Corrosion behaviour of galvanized steel and electroplating steel in aqueous solution: AC impedance study and XPS

Lebrini, Mounim; Fontaine, Gaëlle; Gengembre, L.; Traisnel, Michel; Lerasle, O.; Genet, Nicole

doi:10.1016/j.apsusc.2008.04.112

Cited by 19 publications

(9 citation statements)

References 28 publications

(30 reference statements)

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“…The EEC is shown in Figure 5e), which agrees with the literature [34,35]. The transfer function is represented by a resistance (Rdl) parallel to a CPE (CPEdl) in series with an additional resistance (Rs).…”

Section: Electrochemical Impedance Spectroscopy (Eis)supporting

confidence: 78%

Influence of Experimental Parameters Using the Dip-Coating Method on the Barrier Performance of Hybrid Sol-Gel Coatings in Strong Alkaline Environments

2015

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Abstract:Previous studies have shown that the barrier effect and the performance of organic-inorganic hybrid (OIH) sol-gel coatings are highly dependent on the coating deposition method as well as on the processing conditions. However, studies on how the coating deposition method influences the barrier properties in alkaline environments are scarce. The aim of this experimental research was to study the influence of experimental parameters using the dip-coating method on the barrier performance of an OIH sol-gel coating in contact with simulated concrete pore solutions (SCPS). The influence of residence time (Rt), a curing step between each dip step and the number of layers of sol-gel OIH films deposited on hot-dip galvanized steel to prevent corrosion in highly alkaline environments was studied. The barrier performance of these OIH sol-gel coatings, named U(400), was assessed in the first instants of contact with SCPS, using electrochemical impedance spectroscopy and potentiodynamic methods. The durability and stability of the OIH coatings in SCPS was monitored during eight days by macrocell current density. The morphological characterization of the surface was performed by Scanning Electronic Microscopy before and after exposure to SCPS. Glow Discharge Optical Emission Spectroscopy was used to investigate the thickness of the U(400) sol-gel coatings as a function of the number of layers deposited with and without Rt in the coatings thickness. OPEN ACCESSCoatings 2015, 5 125

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Section: Electrochemical Impedance Spectroscopy (Eis)supporting

confidence: 78%

Influence of Experimental Parameters Using the Dip-Coating Method on the Barrier Performance of Hybrid Sol-Gel Coatings in Strong Alkaline Environments

2015

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“…X‐ray photoelectron spectroscopy data for cleaned DX56 show Zn 2p 1/2 and Zn 2p 3/2 photoelectron peaks at 1021.2 and 1044.0 eV, respectively, as well as a weak Al 2p photoelectron peak at 73.9 eV (S12 and S13). This is expected as Al is added to the galvanic Zn coating to control the structure of the intermetallic formed at the interface between the Zn coating and the underlying steel .…”

Section: Resultsmentioning

confidence: 99%

Studies of inherent lubricity coatings for low surface roughness galvanised steel for automotive applications

Hill

Holliman

McGettrick

et al. 2017

Lubrication Science

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Surface lubricity on TiO2‐coated galvanised steels can be controlled by solution depositing perfluorooctanoic (C8), lauric (C12) or stearic (C18) acids to avoid lubricating oils/emulsions or substrate pre‐etching to remove surface oxide that add cost and waste. Water contact angles reveal increased surface hydrophobicity on coated samples that correlate with linear friction testing, suggesting water contact angle can be used to screen lubricity compounds. Linear friction testing shows that C12 and C18 lower the coefficient of friction (μ) by 50–60% compared with uncoated substrates whilst C8 drops μ from 0.31 to 0.22. Surfaces have been characterised by X‐ray photoelectron spectroscopy, scanning electron microscopy and atomic force microscopy, whilst infrared confirms that as‐deposited coatings contain physisorbed and deprotonated acids chemisorbed through esters and thermal gravimetric analysis confirms increasing loadings from C8 to C12 to C18. Surface washing removes physisorbed material and lowers μ by increasing surface organisation and alkyl chain packing that enhances frictional energy dissipation through steric quenching. Copyright © 2017 John Wiley & Sons, Ltd.

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“…The method is widely used for investigation of the corrosion inhibition processes. 25,26 Fig . 2 shows the Nyquist and Bode-phase plots for mild steel in 0.1 M NaOH+ 0.5 M NaCl and in 0.1 M NaOH solutions in absence and presence of various concentrations of Prickly Pear methanolic and aqueous extracts, respectively at 25º.…”

Section: Electrochemical Impedance Spectroscopymentioning

confidence: 99%

Corrosion inhibition of steel by Prickly Pear: extraction, characterization and electrochemical studies

ABIDLI¹,

Souissi²,

Nóvoa³

2020

Rev.Roum.Chim.

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Aqueous and Methanolic extracts of Prickly Pear was tested as a corrosion inhibitor for mild steel using electrochemical impedance spectroscopy (EIS) in two different media. Impedance measurements showed that there are two phenomena in the inhibition process. The obtained results show that this plant extract could serve as an effective inhibitor for corrosion of steel in NaOH solutions with different NaCl content. The aqueous extract obtained gives inhibition around 96.9% in 0.1 M NaOH solution and the methanolic extract provided about 88.3% inhibition efficiency in 0.1 M NaOH+0.5 M NaCl solution. The EIS experimental data show frequency dispersion and therefore a modeling element with frequency dispersion behavior, a constant phase (CPE) has been used.

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Corrosion behaviour of galvanized steel and electroplating steel in aqueous solution: AC impedance study and XPS

Cited by 19 publications

References 28 publications

Influence of Experimental Parameters Using the Dip-Coating Method on the Barrier Performance of Hybrid Sol-Gel Coatings in Strong Alkaline Environments

Influence of Experimental Parameters Using the Dip-Coating Method on the Barrier Performance of Hybrid Sol-Gel Coatings in Strong Alkaline Environments

Studies of inherent lubricity coatings for low surface roughness galvanised steel for automotive applications

Corrosion inhibition of steel by Prickly Pear: extraction, characterization and electrochemical studies

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