Multi-ion transport and reaction model used to improve the understanding of local current density measurements in presence of concentration gradients around a point current source
authors Demeter, AS; Dolgikh, O; Bastos, AC; Deconinck, D; Lamaka, S; Topa, V; Deconinck, J
nationality International
journal ELECTROCHIMICA ACTA
author keywords Multi-ion transport model; FEM; SRET; SVET; Natural convection simulation; Micro-convection
keywords REFERENCE ELECTRODE TECHNIQUE; NATURAL-CONVECTION; VIBRATING PROBE; GALVANIZED STEELS; CORROSION; ELECTROCHEMISTRY; LIMITATIONS; SIMULATION; IRON; SVET
abstract departure from the theoretical current density distribution close to a point current source is observed in both Scanning Reference Electrode Technique (SRET) and Scanning Vibrating Electrode Technique (SVET) measurements. Here we report the use of a general multi-ion transport and reaction model, which accounts for micro-convection to point out the origin of the deviations that are experimentally observed. The validity of the model is proven by comparison against both analytical and measured (SRET and SVET) distributions of the current density in a typical calibration setup. Solutions with different conductivities and different impressed currents are considered. (c) 2014 Elsevier Ltd. All rights reserved.
publisher PERGAMON-ELSEVIER SCIENCE LTD
issn 0013-4686
year published 2014
volume 127
beginning page 45
ending page 52
digital object identifier (doi) 10.1016/j.electacta.2014.02.009
web of science category Electrochemistry
subject category Electrochemistry
unique article identifier WOS:000336009900007
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journal impact factor 5.116
5 year journal impact factor 4.857
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