NDLI: Electrochemical Analysis of Zn-plated Samples with Blackish Green Passivation Film

Content Provider	IEEE Xplore Digital Library
Author	Wang Hong
Copyright Year	2010
Abstract	The corrosion resistance of blackishgreen passivation films on zinc-plated steel sheet was studied by polarization curve measurement, electrochemical impedance spectroscopy and neutral salt spray test. The passivated sample featured a more positive corrosion potential and much lower corrosion current density as compared to non-passivated sample in 5% (mass fraction) NaCl solution. The Nyquist plots of the samples with and without passivation were characterized as two complete capacitive arcs, indicating that the corrosion is controlled by electrochemical process. The radii of capacitive arcs of the passivated sample are larger than those of non-passivated sample, because the passivation film formed on the sample surface increases the reaction resistance in corrosion process, thus the corrosion resistance of the sample is improved. The anti-white rust time of the passivation film in neutral salt spray test is 400 h.
Starting Page	4677
Ending Page	4679
File Size	413247
Page Count	3
File Format	PDF
ISBN	9781424468805
e-ISBN	9781424468812
DOI	10.1109/iCECE.2010.1132
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-06-25
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Resistance Corrosion resistance Corrosion Films Neutral salt spray test Zinc plating Coatings Impedance Zinc Passivation Polarization curve Electrochemical impedance spectroscopy
Content Type	Text
Resource Type	Article

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