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Title: Impedance spectra of the anodic dissolution of mild steel in sulfuric acid
Authors: Li, P.
Tan, T.C. 
Lee, J.Y. 
Keywords: A. mild steel
C. acid corrosion
Issue Date: Nov-1996
Citation: Li, P., Tan, T.C., Lee, J.Y. (1996-11). Impedance spectra of the anodic dissolution of mild steel in sulfuric acid. Corrosion Science 38 (11) : 1935-1955. ScholarBank@NUS Repository.
Abstract: The anodic dissolution of mild steel in 0.5 M H2SO4 in the potential range of Ecorr to 1600 mV (SCE) was investigated by DC polarization, electrochemical impedance spectroscopy (EIS), and optical microscopy. The objective is to investigate the generation, adsorption, accumulation and transformation of corrosion intermediates of mild steel from active dissolution to the transpassivity state. The impedance behaviour can be satisfactorily described by a series of corrosion reactions where changes in the surface during the various stages of corrosion are emphasized. An attempt was also made to explain the different impedance behaviour between pure iron and mild steel corrosion in acids. The usefulness of using the charge transfer resistance Rt and an index for surface roughness n to differentiate various corrosion patterns was also demonstrated. Copyright © 1996 Elsevier Science Ltd.
Source Title: Corrosion Science
ISSN: 0010938X
DOI: 10.1016/S0010-938X(96)00079-0
Appears in Collections:Staff Publications

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