Passivity Breakdown of Titanium in LiBr Solutions

被引：40

作者：

Fernandez-Domene, R. M. ^{[1
]}

Blasco-Tamarit, E. ^{[1
]}

Garcia-Garcia, D. M. ^{[1
]}

Garcia Anton, J. ^{[1
]}

机构：

[1] Univ Politecn Valencia, ETSI Ind, Dept Ingn Quim & Nucl, IEC, Valencia 46022, Spain

来源：

JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 2014年 / 161卷 / 01期

关键词：

ANODIC OXIDE-FILMS; POINT-DEFECT MODEL; PITTING CORROSION; IMPEDANCE SPECTROSCOPY; STAINLESS-STEELS; BROMIDE; METALS; TEMPERATURE; BEHAVIOR; WATER;

D O I：

10.1149/2.035401jes

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The passive behavior of titanium and its susceptibility to undergo localized attack in different LiBr solutions at 25 degrees C have been investigated using different electrochemical techniques: potentiodynamic polarization curves, potentiostatic passivation tests, EIS measurements and Mott-Schottky analysis. In low and moderately concentrated LiBr solutions, the breakdown potential E-b decreased with increasing bromide concentrations, while in highly concentrated LiBr solutions, E-b increased with increasing LiBr concentration. In the most concentrated LiBr solution (11.42M) Ti did not undergo passivity breakdown even at 9 V-Ag/AgCl. This observation can be explained by a a decrease in the activity of water in highly concentrated LiBr solutions. (C) 2013 The Electrochemical Society.

引用

页码：C25 / C35

页数：11

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