Corrosion inhibition of mild steel in 1M HCl solution by henna extract: A comparative study of the inhibition by henna and its constituents (Lawsone, Gallic acid, α-d-Glucose and Tannic acid)

Ostovari, A.; Hoseinieh, S. M.; Peikari, M.; Shadizadeh, Seyed Reza; Hashemi, Seyed Jalal

doi:10.1016/j.corsci.2009.05.024

Cited by 636 publications

(297 citation statements)

References 45 publications

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“…Allows with the decrease of IE (%) with increasing temperature confirm the mechanism of physical adsorption [18]. The negative sign of DH ads 0 shows that the adsorption of inhibitor is an exothermic process [25,26]. For physisorption, DG ads 0 is in the order of 40 kJ mol -1 while for chemisorption, DH ads 0 approaches 100 kJ mol -1 [27].…”

Section: Thermodynamic Parametersmentioning

confidence: 86%

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: Thermodynamic Parametersmentioning

confidence: 86%

Saccocalyx satureioides as corrosion inhibitor for carbon steel in acid solution

et al. 2016

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“…The depressed capacitive loop is also ascribed to dispersion effects, which have been attributed to roughness and inhomogeneities on the surface during corrosion. 28,29 In inhibitor-free solution, only one depressed capacitive loop can be observed and that can be attributed to the time constant of the charge transfer and the double layer capacitance.…”

Section: Electrochemical Impedance Spectroscopy Measurementsmentioning

confidence: 99%

Comparative study of the inhibitive action between the bitter orange leaf extract and its chemical constituent linalool on the mild steel corrosion in HCl solution

Abdel‐Gaber¹,

Hijazi²,

Younes³

et al. 2017

Quim. Nova

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Bitter orange, Citrus Aurantium (CA), extract and one of its chemical constituents, Linalool, have been evaluated as a corrosion inhibitor for mild steel in 0.5 mol L -1 hydrochloric acid (HCl) solution using potentiodynamic polarization, electrochemical impedance, Fourier transform infrared spectroscopy (FTIR), and atomic force spectroscopy (AFM) techniques. Functional groups of CA and Linalool were identified by FTIR spectroscopy. The Potentiodynamic polarization and electrochemical impedance studies showed that CA and Linalool act as mixed type inhibitors. The activation parameters showed that the corrosion inhibition takes place by spontaneous physical adsorption on the mild steel surface. Thermodynamic-kinetic model and Flory-Huggins isotherms were used to investigate the adsorption characteristics of CA and Linalool. The surface morphologies of mild steel specimens were studied using AFM, in which the surface roughness of the metal specimens on a micro scale was characterized.

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“…It has been found that one of the best methods of protecting metals against corrosion involves the use of synthetic organic compounds as corrosion inhibitors (1-3) which are substances that slow down the rate of corrosion (4,5). But many of these compounds unfortunately are highly toxic to both human beings and the environment (6). Due to the toxicity of some corrosion inhibitors, researches are concentrated toward the introduction of new, safe, non-toxic and environmentally benign natural products such as pharmaceutical compounds, leaves, fruits or seeds extracts, which can be used as corrosion inhibitors.…”

Section: Introductionmentioning

confidence: 99%

Studies on the inhibition of carbon steel corrosion in hydrochloric acid solution by expired Carvedilol drug

Fouda

Morsi

Mogy

2017

Green Chemistry Letters and Reviews

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An expired pharmaceutical product, Carvedilol, was studied as save drug to prevent carbon steel (CS) corrosion in acidic environments by using weight loss, potentiodynamic polarization, electrochemical impedance spectroscopy (EIS) and electrochemical frequency modulation (EFM) techniques. The inhibition efficiency increased with increasing drug dose and decreased with increasing temperature, reaching a maximum value of 98.94% at 25°C and 1.6 × 10 −4 M. Polarization data showed that the drug is of a mixed type. The inhibition of CS corrosion by Carvedilol can be attributed to the adsorption ability of drug molecules onto the reactive sites of the metal surface. The adsorption process follows the Langmuir isotherm via physical adsorption. The surface morphologies of CS were examined by atomic force spectroscopy (AFM). The results obtained from different techniques are in good agreement.

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Corrosion inhibition of mild steel in 1M HCl solution by henna extract: A comparative study of the inhibition by henna and its constituents (Lawsone, Gallic acid, α-d-Glucose and Tannic acid)

Cited by 636 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

Comparative study of the inhibitive action between the bitter orange leaf extract and its chemical constituent linalool on the mild steel corrosion in HCl solution

Studies on the inhibition of carbon steel corrosion in hydrochloric acid solution by expired Carvedilol drug

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