Anodic behaviour of a metallic U–Pu–Zr alloy during electrorefining process

Electrorefining tests of the non-irradiated U–Pu–Zr alloy were performed in LiCl–KCl–UCl 3–PuCl 3–ZrCl 4 melts at 773 K, aiming at reduced Zr dissolution. The tests were carried out both using potentiostatic electrolysis at −1.0 V (vs. Ag +/Ag), i.e. at a more negative potential than the Zr dissolut...

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Bibliographic Details
Published in:Journal of nuclear materials 2011-07, Vol.414 (2), p.194-199
Main Authors: Murakami, T., Sakamura, Y., Akiyama, N., Kitawaki, S., Nakayoshi, A., Fukushima, M.
Format: Article
Language:English
Subjects:
Applied sciences
Controled nuclear fusion plants
Energy
Energy. Thermal use of fuels
Exact sciences and technology
Fission nuclear power plants
Fuels
Installations for energy generation and conversion: thermal and electrical energy
Nuclear fuels
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Summary:Electrorefining tests of the non-irradiated U–Pu–Zr alloy were performed in LiCl–KCl–UCl 3–PuCl 3–ZrCl 4 melts at 773 K, aiming at reduced Zr dissolution. The tests were carried out both using potentiostatic electrolysis at −1.0 V (vs. Ag +/Ag), i.e. at a more negative potential than the Zr dissolution potential, and galvanostatic electrolysis with a limited amount of Zr dissolution. The ICP–AES analysis of the anode residues confirmed that a high dissolution yield of actinides (U: >99.6%, Pu: 99.9%) was successfully demonstrated for both electrolyses.
ISSN:0022-3115
1873-4820
DOI:10.1016/j.jnucmat.2011.03.009