Use of SVET and SECM to study the galvanic corrosion of an-iron-zinc cell
authors Simoes, AM; Bastos, AC; Ferreira, MG; Gonzalez-Garcia, Y; Gonzalez, S; Souto, RM
nationality International
journal CORROSION SCIENCE
author keywords iron; zinc; SVET; SECM; galvanic couple
keywords ELECTROCHEMICAL IMPEDANCE SPECTROSCOPY; SCANNING VIBRATING ELECTRODE; WIRE-BEAM ELECTRODE; CUT-EDGE CORROSION; IN-SITU STM; PITTING CORROSION; ORGANIC COATINGS; LOCALIZED CORROSION; POLYCRYSTALLINE TITANIUM; STAINLESS-STEELS
abstract The work makes use of the scanning vibrating electrode technique (SVET) and the scanning electrochemical microscope (SECM) to investigate microscopic aspects of the electrochemical reactions that occur in an iron-zinc galvanic couple immersed in aqueous sodium chloride solution. Detection of the corrosion processes was made by sensing the phenomena occurring in solution. The SVET provided information on the distribution of ionic currents arising from the metal surface, whereas the SECM measured the concentration of chemical species relevant to the corrosion processes. The two techniques had comparable sensitivity for the corrosion of iron but significant differences were observed concerning the detection of corrosion of zinc. (c) 2006 Elsevier Ltd. All rights reserved.
publisher PERGAMON-ELSEVIER SCIENCE LTD
issn 0010-938X
year published 2007
volume 49
issue 2
beginning page 726
ending page 739
digital object identifier (doi) 10.1016/j.corsci.2006.04.021
web of science category Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering
subject category Materials Science; Metallurgy & Metallurgical Engineering
unique article identifier WOS:000244470600029
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