Deciphering the formation mechanism of a protective corrosion product layer from electrochemical and natural corrosion behaviors of a nanocrystalline zinc coating

Li, Qingyang; Feng, Zhongbao; Liu, Lihua; Xu, Hong; Wang, Ge; Li, Fenghuan; Liu, Anmin

doi:10.1039/c5ra02777b

Cited by 28 publications

(8 citation statements)

References 39 publications

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“…Further blank surface peaks of MS appearing at 520 cm À1 and 680 cm À1 are due to magnetite and 730 cm À1 . [46][47][48] However, due to the presence of inhibitor molecules the oxide peak on mild steel decreased owing to the presence of biolm. Further, the peaks appearing at 216 cm À1 and 290 cm À1 are attributed to the corrosion product of hematite on the mild steel surface.…”

Section: Microstructure Analysismentioning

confidence: 99%

Experimental and DFT studies on the ultrasonic energy-assisted extraction of the phytochemicals of Catharanthus roseus as green corrosion inhibitors for mild steel in NaCl medium

et al. 2020

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Section: Microstructure Analysismentioning

confidence: 99%

Experimental and DFT studies on the ultrasonic energy-assisted extraction of the phytochemicals of Catharanthus roseus as green corrosion inhibitors for mild steel in NaCl medium

et al. 2020

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“…However, above a certain value the increase in current density causes the deposit deterioration 2,4 . More recently it has been reported that the characteristics of the coating of Zn obtained by electrodeposition can be improved by the use of pulsed electrodeposition which raises the corrosion resistance of the coating compared to the direct current used in conventional deposition [5][6][7][8] . In a study 5 on the effect of direct current (DC), pulsed current (PC) and pulsed reverse current (PRC) on structure and corrosion resistance of Zn coating was found that PC and PCR coatings are more compact, thinner, less porous and more resistant to corrosion compared to DC coatings and these effects are more significant in PCR coatings.…”

Section: Introductionmentioning

confidence: 99%

Glycerol Effect on the Corrosion Resistance and Electrodeposition Conditions in a Zinc Electroplating Process

et al. 2019

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Zinc electrodeposition is an economical process of Zn coating compared to conventional galvanic process. The galvanizing process is used in various industrial sectors to protect ferrous alloys during the corrosion process. In buildings, the galvanizing process is widely used to coat mortar protective screens. The electrodeposition of zinc has a relatively low cost compared to other coating materials for the same purpose; however, its corrosion resistance is lower than that of most protective deposits. This study evaluated the effect of adding glycerol to the electrodeposition bath on the corrosion resistance, deposition efficiency, morphology and microstructure of the zinc electrodeposit in concentrations ranging from 0.03 to 0.82 M. The electrodeposition was performed on carbon steel AISI 1020 with a current density of 10 mA.cm-2. The electroplating solution composition was 0.10 M ZnCl 2 , 2.80 M KCl and 0.32 M H 3 BO 3. Electrodeposition time was 17.56 min, 5 µm thick coating, equivalent to the mass of 7.166E-3 g of zinc on the steel surface. Evaluation of the corrosion resistance was performed by means of the electrochemical tests of Anodic Voltammetry, Potentiodynamic Polarization and Electrochemical Impedance Spectroscopy (EIS) as well as Weight Loss tests in NaCl 0.5 M in 4 (four) different period of immersion. The morphology and microstructures of electrodeposited were analyzed using the techniques of Scanning Electron Microscopy (SEM) and Spectrometry X-Ray Diffraction (XRD). The presence of glycerol in the electrodeposition bath decreased the deposition efficiency; however, it increased corrosion resistance and promoted the formation of more compact and refined electrodeposited coatings. Moreover, the results showed that the corrosion rate does not vary linearly with the addition of glycerol.

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“…Although there has been much documented research on the properties of Zn-Ni alloys, [10][11][12] there is little published work on the effect of orientation on the properties of Zn-based coatings. Li and co-workers have studied the deposition parameters, 13 corrosion behavior, 14 and tribological behavior 15 of nanocrystalline Zn coatings using pulsed electrodeposition methods. However, although Li et al 15 studied the wear behavior of electrodeposited Zn, the focus of their work was mainly the effect of grain renement on the mechanical properties and wear behavior, rather than the crystallographic orientation.…”

Section: Introductionmentioning

confidence: 99%

Effect of crystallographic orientation on the tribological behavior of electrodeposited Zn coatings

2016

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Deciphering the formation mechanism of a protective corrosion product layer from electrochemical and natural corrosion behaviors of a nanocrystalline zinc coating

Abstract: A hydrophobic protective corrosion product film (NC-1) with a nano-wire structure is formed on the surface of a nanocrystalline zinc coating.

Cited by 28 publications

References 39 publications

Experimental and DFT studies on the ultrasonic energy-assisted extraction of the phytochemicals of Catharanthus roseus as green corrosion inhibitors for mild steel in NaCl medium

Experimental and DFT studies on the ultrasonic energy-assisted extraction of the phytochemicals of Catharanthus roseus as green corrosion inhibitors for mild steel in NaCl medium

Glycerol Effect on the Corrosion Resistance and Electrodeposition Conditions in a Zinc Electroplating Process

Effect of crystallographic orientation on the tribological behavior of electrodeposited Zn coatings

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