Epoxy coating as effective anti-corrosive polymeric material for aluminum alloys: Formulation, electrochemical and computational approaches

Dagdag, Omar; Berisha, Avni; Mehmeti, Valbonë; Haldhar, Rajesh; Berdimurodov, Elyor; Hamed, Othman; Jodeh, Shehdeh; Lgaz, Hassane; Sherif, El‐Sayed M.; Ebenso, Eno E.

doi:10.1016/j.molliq.2021.117886

Cited by 58 publications

(18 citation statements)

References 50 publications

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“…A conformer search (Boltzmann jump technique; the number of conformers: 8000; utilizing the COMPASS II forcefield) was undertaken in the early phase of the procedure in order to acquire the lowest feasible starting energy for the molecule while speeding up DFT computations [29][30][31][32][33][34][35][36][37][38][39][40][41][42]. Calculations for DFT were started with the lowest-energy conformer shown by the image in Figure 5.…”

Section: Dft Analysismentioning

confidence: 99%

Experimental and theoretical investigations of new Schiff base compound adsorption on aluminium in 1 M HCl

Jafari

Ameri

Soltanolkottabi

et al. 2022

J. Electrochem. Sci. Eng.

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The new Schiff base, 2,2'-((1Z,1'Z)-(((propane-1,3-diylbis(oxy))bis(2,1-phenylene))bis(methanylylidene))bis(azanylylidene))diethanol, was investigated as a corrosion inhibitor of aluminium in 1 M HCl. Polarization and electrochemical impedance measurements were used for this purpose. Polarization curves showed that the compound is a mixed-type corrosion inhibitor. Also, the results showed an increase in inhibition efficiency as the concentration of the compound increased. The maximum corrosion inhibition efficiency of approximately 81 % was reached at the concentration of 2 mg/L of the inhibitor. The results of the density functional theory method were consistent with the experimental results. The surface morphology of the samples was examined under atomic force microscopy.

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Section: Dft Analysismentioning

confidence: 99%

Experimental and theoretical investigations of new Schiff base compound adsorption on aluminium in 1 M HCl

Jafari

Ameri

Soltanolkottabi

et al. 2022

J. Electrochem. Sci. Eng.

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“…The Nyquist spectra were also plotted for iron after its exposure to the same solutions for 48 h, which are seen in Figure 9. EIS experiments have successfully reported the corrosion and passivation processes [37][38][39][40][41][42][43][44]. The data estimated from EIS data were fitted to an equivalent circuit and the best fit is presented in Figure 10.…”

Section: Eis Measurementsmentioning

confidence: 99%

Alleviation of Iron Corrosion in Chloride Solution by N,N′-bis[2-Methoxynaphthylidene]amino]oxamide as a Corrosion Inhibitor

Sherif

Ahmed

2021

Crystals

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The alleviation of iron corrosion in 3.5% NaCl sodium chloride solution using N,N′-bis[2-methoxynaphthylidene]amino]oxamide (MAO) as a corrosion inhibitor has been reported. The work was achieved using various investigation techniques. Potentiodynamic cyclic polarization (PCP) displayed a powerful inhibition for the corrosion via reducing the iron’s cathodic and anodic reactions. This was reflected in reduced corrosion currents and increased polarization resistances in the presence and upon the increase of MAO concentration. The electrochemical impedance spectroscopy results indicated that MAO molecules provoke the corrosion resistance via increasing polarization resistance. The power of MAO on decreasing pitting attack was also investigated through measuring the change of current with time at −0.475 V(Ag/AgCl). Scanning electron microscopy images were taken of the surface after the current–time measurements were performed in the absence and presence of MAO. The current-time experiments indicated that MAO highly mitigates the corrosion of iron. The energy dispersive X-ray analyzer reported the products found on the tested surfaces. The effect of extending the exposure time from 1 h to 48 h was also tested and was found to alleviate the corrosion of iron, whether MAO molecules are absent or present.

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“… 22 , 23 Coatings composed of oxide nanoparticles are frequently used to protect metal substrates against corrosion in harsh environments. 24 , 25 The electrodeposition approach has the following competitive advantages: (a) low energy consumption for environmental sustainability, (b) rapid industrial scale-up, (c) simple, cost-effective fabrication, and (d) improved performance and adaptability due to controllable process parameters such as voltage, deposition time, current density, bath composition, pH, and temperature. 26 − 28 Because of their tribological and corrosion-resistant capabilities, Ni coatings have attracted a lot of interest in the industry.…”

Section: Introductionmentioning

confidence: 99%

Study of the Corrosion of Nickel–Chromium Alloy in an Acidic Solution Protected by Nickel Nanoparticles

2022

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This study uses nickel nanoparticles coated on the nickel–chromium (Ni–Cr) alloy by the electrodeposition technique to protect the alloy against corrosion. An open-circuit potential and potentiodynamic and linear polarization resistance in a 1 M H 2 SO 4 solution saturated with carbon dioxide were used to study the anticorrosion performance of nanoparticle coatings. When coated with nanomaterials, the corrosion rate of Ni–Cr alloy was lower than when it was bare, and the potential for corrosion increased from −0.433 V for uncoated Ni–Cr alloy to −0.103 V when the electrodes were exposed to saturated calomel. Electrochemical experiments show that nickel-coated Ni–Cr alloy corrosion in sulfuric acid media has high protective characteristics, with an efficiency of 83.69% at 0.165 mA/cm 2 current density when pH = 1 is used. As demonstrated by the results of this research, the nickel–chromium alloy can be protected from corrosion in acidic media by a low-acidity bath coating layer. Surface morphologies have shown that coatings at different acidic scales may be able to resist an acid attack because of their excellent adherence to the nickel–chromium alloy surface. Measures for determining and studying the composition of the alloy surface’s protective covering were improved using X-ray diffraction (XRD).

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Epoxy coating as effective anti-corrosive polymeric material for aluminum alloys: Formulation, electrochemical and computational approaches

Cited by 58 publications

References 50 publications

Experimental and theoretical investigations of new Schiff base compound adsorption on aluminium in 1 M HCl

Experimental and theoretical investigations of new Schiff base compound adsorption on aluminium in 1 M HCl

Alleviation of Iron Corrosion in Chloride Solution by N,N′-bis[2-Methoxynaphthylidene]amino]oxamide as a Corrosion Inhibitor

Study of the Corrosion of Nickel–Chromium Alloy in an Acidic Solution Protected by Nickel Nanoparticles

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