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RESEARCH PRODUCT

Predictive Model for Cut-Edge Corrosion of Galvanized Steels

B. VuilleminC. AllelyF. ThebaultKevin OgleFlorence DosdatRoland Oltra

subject

symbols.namesakeMaterials scienceAtmospheric corrosionGalvanic couplingVibrating electrodeMetallurgysymbolsElectrolyteEdge (geometry)ElectrochemistryGalvanizationCorrosion

description

A numerical model for the electrochemical behavior of cut-edge of galvanized steels is proposed. Some experimental data of current densities above cut-edge immersed in a 0.03M NaCl solution have been measured, using a scanning vibrating electrode technique, and compared with some simulated ones. A good fit has been obtained. The model geometry has been modified by decreasing the electrolyte thickness in order to tend towards an atmospheric corrosion case; such situation that is not easily accessible by electrochemical studies. Three regions can be distinguished according to the efficiency of the galvanic coupling to protect steel.

https://doi.org/10.1149/1.2789240