A concise review on corrosion inhibitors: types, mechanisms and electrochemical evaluation studies

Wonnie, Iling Aema; Ammar, Sh.; Kumar, Sachin; Ramesh, K.

doi:10.1007/s11998-021-00547-0

Cited by 107 publications

(58 citation statements)

References 166 publications

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“…Mild steel corrodes severely during these processes, especially with the use of hydrochloric acid, which is a terrible waste of resources and money [ 2 , 3 ]. To minimize the effect of corrosion, there has been considerable industrial and scientific interest in studying corrosion control, in order to develop new, more economical and effective compounds that are often added to the acidic solution [ 4 , 5 ]. Valuable control methods have been used that can act through different mechanisms, thus offering better performance [ 6 , 7 , 8 ].…”

Section: Introductionmentioning

confidence: 99%

Experimental and Theoretical Tests on the Corrosion Protection of Mild Steel in Hydrochloric Acid Environment by the Use of Pyrazole Derivative

et al. 2023

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In this study, 1,5-diallyl-1H-pyrazolo [3,4-d] pyrimidin-4 (5H)-one (PPD) was evaluated as an anticorrosion agent for mild steel (MS) in 1 M HCl. The analysis was performed by weight loss (WL), potentiodynamic polarization measurement, and electrochemical impedance spectroscopy (EIS). The Tafel polarization showed that PPD is a mixed-type inhibitor and reaches 94% of the protective efficiency at 10−3 M. EIS results indicated that the resistance to charge transfer increases with increasing inhibitor concentration and the corrosion of MS is controlled by a charge transfer process. The inhibitor adsorption on the MS surface obeyed the Langmuir’s adsorption isotherm. Thermodynamic parameters were calculated to elaborate the corrosion inhibition mechanism. The micrographic analysis revealed the existence of a barrier layer on the electrode surface with the presence of PPD. Theoretical examinations performed by electronic/atomic computer simulations confirmed that the obtained results were found to be consistent with experimental findings.

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Section: Introductionmentioning

confidence: 99%

Experimental and Theoretical Tests on the Corrosion Protection of Mild Steel in Hydrochloric Acid Environment by the Use of Pyrazole Derivative

et al. 2023

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“…The reduction of one order of magnitude from corrosion current density between the high concentration solution (10 ml) and the blank solution confirms the excellent role of the active functional group. This adsorption capability primarily interrupts the anodic and cathodic sites [48]. However, the cathodic region dominates the inhibition process (Fig.…”

Section: Discussion Of Saga As a Green Corrosion Inhibitormentioning

confidence: 99%

Development of saga (Abrus precatorius) seed extract as a green corrosion inhibitor in API 5l Grade B under 1m HCL solutions

Riastuti

Soedarsono

Aribowo

et al. 2022

EEJET

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The critical role of newly green corrosion inhibitors shows the disruption of cathodic and anodic reactions at the metals and solution interface. The object of this study is the development of Saga as a corrosion inhibitor to mitigate the effect of corrosive HCl 1M оn mild steel. The inhibitor was extracted using methanol to prepare various concentrations. Fourier transform infrared (FTIR) spectroscopy was used to determine the functional group of the inhibitor. The electrochemical impedance spectroscopy aided by the potentiodynamic polarization was utilized to evaluate the inhibitor’s effectiveness. Optical emission spectroscopy (OES) was implemented to determine the percentage of elements in mild steel. Based on the FTIR results, C=O, -OH, C=C, benzene, and C-O are accountable for the inhibitor to donate its lone pair of an electron to the 3-d orbital of iron metal. Increasing the inhibitor concentration decreases the capacitive double layer to elevate the inhibitor resistance. The higher inhibitor resistance of 29.33 Ω cm-1 increases as the concentration increases due to the depression of Cdl 420.16 µF cm2 at 10 ml inhibitor solution. Parallelly, it increases the inhibition efficiency at 65.58 %, slightly lower than the PP measurement of nearly 88 %. The higher value of adsorption/desorption constant, Kads, at 2.9 L mol-1 shows the strength of the inhibitor, which lowers the value of Gibbs free energy (ΔGads). The Saga inhibitor is considered a chemisorption inhibitor ΔGads –36.87 kJ/mol. The value demonstrates the formation of dative covalent bonding, which promotes the transferred electron from the inhibitor to the substrate. On the other hand, the Saga inhibitor abides by the Langmuir adsorption isotherm as the R2 value is 0.99.

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“…Figure 3 The shifting of the OCP in a noble (more positive) direction and the depletion of the ia of Al metal is seen with the addition of 500 ppm METcS in the BD-100, while the ia of Al is increased and shifted the corrosion potential in the less noble direction with the addition of 1000 ppm METcS or more in the BD-100, as noticed on the left-hand side of Figure 3(a). The electrochemical results revealed the fact that the addition of 500 ppm METcS in the BD-100 is enough to inhibit the anodic sides by utilizing an indiscernible adsorption film, which lessens the dissolution reaction of Al metal significantly [65]. Furthermore, additions of 1000-2000 ppm METcS control the corrosion rate of the Al metal in BD-100 by RI C 2022 https://doi.org/10.1051/e3sconf/202235501005 forming the adsorbed layers on both anodic and cathodic sites, which safeguards further corrosion reactions.…”

Section: Cooked-oil Residue (Cor)mentioning

confidence: 99%

A comparative study of the anticorrosive response ofTinospora cordifoliastem extract for Al and Cu in biodiesel-based fuels

et al. 2022

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The anticorrosive effect of methanol extract of Tinospora cordifolia stem for Al and Cu metals in pure biodiesel and its 10% blend with petrodiesel was investigated at 25±2 °C in a closed system by corrosion, inhibition efficiency, adsorption, and electrochemical tests. The corrosion inhibiting action of the plant extract for Cu in the biodiesel was more efficient than in the blend, while the extract showed more anticorrosive behavior of Al metal in the blend than in the biodiesel. Adsorption of the plant extract on the metal surface conformed to the Langmuir adsorption model. The plant extract functioned as a mixed-type corrosion inhibitor for both the metals in both biodiesel and its blend based on the experimental results. Outcomes of the study confirm the suggestive evidence to formulate the green extract-based biodiesel additives to enhance the anti-corrosive response for the Al and Cu metal parts of the vehicle engine. Nepal-origin Tinospora cordifolia stem extract could be used as an anticorrosive agent to control the corrosion of Al and Cu metals in biodiesel-based fuels.

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A concise review on corrosion inhibitors: types, mechanisms and electrochemical evaluation studies

Cited by 107 publications

References 166 publications

Experimental and Theoretical Tests on the Corrosion Protection of Mild Steel in Hydrochloric Acid Environment by the Use of Pyrazole Derivative

Experimental and Theoretical Tests on the Corrosion Protection of Mild Steel in Hydrochloric Acid Environment by the Use of Pyrazole Derivative

Development of saga (Abrus precatorius) seed extract as a green corrosion inhibitor in API 5l Grade B under 1m HCL solutions

A comparative study of the anticorrosive response ofTinospora cordifoliastem extract for Al and Cu in biodiesel-based fuels

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