Electrochemical oscillations during copper electrodissolution/passivation in trifluoroacetic acid induced by current interrupt method

被引：12
作者：
Potkonjak, Nebojsa I. [1 ]
Nikolic, Zoran [2 ]
Anic, Slobodan R. [3 ]
Minic, Dragica M. [3 ]
机构：
[1] Univ Belgrade, Vinca Inst Nucl Sci, Chem Dynam Lab, Belgrade 11001, Serbia
[2] Univ Belgrade, Fac Phys, Belgrade 11000, Serbia
[3] Univ Belgrade, Fac Phys Chem, Belgrade 11158 118, Serbia
来源：
CORROSION SCIENCE | 2014年 / 83卷
关键词：
Copper; Polarization; Acid corrosion; Anodic dissolution; Negative difference effect; Passive films; ANODIC-DISSOLUTION; CORROSION; IRON; STABILITY; ELECTRODE; BEHAVIOR;
D O I：
10.1016/j.corsci.2014.02.034
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Complex oscillatory behavior of electric current and electrode potential were observed during potentiodynamic anodic polarization of Cu in 1 M TFA, applying the current interrupt method for IR drop compensation. This oscillatory behavior was found to give an electrochemical response in the form of a polarization curve with continuous loop. The results presented show that the current interrupt method is capable of eliminating the entire IR drop. Under such conditions, oscillations of the applied potential are in fact those of the double-layer potential. Theoretically predicted interplay between oscillatory behavior of the double-layer potential and the electric current is experimentally demonstrated. (C) 2014 Elsevier Ltd. All rights reserved.
引用
收藏
页码：355 / 358
页数：4
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