Cyclic Voltammetry on Zr, Sn, Fe, Cr and Co in LiCl-KCl Salts at 500°C for Electrorefining of Irradiated Zircaloy-4 Cladding
- Author(s)
-
Park, Jaeyeong, Choi, Sungyeol, Sohn, Sungjune, Hwang, Il Soon
- Issued Date
-
2017-12
- DOI
-
10.1149/2.1501712jes
- URI
-
https://scholarworks.unist.ac.kr/handle/201301/22961
- Fulltext
-
http://jes.ecsdl.org/content/164/12/D744.abstract
- Citation
-
JOURNAL OF THE ELECTROCHEMICAL SOCIETY, v.164, no.12, pp.D744 - D751
- Abstract
-
To achieve a better understanding of Zircaloy-4 electrorefining in LiCl-KCl at 500°C, redox behaviors of Zr, Sn, Cr, Fe and Co, were examined by cyclic voltammetry using tungsten working and counter electrode. Zr metal can be produced from Zr4+ through two step reduction and ZrCl is generated as an intermediate product. As ZrCl4 concentration decreases, ZrCl would be easily reduced into Zr metal. In addition, Zr2+ formation would be unlikely at low ZrCl4 concentration. The redox reactions of the other elements are much simpler than Zr. The reduction of Zr4+ into ZrCl was close to irreversible but the reduction reactions of the other elements are close to reversible. The diffusion coefficients and apparent reduction potentials were calculated using equations for a reversible or irreversible reaction. The diffusion coefficients are in the order of 10−9 m2/s and Zr is less reductive than other elements.
- Publisher
-
ELECTROCHEMICAL SOC INC
- ISSN
-
0013-4651
Items in Repository are protected by copyright, with all rights reserved, unless otherwise indicated.