Electropolymerized durable coatings deposited onto Pt-electrode as corrosion inhibitor for mild steel

El-Hafeez, Ghada M. Abd; El-Rabeie, Mohamed M.; Gaber, A. F.; Farag, Zeinab R.

doi:10.1080/01694243.2021.1963602

Cited by 8 publications

(4 citation statements)

References 53 publications

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“…The analogous results were also reported by Wang et al [ 33 ], who found that PANI-protected 304 stainless steel possessed higher apparent current density than the bare substrate. The elevated apparent current density for the CPs-coated metal may be primarily related to the anodic protection performance of electroactive polymer [ 37 ]. Kinetic parameters, namely corrosion current density ( i corr ), corrosion potential ( E corr ) and anodic ( β a ) and cathodic ( β c ) Tafel slopes are listed in Table 2 .…”

Section: Resultsmentioning

confidence: 99%

Optimized Anticorrosion of Polypyrrole Coating by Inverted-Electrode Strategy: Experimental and Molecular Dynamics Investigations

et al. 2022

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To improve the poor adhesion and the ensuing insufficient anticorrosion efficacy of electropolymerized polypyrrole (PPy) on copper surface, an inverted-electrode strategy was applied after the passivation procedure, for which the compact coating (PPy-I) was deposited on the substrate in a cathodic window. Morphological and physical characterizations revealed that PPy-I exerted satisfactory adhesion strength and suitable thickness and conductivity compared with the analogue prepared via the traditional protocol (PPy-T). Potentiodynamic polarization, electrochemical impedance spectroscopy and frequency modulation were employed to ascertain the propitious protection of PPy-I for copper in artificial seawater (ASW). Due to the dominant electroactivity, the PPy-I-coated sample possessed higher apparent current density and lower charge transfer resistance than its PPy-T-protected counterpart, which maintained the passivation of the substrate. Surface analysis also supported the viability of PPy-I for copper in ASW for a well-protected surface with inferior water wettability. Molecular dynamics simulations evidenced that PPy-I with the higher density retained efficient anticorrosion capacity on copper at elevated temperatures. Therein, the derived time-dependent spatial diffusion trajectories of ions were locally confined with low diffusion coefficients. Highly twisted pore passages and anodic protection behavior arising respectively from the tight coating architecture and electroactivity contributed to the adequate corrosion resistance of PPy-I-coated copper.

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Section: Resultsmentioning

confidence: 99%

Optimized Anticorrosion of Polypyrrole Coating by Inverted-Electrode Strategy: Experimental and Molecular Dynamics Investigations

et al. 2022

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“…EIS was performed at a steady state potential, and it was performed within the frequency range of 100 000-0.1 Hz with a peak-to-peak amplitude of 10 mV [39,40]. Te electrochemical impedance parameters have been ftted using the Z m view software with a suitable equivalent circuit [17,41].…”

Section: Electrochemical Measurementsmentioning

confidence: 99%

“…Te polythiophene (PT), polypyrrole (PPy), and polycarbazole (PCz) have also been used as corrosion inhibitors [14][15][16]. Abd El-Hafeez et al recently used poly (salicylic acid-co-N-methylaniline), poly(SA-co-NMA), and poly(o-bromophenol-co-N-methylaniline), (poly(OBP-co-NMA)) as corrosion inhibitors for mild steel [17,18]. Te results showed that the used polymers increased the corrosion protection efciency of the passivated mild steel samples.…”

Section: Introductionmentioning

confidence: 99%

Computational, Kinetics, and Corrosion Protection Aspects of Electrodeposited Poly(Salicylic Acid) Coatings as a Corrosion Inhibitor for Mild Steel

El-Hafeez

El-Rabeie

Anouar

et al. 2022

Journal of Chemistry

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Poly(salicylic acid) PSA has been electrochemically deposited onto a Pt electrode. The kinetics of the polymerization reaction has been studied. The polymer structure was confirmed and characterized using IR spectroscopy, XRD, SEM, and TGA analysis. The deposited PSA was then collected from the Pt surface and tested as a corrosion inhibitor for a mild steel electrode in an aqueous medium of 1 M sulfuric acid. The corrosion behavior was then evaluated using potentiodynamic polarization and electrochemical impedance spectroscopy (EIS). Corrosion measurements showed that the inhibition efficiency of 20, 50, and 100 ppm of PSA was 33, 57, and 74%, respectively. The inhibition mechanism was proved using adsorption isotherms as well as quantum calculations. The inhibition of the corrosion process was due to the adsorption of PSA on the steel surface, which was found to comply with the Langmuir adsorption isotherm.

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“…In the last years the search for renewable sources of readily available materials that replaces inorganic and organic metal corrosion inhibitors CIs have continued to get more attention from scientists. Eco-friendly substances "green inhibitors" were recently tested as corrosion inhibitors because of their low-cost and are ecologically friendly, Polymers are one of well-known substances that have been used for this purpose [1][2][3][4][5]. Adding to the previous requirements of corrosion inhibitors, polymers were principally used due to the variety of the multiple adsorption centers in their structures and their inherent stability as well [6].…”

Section: Introductionmentioning

confidence: 99%

The Adsorption Behavior of Poly(acrylamide) / Poly(N-vinylpyrrolidone) Blends as Green Corrosion Inhibitors for Mg-Al Alloy: Experimental and DFT Studies

Helal,

Abd El-Hafeez,

Mohammed

et al. 2023

Labyrinth: Fayoum Journal of Science and Interdisciplinary Stud

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Eco-friendly organic compounds have attracted attention to be examined as corrosion inhibitors to control metallic corrosion process of pure metals and metal alloys in different media. Polymers are one of the well-known materials, which are used to inhibit metallic corrosion. The inhibition effect poly(N-vinylpyrrolidone) (PVP), poly(acrylamide) (PAM) and their blends on the corrosion behavior of magnesium alloy (Mg-10Al) in an aqueous acidic sulphate aerated unstirred solutions. Electrochemical impedance spectroscopy (EIS), potentiodynamic polarization and quantum calculations methods were used to investigate the corrosion behavior over a range of temperatures and concentrations. The data obtained from the potentiodynamic polarization method indicated that the used polymeric additives behave as a mixedtype inhibitor. The results showed that the dominant process in controlling the corrosion of the tested alloy was a charge transfer process. The corrosion inhibition efficiency was found to be 81.6% and 83% for PAM and PVP, respectively. The results showed that the adsorption of PVP and PAM on the alloy surface was found to comply with the Langmuir adsorption isotherm. A proposed mechanism was suggested to explain the inhibition action of the used polymers. Also the surface morphology was examined using atomic force microscopy AFM.

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Electropolymerized durable coatings deposited onto Pt-electrode as corrosion inhibitor for mild steel

Cited by 8 publications

References 53 publications

Optimized Anticorrosion of Polypyrrole Coating by Inverted-Electrode Strategy: Experimental and Molecular Dynamics Investigations

Optimized Anticorrosion of Polypyrrole Coating by Inverted-Electrode Strategy: Experimental and Molecular Dynamics Investigations

Computational, Kinetics, and Corrosion Protection Aspects of Electrodeposited Poly(Salicylic Acid) Coatings as a Corrosion Inhibitor for Mild Steel

The Adsorption Behavior of Poly(acrylamide) / Poly(N-vinylpyrrolidone) Blends as Green Corrosion Inhibitors for Mg-Al Alloy: Experimental and DFT Studies

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