INVESTIGATION OF CORROSION INHIBITION BEHAVIOR OF ACRYLIC TERPOLYMERS ON SAE1018 STEEL IN PETROLEUM SOLUTIONS

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VAKILI AZGHANDI MOJTABA; DAVOODI ALI; FARZI GHOLAMALI

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Journal: PETROLEUM RESEARCH Year:2016 | Volume:25 | Issue:85-1 Page(s): 204-216

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Title

INVESTIGATION OF CORROSION INHIBITION BEHAVIOR OF ACRYLIC TERPOLYMERS ON SAE1018 STEEL IN PETROLEUM SOLUTIONS

Author(s)

VAKILI AZGHANDI MOJTABA | DAVOODI ALI | FARZI GHOLAMALI | Issue Writer Certificate

Keywords

SAE 1018 STEELQ2

POLYMERIC CORROSION INHIBITORSQ2

POLARIZATIONQ2

EIQ2

PETROLEUM SOLUTIONQ2

Abstract

In this work, the corrosion inhibition performance of an environment friendly water-base acrylic terpolymer (methyl methacrylate/butyl acrylate/acrylic acid) on SAE 1018 STEEL in NACE standard solution containing CO2, H2S, CH3COOH, and 3.5 wt.% NaCl was investigated. Potentiodynamic POLARIZATION, electrochemical impedance spectroscopy, and optical microscopy were employed to investigate the corrosion behavior in the absence and the presence of various inhibitor concentrations in static and dynamic conditions using rotating disk electrode (RDE). The results show that blocking available anodic sites and reinforcing of the surface dielectric layers were the reasons for decreasing corrosion rate in static and dynamic conditions. The hydrodynamic condition has a positive effect on inhibitor efficiency in a way that whole efficiency values in hydrodynamic conditions are higher in comparison with the stagnant condition at an optimum concentration (0.8 mmol/l). The reason is attributed to the fact that by increasing the rotation speed, the inhibitor transfer from bulk solution to surface is enhanced. Also, it should be noted that optical microscopy examinations confirm all the results obtained by electrochemical methods. In addition, density functional theory (DFT) study shows that the oxygen atoms in monomers of the present terpolymer are suitable active sites for the adsorption of this inhibitor onto the surface. Finally, thermodynamic calculations also showed that the present inhibitor obeyed Langmuir adsorption isotherm and the absorbance on the surface is both physically and chemically.

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APA: Copy

VAKILI AZGHANDI, MOJTABA, DAVOODI, ALI, & FARZI, GHOLAMALI. (2016). INVESTIGATION OF CORROSION INHIBITION BEHAVIOR OF ACRYLIC TERPOLYMERS ON SAE1018 STEEL IN PETROLEUM SOLUTIONS. PETROLEUM RESEARCH, 25(85-1), 204-216. SID. https://sid.ir/paper/114999/en

Vancouver: Copy

VAKILI AZGHANDI MOJTABA, DAVOODI ALI, FARZI GHOLAMALI. INVESTIGATION OF CORROSION INHIBITION BEHAVIOR OF ACRYLIC TERPOLYMERS ON SAE1018 STEEL IN PETROLEUM SOLUTIONS. PETROLEUM RESEARCH[Internet]. 2016;25(85-1):204-216. Available from: https://sid.ir/paper/114999/en

IEEE: Copy

MOJTABA VAKILI AZGHANDI, ALI DAVOODI, and GHOLAMALI FARZI, “INVESTIGATION OF CORROSION INHIBITION BEHAVIOR OF ACRYLIC TERPOLYMERS ON SAE1018 STEEL IN PETROLEUM SOLUTIONS,” PETROLEUM RESEARCH, vol. 25, no. 85-1, pp. 204–216, 2016, [Online]. Available: https://sid.ir/paper/114999/en

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