Inhibition of carbon steel corrosion in acidic solution using some newly polyester derivatives

Farag, Ahmed A.; Ismail, Azzura; Migahed, M.A.

doi:10.1016/j.molliq.2015.08.033

Cited by 58 publications

(21 citation statements)

References 43 publications

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“…The (AZFD) molecules could be easily protonated in acidic solution, because of high electron density on it, and adsorbed on the cathodic centers of the CS and reduce the hydrogen evolution. On the other hand, the adsorption on anodic sites occurs via π-electrons of aromatic rings and unshared electron pairs on (O, N) heteroatoms exist in the investigated (AZFD) which reduce the anodic dissolution of CS 32 .…”

Section: Mechanism Of Corrosion Inhibitionmentioning

confidence: 99%

Performance of aza furamidine derivatives as new corrosion inhibitors for CS in acid environment: The Experimental and Quantum chemical studies

2018

jcbsc

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Three azafuramidine derivatives (AZFD) as new inhibitors for the corrosion of carbon steel (CS) in acidic solution has been examined by mass loss (ML), atomic absorption spectroscopy (AAS) and electrochemical techniques. The results demonstrated that these new (AZFD) act as good inhibitors for the corrosion of CS in acidic media. The inhibition efficiency (% €) increased as the inhibitor concentrations increases. Potentiodynamic polarization (PP) study showed that (AZFD) may be classified as mixed-type inhibitors. The) adsorption of(AZFD)on metal surface showed a Langmuir isotherm route. The surface analysis of the CS was investigated using ATR-FTIR, UV/visible spectroscopy and AFM analysis. Surface analysis of CS revealed formation of a protective adsorbed surface layer composed of (AZFD). Quantum chemical calculations of the azafuramidine derivatives molecules were computed and discussed.

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Section: Mechanism Of Corrosion Inhibitionmentioning

confidence: 99%

Performance of aza furamidine derivatives as new corrosion inhibitors for CS in acid environment: The Experimental and Quantum chemical studies

2018

jcbsc

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“…Because of higher tensile strength and lower cost of steel alloys, it was widely applied in infra structure of many industrial companies [1][2][3][4][5]. The alloying elements such as carbon and other elements are controlling the physical and mechanical properties [6][7][8]. However, the plain iron carbon alloys have carbon content in steel alloy ranged from 0.002% to 2.1% by weight.…”

Section: Introductionmentioning

confidence: 99%

Effect of Plating Materials on the Corrosion Properties of Steel Alloy 4130

Reda

Zohdy

Eessaa³

et al. 2019

Egypt. J. Chem.

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T he corrosion behavior of uncoated and Ni, Cu and Cd coated steel alloy 4130 in 3.5 wt. % NaCl solution was anticipated. The Ni-coated sample showed greater corrosion inhibition effect than both Cu-coated and Cd-coated depending on the obtained results of open circuit potential, polarization curves, impedance spectroscopy and cyclic voltammetry. The surfaces of uncoated and coated samples are characterized by scanning electron microscopy before and after immersion in salt solution. The best corrosion resistance and surface morphology achieved in Ni-coated steel alloy. The inhibition efficiencies of tested samples were 90.7, 89.1 and 56.9 for the Ni-coated, Cu-coated and Cd-coated respectively.

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“…The choice of suitable inhibitors depends mainly on the formulation as a reasonable use in various environments. Organic compounds characterized by distinct functional groups and heteroatoms such as nitrogen, oxygen, sulfur and aromatic rings are considered as effective organic inhibitors to protect the metal against corrosion [3,4]. The orientation and the shape of the molecule are decisive parameters in the inhibition of corrosion.…”

Section: Introductionmentioning

confidence: 99%

New quinoxaline derivative as a green corrosion inhibitor for mild steel in mild acidic medium: Electrochemical and theoretical studies

Laabaissi¹,

Benhiba²,

Rouifi³

et al. 2019

Int. J. Corros. Scale Inhib.

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The influence of new quinoxaline derivative namely (E)-3-(4-methylstyryl)quinoxalin-2(1H)one (QNMS) on the corrosion of mild steel in 1 M HCl was studied using using Tafel polarization and electrochemical impedance spectroscopy. Quantum chemical calculations were performed using methods based on density functional theory (DFT / B3LYP) and Monte Carlo simulations (MCs). The inhibitor studied [(E)-3-(4-methylstyryl)quinoxalin-2(1H)-one (QNMS)] showed a maximum inhibition efficiency of 91% at 10-3 M. Adsorption of QNMS on mild steel surface follows the Langmuir adsorption isotherm in order to discover the mode of adsorption process, various thermodynamic and activation parameters were evaluated. Potentiodynamic polarization studies show that QNMS compound acts as a mixed inhibitor. Data obtained from EIS measurements were analyzed to model the corrosion inhibition process through the appropriate equivalent circuit model. The EIS data bring that, the development of a protective layer of QNMS increases the charge transfer resistance and decreases the double layer capacitance of mild steel in acid medium. Quantum chemical calculations were employed to study the electronic properties of QNMS to ascertain the correlation between the inhibitory effect and the molecular structure. Both the experimental and theoretical (E HOMO , E LUMO , ΔE, µ, ΔN,... and Monte Carlo simulation) results are in good agreement with each other in this regard and confirm that QNMS is an effective inhibitor.

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Inhibition of carbon steel corrosion in acidic solution using some newly polyester derivatives

Cited by 58 publications

References 43 publications

Performance of aza furamidine derivatives as new corrosion inhibitors for CS in acid environment: The Experimental and Quantum chemical studies

Performance of aza furamidine derivatives as new corrosion inhibitors for CS in acid environment: The Experimental and Quantum chemical studies

Effect of Plating Materials on the Corrosion Properties of Steel Alloy 4130

New quinoxaline derivative as a green corrosion inhibitor for mild steel in mild acidic medium: Electrochemical and theoretical studies

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