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Boundary element method predictions of the influence of the electrolyte on the galvanic corrosion of AZ91D coupled to steel
Author(s) -
Jia J. X.,
Song G.,
Atrens A.
Publication year - 2005
Publication title -
materials and corrosion
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.487
H-Index - 55
eISSN - 1521-4176
pISSN - 0947-5117
DOI - 10.1002/maco.200403838
Subject(s) - galvanic corrosion , corrosion , galvanic cell , boundary element method , polarization (electrochemistry) , coolant , materials science , electrolyte , metallurgy , alloy , mechanics , finite element method , thermodynamics , chemistry , physics , electrode
This research investigated the galvanic corrosion of the magnesium alloy AZ91D coupled to steel. The galvanic current distribution was measured in 5% NaCl solution, corrosive water and an auto coolant. The experimental measurements were compared with predictions from a Boundary Element Method (BEM) model. The boundary condition, required as an input into the BEM model, needs to be a polarization curve that accurately reflects the corrosion process. Provided that the polarization curve does reflect steady state, the BEM model is expected to be able to reflect steady state galvanic corrosion.