Comparison of local electrochemical impedance measurements derived from bi-electrode and microcapillary techniques

被引：43

作者：

Jorcin, Jean-Baptiste ^{[2
]}

Krawiec, Halina ^{[1
]}

Pebere, Nadine ^{[2
]}

Vignal, Vincent ^{[3
]}

机构：

[1] Univ Sci & Technol, AGH, PL-30059 Krakow, Poland

[2] Univ Toulouse, CNRS, CIRIMAT, ENSIACET,UPS,INPT, F-31077 Toulouse 04, France

[3] Univ Bourgogne, CNRS, ICB, UMR 5209, F-21078 Dijon, France

来源：

ELECTROCHIMICA ACTA | 2009年 / 54卷 / 24期

关键词：

Local electrochemical impedance spectroscopy; Bi-electrodes; Microcapillaries; Stainless steel; PHASE-ELEMENT BEHAVIOR; DUPLEX STAINLESS-STEELS; MICROELECTROCHEMICAL METHOD; CORROSION-RESISTANCE; PITTING CORROSION; PIT INITIATION; DISK ELECTRODE; CHLORIDE-ION; SPECTROSCOPY; INCLUSIONS;

D O I：

10.1016/j.electacta.2009.05.029

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

In the present paper, local electrochemical impedance spectra were obtained on a 316L stainless steel from two configurations: a dual microelectrode (bi-electrode) and microcapillaries. With the bi-electrode, the local impedance measurements were made from the ratio of the applied voltage to the local current density calculated from the application of the ohm's law. With the use of microelectrochemical cells, the specimen surface area in contact with the electrolyte is limited by the use of glass microcapillaries and the local impedance was defined from the ratio of the local potential to the local current restricted to the analysed surface area. Differences and similarities observed in local impedance spectra obtained with the two configurations were described. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：5775 / 5781

页数：7

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