg $^{2+}$ occupy the interstitial position of the fluorite lattice.

Language	:	English
Journal	:	Journal of Nuclear Materials
Volume	:	297
Number	:	3
Pages	:	p.332 - 340
Publication Year/Month	:	2001/09
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Paper URL	:	https://doi.org/10.1016/S0022-3115(01)00627-4
DOI for research data	:
Keywords	:	Mg; Eu; UO $_{2}$ ; 酸素ポテンシャル; 燃料; 熱力学
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Article of JAEA R&D Review	:
Cooperating Institute	:	東北大学

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Registration No. : A20000489
JAEA Abstracts No. : 300046
Paper Submission No. : 18656

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Thermodynamics of the UO solid solution with magnesium and europium oxides

Thermodynamics of the UO $_{2}$ solid solution with magnesium and europium oxides