Zirconium(IV) electrochemical behavior in molten LiF-NaF

被引：27
|
作者：
Quaranta, D. [1 ]
Massot, L. [2 ]
Gibilaro, M. [2 ]
Mendes, E. [1 ]
Serp, J. [1 ]
Chamelot, P. [2 ]
机构：
[1] CEA Marcoule, Nucl Energy Div, Res Dept Min & Fuel Recycling Proc, SPDS LDPS,Ctr Marcoule, BP 17171, F-30207 Bagnols Sur Ceze, France
[2] Univ Toulouse, Lab Genie Chim, UPS, CNRS,INPT, 118 Route Narbonne, F-31062 Toulouse 9, France
来源：
ELECTROCHIMICA ACTA | 2018年 / 265卷
关键词：
Zirconium; Electrochemistry; Progressive nucleation; Molten fluorides; Chronoamperometry; ELECTRODEPOSITION; METAL; REDUCTION; ELECTROCRYSTALLIZATION; IONS;
D O I：
10.1016/j.electacta.2018.01.213
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
Zirconium has a large number of properties that make it very attractive for different applications in several activity fields (nuclear, pyrotechnics, armament ...). This article is devoted to the study of zirconium electrochemical behavior and crystallization phenomena on silver electrode in the LiF-NaF eutectic mixture in the 690-900 degrees C temperature range, using cyclic voltammetry, square wave voltammetry and chronoamperometry. The result showed that Zr(IV) is reduced into Zr in a simple-step exchanging four electrons and that zirconium nucleation is progressive whatever the temperature and the overvoltage. Nuclei growth takes place in all three dimensions and is limited by diffusion of Zr(IV) ions. The influence of overvoltage on the zirconium nucleation rate was also studied. (C) 2018 Elsevier Ltd. All rights reserved.
引用
收藏
页码：586 / 593
页数：8
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