The use of Euphorbia falcata extract as eco-friendly corrosion inhibitor of carbon steel in hydrochloric acid solution

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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“…The values of the C dl can be calculated from CPE parameter and R ct according to the following equation [21]:…”

Section: Electrochemical Impedance Spectroscopymentioning

confidence: 99%

Saccocalyx satureioides as corrosion inhibitor for carbon steel in acid solution

et al. 2016

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“…The characteristic parameters associated to the impedance diagrams (R ct and C dl ) and IE (%) are given in Table 4. The IE (%) was calculated from the following equation [28] …”

Section: Electrochemical Impedance Spectroscopy (Eis)mentioning

confidence: 99%

Corrosion inhibition of 1018 carbon steel in hydrochloric acid using Schiff base compounds

Zaafarany¹

2014

Int. J. Corros. Scale Inhib.

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The inhibition effect of some Schiff base compounds toward the corrosion of 1018 carbon steel in hydrochloric acid solution was studied using weight loss, galvanostatic polarization, and electrochemical impedance spectroscopy measurements. The percentage inhibition efficiency increased with increasing inhibitor concentration and with decreasing temperature. The polarization measurements indicated that the inhibitors are of mixed type and inhibit corrosion by adsorption on the steel surface. The adsorption process is described by the Freundlich adsorption isotherm. The activation energy and some activation thermodynamic parameters were calculated and explained. From the impedance data it is found that the corrosion of carbon steel is controlled by the charge transfer process at all concentrations of inhibitors.

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“…Consequently, the current focus in corrosion inhibitor research is on identifying and developing new classes of nontoxic, benign, and inexpensive alternatives. Some investigations have in recent times been made into the corrosion inhibiting properties of natural products of plant origin, and have been found to generally exhibit good inhibition efficiencies [1][2][3][4][5][6][7][8][9][10][11]. The significance of this area of research is primarily due to the fact that natural products are environmentally friendly and ecologically acceptable.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of alkaloids extract of Retama monosperma (L.) Boiss. stems as a green corrosion inhibitor for carbon steel in pickling acidic medium by means of gravimetric, AC impedance and surface studies

Fdil¹,

Tourabi²,

Derhali³

et al. 2018

jmes

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The use of Euphorbia falcata extract as eco-friendly corrosion inhibitor of carbon steel in hydrochloric acid solution

Cited by 170 publications

References 55 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 1018 carbon steel in hydrochloric acid using Schiff base compounds

Evaluation of alkaloids extract of Retama monosperma (L.) Boiss. stems as a green corrosion inhibitor for carbon steel in pickling acidic medium by means of gravimetric, AC impedance and surface studies

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