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

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.

keywords

REFERENCE ELECTRODE TECHNIQUE; NATURAL-CONVECTION; VIBRATING PROBE; GALVANIZED STEELS; CORROSION; ELECTROCHEMISTRY; LIMITATIONS; SIMULATION; IRON; SVET

subject category

Electrochemistry

authors

Demeter, AS; Dolgikh, O; Bastos, AC; Deconinck, D; Lamaka, S; Topa, V; Deconinck, J

our authors

acknowledgements

The present work was supported by the project

Share this project:

Related Publications

We use cookies for marketing activities and to offer you a better experience. By clicking “Accept Cookies” you agree with our cookie policy. Read about how we use cookies by clicking "Privacy and Cookie Policy".