Novel benzimidazole derivatives as corrosion inhibitors of mild steel in the acidic media. Part I: Gravimetric, electrochemical, SEM and XPS studies

Tang, Yongming; Zhang, Fan; Hu, Shengxiang; Cao, Ziyi; Wu, Zhenglei; Jing, Wenheng

doi:10.1016/j.corsci.2013.04.053

Cited by 340 publications

(110 citation statements)

References 45 publications

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“…Several scientists in their studies (Table 3) reported similar results [2,4,6,[15][16][17][18][19], which confirm that the SSE act as effective inhibitors. The evolution in inhibition efficiency may be attributed to the adsorption of the particles at the carbon steel (X52) surfaces [20]. As the temperature increases, the corrosion rate (Cr) increases and inhibition efficiency decreases (Fig.…”

Section: Weight Loss Measurementsmentioning

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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Section: Weight Loss Measurementsmentioning

confidence: 99%

Saccocalyx satureioides as corrosion inhibitor for carbon steel in acid solution

et al. 2016

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“…Only one capacitive loop at the higher frequency range is observed which means that the corrosion of CS is controlled by the charge transfer process [16,17]. The increasing diameter of loop obtained in 1 M H 2 SO 4 in the presence of EAE and BE indicated the corrosion inhibition and the strengthening of inhibitor film [18].…”

Section: Weight Loss Measurementsmentioning

confidence: 92%

Corrosion inhibition of carbon steel in 1 M H2SO4 solution by Thapsia villosa extracts

et al. 2016

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Ethyl acetate extract (EAE) and butanolic extract (BE) of Thapsia villosa were investigated as corrosion inhibitors of Carbon Steel (CS) in 1 M H 2 SO 4 using electrochemical impedance spectroscopy (EIS) techniques, potentiodynamic polarization and weight loss measurements. The effect of temperature on the corrosion behavior of CS was studied in the range of 20-40°C. The experimental results show that EAE and BE are good corrosion inhibitors and the protection efficiency increased with increasing concentration of the extracts, but decrease with rise in temperature. The EAE and BE act as a mixed types inhibitors. The adsorption of extracts on CS surface follow Langmuir isotherm. The apparent energies, enthalpies and entropies of the dissolution process were discussed.

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“…Thus, as the values of obtained with the cefixima and aminobenzylpenicillin inhibitors are higher, this is an indication of the feasibility of adsorption of species drugs on the electrode surface, rather than desorption 59 . Moreover, the values of negative that got for both cefixima and aminobenzylpenicillin in inhibitors reflect the spontaneous nature of the adsorption and the constancy of the protective layer that forms on working surface [55,54]. Normally, a value of standard free energy up to " -20 kJ mol -1 " or less corresponds with the electrostatic interactions that exist between the charged surface electrode and the inhibitor species following the physisorption process.…”

Section: ………………(6)mentioning

confidence: 99%

“…However, this can only be used as a guide: it is not considered conclusive because of the water molecules on the electrode surface, which participate in a competitive adsorption process, while to remove them from the carbon steel surface electrode requires a significant activation energy [31,49]. This means that both the physisorption and chemisorption processes happen instantaneously 54 enabling the drug speciesto be adsorbed on the metal surface. On the basis of these indicators, it is possible to determine the relationship between the surface of the electrode and the corrosion inhibition so as to elucidate the type and strength of adsorption process.…”

Section: Effect Of Temperature and Adsorption Considerationsmentioning

confidence: 99%

“…Therefore, the potentiodynamic test data, which relate the degree of surface coverage with concentration at different temperatures, are fitted by using Langmuir's adsorption isotherm to yield the best correlation regression value (Table 4 and Fig. 7 The Langmuir adsorption equation, which describes the monolayer of protective film that forms on the electrode surface is expressed by the following equation [31,[51][52][53][54][55].…”

Section: Effect Of Temperature and Adsorption Considerationsmentioning

confidence: 99%

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A Study into the Corrosion Inhibition of Carbon Steel in Acidic Medium Using Eco-Friendly Compounds

2017

Irq. Nat. J. Chem.

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The corrosion inhibition effects of cefixima and aminobenzylpenicillin drug inhibitors in 0.05M deaerated sulfuric acid solution for carbon steel have been studied by using electrochemical techniques and quantum chemical calculations as well as scanning electron microscope (SEM). It is observed from the experimental findings that both compounds perform as good inhibitors and behave according to mixed type inhibitor in terms of their inhibitory action. Additionally, it was found the percentage of corrosion inhibition become maximal when the concentrations of the cefixima and aminobenzylpenicillin inhibitors are increased. The influence of temperature on the corrosion of carbon steel has been investigated and the activation energy values estimated. The corrosion efficiency decreases with increasing the temperature range. The parameters of thermodynamic have been determined and indicate that the adsorption mechanism follows the Langmuir isotherm model and forms a protective layer on carbon steel surface electrode, which was characterized by scanning electron microscope measurements, to prevent a corrosion process. Quantum chemical calculations have been performed to provide evidence for corrosion inhibition according to the chemical structures of the cefixima and aminobenzylpenicillin drug inhibitors.

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Novel benzimidazole derivatives as corrosion inhibitors of mild steel in the acidic media. Part I: Gravimetric, electrochemical, SEM and XPS studies

Cited by 340 publications

References 45 publications

Saccocalyx satureioides as corrosion inhibitor for carbon steel in acid solution

Saccocalyx satureioides as corrosion inhibitor for carbon steel in acid solution

Corrosion inhibition of carbon steel in 1 M H2SO4 solution by Thapsia villosa extracts

A Study into the Corrosion Inhibition of Carbon Steel in Acidic Medium Using Eco-Friendly Compounds

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