Electrochemical studies on the redox behavior of zirconium in the LiF-NaF eutectic melt

被引：15

作者：

Xu, Liang ^{[1
]}

Xiao, Yanping ^{[3
,4
]}

Xu, Qian ^{[2
]}

van Sandwijk, Anthonie ^{[4
]}

Zhao, Zhuo ^{[3
]}

Song, Qiushi ^{[1
]}

Cai, Yanqing ^{[1
]}

Yang, Yongxiang ^{[3
,5
]}

机构：

[1] Northeastern Univ, Sch Met, Shenyang 110004, Peoples R China

[2] Shanghai Univ, State Key Lab Adv Special Steel, Shanghai 200072, Peoples R China

[3] Anhui Univ Technol, Sch Met Engn, Maanshan 243002, Peoples R China

[4] Zr Hf Ti Met BV, NL-2582 SB The Hague, Netherlands

[5] Delft Univ Technol, Dept Mat Sci & Engn, NL-2628 CD Delft, Netherlands

来源：

JOURNAL OF NUCLEAR MATERIALS | 2017年 / 488卷

基金：

中国国家自然科学基金;

关键词：

Zirconium electrochemical properties; Redox behavior; LiF-NaF; MOLTEN FLUORIDES; LICL; REDUCTION; IONS; ELECTRODEPOSITION; EXTRACTION; DEPOSITS; CHLORIDE; ZR(IV); SALTS;

D O I：

10.1016/j.jnucmat.2017.03.028

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In the present paper, a detailed study of the redox behavior of zirconium in the eutectic LiF-NaF system was carried out on an inert molybdenum electrode at 750 degrees C. Several transient electrochemical methods were used such as cyclic voltammetry, square wave voltammetry, chronopotentiometry, and open circuit voltammetry. The reduction of Zr (IV) was found to follow a two-step mechanism of Zr (IV)/Zr (II) and Zr (II)/Zr at the potentials of about -1.10 and -1.50 V versus Pt, respectively. The theoretical evaluations of the number of transferred electrons according to both cyclic voltammetry and square wave voltammetry further confirmed the Zr reduction mechanism. The estimations of Zr (IV) diffusion coefficient in the LiF-NaF eutectic melt at 750 degrees C through cyclic voltammetry and chronopotentiometry are in fair agreement, as to be approximately 1.13E-5 and 2.42E-5 cm(2)/s, respectively. (C) 2017 Elsevier B.V. All rights reserved.

引用

页码：295 / 301

页数：7

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