Corrosion inhibition of the mild steel in 0.5M HCl by 2-butyl-hexahydropyrrolo[1,2-b][1,2]oxazole

Moretti, Giuseppe; Guidi, Francesca; Fabris, Fabrizio

doi:10.1016/j.corsci.2013.06.044

Cited by 162 publications

(49 citation statements)

References 69 publications

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“…However, the E pzc of carbon steel in presence of HMTH is more negative. In HCl solution, the HMTH molecules may exist in protonated form in equilibrium, which is consistent with the points of Sudhish, 54,55 Pongsak, 56 Demet, 57 Moretti,58 who presented that organic inhibitors can turn to -onium ions in acid solutions and then adsorb on the negatively charged metals by electrostatic forces. In addition, Haoqing Wu has presented that the E pzc of metals can be more positive when cations absorb on the surface of metal.…”

Section: Scanning Electron Microscopy (Sem)supporting

confidence: 63%

Study of Adsorption Behavior and Inhibition Mechanism of Mild Steel in Hydrochloric Acid by a Novel Thiadiazole Derivative

Cong

et al. 2015

Electrochemistry

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N′-(4-hydroxy-3-methoxybenzylidene)-2-(5-p-tolyl-1,3,4-thiadiazol-2-ylthio) acetohydrazide (HMTH) was studied as a novel corrosion inhibitor for carbon steel in hydrochloric acid solution by potentiodynamic polarization curves, electrochemical impedance spectroscopy (EIS), chronoamperometry (CA), cyclic voltammetry (CV) techniques and Quantum chemical calculation. The surface morphology of carbon steel in HCl solution in the absence and presence of HMTH was investigated by scanning electron microscopy (SEM). The mechanism of adsorption was determined from Fourier transform infrared spectroscopy (FTIR) and the potential of zero charge (E pzc ). HMTH was found to be an effective corrosion inhibitor by forming a stable adsorption layer on carbon steel.

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Section: Scanning Electron Microscopy (Sem)supporting

confidence: 63%

Study of Adsorption Behavior and Inhibition Mechanism of Mild Steel in Hydrochloric Acid by a Novel Thiadiazole Derivative

Cong

et al. 2015

Electrochemistry

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“…inhibitory activity increases the thickness of the double layer 42,56 . These two features contribute to diminish C dl , which is in accordance both with the decreasing of CPE dl values for increasing amounts of castor bark powder (Table 3) and with the adsorption of inhibiting molecules to the electrode surface, previously indicated by the adsorption isotherm.…”

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confidence: 99%

Evaluation of Castor Bark Powder as a Corrosion Inhibitor for Carbon Steel in Acidic Media

et al. 2017

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The inhibition effect of castor bark powder obtained from Ricinus communis on AISI 1020 carbon steel in acidic media (HCl 0.5 mol.L -1 ) has been studied by electrochemical impedance spectroscopy (EIS), polarization curves, scanning vibrating electrode technique (SVET) and weight loss measurements. Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM) were employed as characterization techniques. The EIS and gravimetric results showed that the inhibitory efficiency increases with inhibitor concentration achieving 83%. Polarization curves indicated that the castor bark powder acts as mixed inhibitor. The adsorption of the powder components on the metal surface follows the Langmuir isotherm. The FTIR analyses indicate the presence of C, N and O heteroatoms, incorporated in functional groups mainly related to the presence of carboxylic acids as ricinoleic acid, which could be responsible for the inhibitory properties of the powder. SEM analyses showed that the corrosion process was retarded in the presence of inhibitor in the electrolyte, which was confirmed by SVET measurements. Therefore, the results indicate that castor bark powder has potential to be a corrosion inhibitor for carbon steel in acidic media.

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“…E corr nearly does not change in the presence of SSE. According to Li and Moretti [24,37], the inhibition category belongs to geometric blocking effect. That is, the inhibition action manifest through the reduction of the reaction area on the surface of the corroding metal [23].…”

Section: Polarization Measurementmentioning

confidence: 99%

Saccocalyx satureioides as corrosion inhibitor for carbon steel in acid solution

et al. 2016

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The inhibitory effect of the crude ethyl acetate extract of Saccocalyx satureioides was estimated on the corrosion of carbon steel (X52) in 1 M HCl solution sing weight loss measurement, potentiodynamic polarization, electrochemical impedance spectroscopy and scanning electron microscopy techniques. Potentiodynamic polarization curves indicated that the plants extract behaves as a mixed-type inhibitor. The adsorption of the inhibitor on the carbon steel surface was found to follow Freundlich adsorption isotherm. The free energies, enthalpies and entropies for the adsorption and dissolution process were discussed in details. The inhibiting action increases with increasing concentration of the extract. The results obtained show that the extract of the aerial parts of Saccocalyx satureioides could serve as an effective corrosion inhibitor of carbon steel (X52) in hydrochloric acid medium.

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Corrosion inhibition of the mild steel in 0.5M HCl by 2-butyl-hexahydropyrrolo[1,2-b][1,2]oxazole

Cited by 162 publications

References 69 publications

Study of Adsorption Behavior and Inhibition Mechanism of Mild Steel in Hydrochloric Acid by a Novel Thiadiazole Derivative

Study of Adsorption Behavior and Inhibition Mechanism of Mild Steel in Hydrochloric Acid by a Novel Thiadiazole Derivative

Evaluation of Castor Bark Powder as a Corrosion Inhibitor for Carbon Steel in Acidic Media

Saccocalyx satureioides as corrosion inhibitor for carbon steel in acid solution

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