The influence of vibration and probe movement on SVET measurements
authors Bastos, AC; Quevedo, MC; Ferreira, MGS
nationality International
journal CORROSION SCIENCE
author keywords SVET; Scanning vibrating electrode technique
keywords ELECTRODE TECHNIQUE; PITTING CORROSION; ALUMINUM-ALLOY; DISTRIBUTIONS; STEELS
abstract communication describes a set of experiments performed to evaluate the influence of SVET vibration and movement of the probe on the obtained results. Both vibration and movement during scanning stir the solution with the risk of enhancing the oxygen transport to the surface thus increasing the measured currents and accelerating the corrosion process. It is shown that, for the SVET system used, due to its small probe, the effect of the vibration is negligible in normal operation. On the contrary, the movement of the probe during scanning increases the cathodic reaction and smaller excursions or slower movements just marginally reduce this effect. It is also shown that only the region of the sample under the probe is affect and for just brief instants. The overall corrosion in the long run is not influenced and the measured maps only scarcely show any evidences of artifacts introduced by the probe movement. (C) 2014 Elsevier Ltd. All rights reserved.
publisher PERGAMON-ELSEVIER SCIENCE LTD
issn 0010-938X
year published 2015
volume 92
beginning page 309
ending page 314
digital object identifier (doi) 10.1016/j.corsci.2014.10.038
web of science category Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering
subject category Materials Science; Metallurgy & Metallurgical Engineering
unique article identifier WOS:000349737400033

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