Electrochemical Corrosion Performance of Aromatic Functionalized Imidazole Inhibitor Under Hydrodynamic Conditions on API X65 Carbon Steel in 1 M HCl Solution

Ismail, Azzura; Irshad, Hafiz Muzammil; Zeino, Aasem; Toor, Ihsan‐ul‐Haq

doi:10.1007/s13369-019-03745-6

Cited by 24 publications

(15 citation statements)

References 51 publications

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“…This method is quick and easy, and it is the only technique that provides mechanistic information on anodic and cathodic reactions [5,9]. Unlike iron, aluminum and copper alloys [25], the reliability and consistency of the measurement of the corrosion rate of Mg alloys using polarization curves must be seriously questioned [1,7,10,[26][27][28][29], and the values may be various orders of magnitude less than the real ones (for weight loss or hydrogen evolution techniques) [7,10,[26][27][28][29]. This significant difference might be due to (a) the increase in the hydrogen evolution rate observed during anodic polarization (often termed the "negative difference effect" or NDE), resulting in the absence of a sufficient linear Tafel region in the polarization curves (Figure 4) [30]; (b) the partial disintegration of specimens into fine metallic particles; (c) participation of unstable Mg + intermediates during anodic dissolution; and (d) a significant difference in the instantaneous corrosion rate determined by the potentiodynamic polarization method compared with the steady-state corrosion rate [12,31].…”

Section: Common Methods For the Estimation Of The Corrosion Rate In Mg Alloysmentioning

confidence: 99%

Electrochemical Impedance Spectroscopy for the Measurement of the Corrosion Rate of Magnesium Alloys: Brief Review and Challenges

Feliú

2020

Metals

146

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From a technological point of view, measurement of the corrosion rate of magnesium (Mg) and its alloys is critical for lifetime predictions of Mg-based structures and for comparative assessments of their corrosion protection ability. Whilst weight loss, hydrogen evolution, and polarization curves methods are frequently used for measuring the corrosion rate, the determination of values by electrochemical impedance spectroscopy (EIS) is relatively scarce and has only been realized recently. This technique seems to be the most suitable for monitoring corrosion rate values due to its “non-destructive” character, its reproducibility, and its reliable determination of small corrosion rates, much lower than those measured by other techniques. This review aims to picture the state-of-the-art technique of using EIS for measuring the corrosion rate of Mg. This paper starts by introducing some fundamental aspects of the most widely used methods for monitoring the corrosion rate of Mg/Mg alloy and continues by briefly explaining some of the fundamental concepts surrounding EIS, which are essential for the user to be able to understand how to interpret the EIS spectra. Lastly, these concepts are applied, and different approaches that have been proposed to obtain quantitative values of corrosion rate since the 1990s are discussed.

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Section: Common Methods For the Estimation Of The Corrosion Rate In Mg Alloysmentioning

confidence: 99%

Electrochemical Impedance Spectroscopy for the Measurement of the Corrosion Rate of Magnesium Alloys: Brief Review and Challenges

Feliú

2020

Metals

146

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“…Many papers have been published on the effects of chloride solutions on steel corrosion [31,33]. Considering the second phase developed in Figure 6(c), the EECs of R sol ð Q ct R ct Þ and R sol ðQ film ðR film ðQ ct R ct ÞÞÞ were used, and only R sol ðQ film ðR film ðQ ct R ct ÞÞÞ gave the best fitting results for all data.…”

Section: Electrochemical Investigation Of the Cui Behavior Of Cs And Ssmentioning

confidence: 99%

In Situ Monitoring of Corrosion under Insulation Using Electrochemical and Mass Loss Measurements

Yang

Liu

2022

International Journal of Corrosion

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Corrosion under insulation (CUI) refers to the external corrosion of piping and vessels when they are encapsulated in thermal insulation. To date, very limited information (especially electrochemical data) is available for these “difficult-to-test” CUI conditions. This study was aimed at developing a novel electrochemical sensing method for in situ CUI monitoring and analysis. Pt-coated Ti wires were used to assemble a three-electrode electrochemical cell over a pipe surface covered by thermal insulation. The CUI behavior of X70 carbon steel (CS) and 304 stainless steel (SS) under various operating conditions was investigated using mass loss, linear polarization resistance (LPR), and electrochemical impedance spectroscopy (EIS) measurements. It was found that both the consecutive wet and dry cycles and cyclic temperatures accelerated the progression of CUI. LPR and EIS measurements revealed that the accelerated CUI by thermal cycling was due to the reduced polarization resistance and deteriorated corrosion film. Enhanced pitting corrosion was observed on all tested samples after thermal cycling conditions, especially for CS samples. The proposed electrochemical technique demonstrated the ability to obtain comparable corrosion rates to conventional mass loss data. In addition to its potential for in situ CUI monitoring, this design could be further applied to rank alloys, coatings, and inhibitors under more complex exposure conditions.

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“…Physisorption involves electrostatic force of interaction between ionic charges at the mild steel and the solution interface. On the other hand, chemisorption involves charge transfer from the KYNA molecules to the mild steel surface through a coordinate bond which is more stable type of adsorption than physisorption even at high temperature [40,55]. Adsorption isotherm correlates the surface coverage (θ) with the concentrations of the KYNA.…”

Section: Adsorption Isotherm Studiesmentioning

confidence: 99%

Experimental and computational approach of an expired antibiotic drug Kynurenic acid as an efficient corrosion inhibitor for mild steel in HNO3 medium

et al. 2021

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An expired antibiotic drug Kynurenic acid (KYNA) was investigated for its adsorption and corrosion inhibition performance on mild steel (MS) in 1.0 M HNO 3 solution. Chemical methods like weight loss measurement, electrochemical methods like impedance spectroscopy, potentiodynamic polarization and linear polarization measurements were used to identify the adsorption behavior of KYNA in HNO 3 solution. The inhibition efficiency improved with an increase in KYNA concentration in nitric acid medium. The adsorption process of KYNA was spontaneous and favored Langmuir adsorption isotherm. Potentiodynamic polarization measurements indicate that the evaluated inhibitor acts as mixed type. The values of thermodynamic and activation parameters (R 2 and ΔG ads 0 ) were calculated and discussed. The surface morphology of MS was characterized by using scanning electron microscopy, atomic force microscopy, Fourier transforms infrared spectroscopy and theoretical study. From both the experimental and theoretical studies, the investigated inhibitor molecule exhibited surface active properties and performed as a good inhibitor for corrosion control of MS in nitric acid medium. The experimental results corroborated with results obtained from theoretical molecular dynamics simulation with density functional theory studies.

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Electrochemical Corrosion Performance of Aromatic Functionalized Imidazole Inhibitor Under Hydrodynamic Conditions on API X65 Carbon Steel in 1 M HCl Solution

Cited by 24 publications

References 51 publications

Electrochemical Impedance Spectroscopy for the Measurement of the Corrosion Rate of Magnesium Alloys: Brief Review and Challenges

Electrochemical Impedance Spectroscopy for the Measurement of the Corrosion Rate of Magnesium Alloys: Brief Review and Challenges

In Situ Monitoring of Corrosion under Insulation Using Electrochemical and Mass Loss Measurements

Experimental and computational approach of an expired antibiotic drug Kynurenic acid as an efficient corrosion inhibitor for mild steel in HNO3 medium

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