3D computer simulation of the influence of microstructure on the cut edge corrosion behaviour of a zinc aluminium alloy galvanized steel

• Published in: Corrosion science Vol. 48; no. 8; pp. 2291 - 2303
• Main Authors: Brown, S.G.R., Barnard, N.C.
• Format: Journal Article
• Language: English
• Published: Oxford Elsevier Ltd 01.08.2006; Elsevier Science
• Subjects: A. Galfan coatings; Applied sciences; B. Finite difference; B. Modelling; C. Localized corrosion; C. Microstructure; Corrosion; Corrosion environments; Exact sciences and technology; Metals. Metallurgy; Production techniques; Surface treatment; A. Galfan coatings; B. Finite difference; B. Modelling; C. Localized corrosion; C. Microstructure; Computer simulation; Galvanized steel; Localized corrosion; Microstructure; Coatings; Modeling; Zinc
• ISSN: 0010-938X; 1879-0496
• DOI: 10.1016/j.corsci.2005.08.015

Recently, experimental work has been reported that demonstrates the effects of microstructural variations within Zn–Al Galfan type coatings on the corrosion behaviour of cut-edge material, i.e. those cases where both the underlying steel and the organic coated Galfan layer are simultaneously exposed to a corrosive environment [J. Elvins, J.A. Spittle, D.A. Worsley, Microstructural changes in zinc aluminium alloy galvanising as a function of processing parameters and their influence on corrosion, Corros. Sci. 47 (11) (2005) 2740–2759]. In this paper a finite difference numerical model of localized corrosion has been applied in an attempt to simulate this type of corrosion. Results from the model are compared to experimental observations.