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Journal Articles Corrosion Science Year : 2010

Mechanism of corrosion of cast iron covered by aged corrosion products: Application of electrochemical impedance spectrometry

Abstract

This work focuses on the corrosion of cast iron in a drinking water network. The study is performed in water and in a sandy soil saturated with the same water. In the presence of corrosion products, the inner wall surface shows a lower corrosion rate than the external wall. In the two media, impedance diagrams are described by a high-frequency loop characteristic of a protective corrosion layer and a diffusion impedance loop at low frequencies associated with oxygen diffusion. Different models involving mass transfer through a porous layer are suggested for the inner and the external corrosion layers.

Dates and versions

hal-04112436 , version 1 (31-05-2023)

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Cite

Mamie Sancy, Y. Gourbeyre, Eliane M.M. Sutter, Bernard Tribollet. Mechanism of corrosion of cast iron covered by aged corrosion products: Application of electrochemical impedance spectrometry. Corrosion Science, 2010, 52 (4), pp.1222-1227. ⟨10.1016/j.corsci.2009.12.026⟩. ⟨hal-04112436⟩
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