Chemical and electrochemical investigations of high carbon steel corrosion inhibition in 10 % HCl medium by quinoline chalcones

Ayyannan, Ganesan; Karthikeyan, Kuppusamy; Vivekananthan, S.; Gopiraman, Mayakrishnan; Rathinavelu, Arumugam

doi:10.1007/s11581-012-0812-y

Cited by 15 publications

(9 citation statements)

References 35 publications

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“…Generally, if the displacement in the E corr is more than ±85 mV with respect to corrosion potential of the blank, the inhibitor can be considered as a distinctive cathodic or anodic type. In the present study, the displacement was not more than ±85 mV (66 mV) and suggests a mixed type of inhibition [24]. Furthermore, there is no significant variation in b a and b c values, which indicates that the presence of CC in corrosive media does not alter the corrosion reaction mechanism, but acts as an adsorptive inhibitor, retarding both anodic and cathodic reactions by blocking the active sites [22,27].…”

Section: Potentiodynamic Polarization Measurementscontrasting

confidence: 39%

“…4). The shift in the phase angle is due to the formation of inhibitor film, which changes the structure of the electrode interface, and the increase in phase angle with concentration is correlated with the progress of surface coverage by the inhibitor [24,25]. Meanwhile, the increase in IZI indicates the better inhibition performance of CC [26].…”

Section: Eis Studiesmentioning

confidence: 99%

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Electrochemical, gravimetric and quantum chemical analysis of mild steel corrosion inhibition by colchicine in 1 M HCl medium

et al. 2015

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The inhibition effect of colchicine (CC) on mild steel (MS) corrosion in 1 M HCl solution has been investigated by electrochemical techniques such as electrochemical impedance spectroscopy, potentiodynamic polarization, chronoamperometry and also by the gravimetric method. Polarization studies showed that CC acts as mixed type corrosion inhibitor. The inhibitor adsorption process in the MS/ CC/HCl system was studied at different temperatures (303-333 K). The adsorption of CC on MS surface is an exothermic process and obeys the Langmuir adsorption isotherm. Based on potential of zero charge values and quantum chemical parameters, the mechanism of adsorption has been proposed.

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Section: Potentiodynamic Polarization Measurementscontrasting

confidence: 39%

Section: Eis Studiesmentioning

confidence: 99%

Electrochemical, gravimetric and quantum chemical analysis of mild steel corrosion inhibition by colchicine in 1 M HCl medium

et al. 2015

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“…These results are consistent with values of fraction electrons transferred from aminobenzylpenicillin and cefixima inhibitors to metal iron ( ) which were calculated according to equation (9) ………………. (9) The parameters which were used in the calculation are defined in detail in previous reports [92][93][94][95][96][97] . If then this implies to increase the donation of electron transfer from the aminobenzylpenicillin and cefixima molecules to the surface of the metal 91,92 and corresponds with an increasing value of , the results are shown in Table 4 and are in agreement with the experimental observations.…”

Section: Fig (10) : Homo and Lumo Images For The Cefixima And Aminobementioning

confidence: 99%

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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“…The surface coverage (θ) of the inhibitor on the carbon-steel surface was expressed by the following equation [13]:…”

Section: Weight Loss Measurementsmentioning

confidence: 99%

The inhibition of carbon-steel corrosion in seawater by streptomycin and tetracycline antibiotics: An experimental and theoretical study

et al. 2016

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Chemical and electrochemical investigations of high carbon steel corrosion inhibition in 10 % HCl medium by quinoline chalcones

Cited by 15 publications

References 35 publications

Electrochemical, gravimetric and quantum chemical analysis of mild steel corrosion inhibition by colchicine in 1 M HCl medium

Electrochemical, gravimetric and quantum chemical analysis of mild steel corrosion inhibition by colchicine in 1 M HCl medium

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

The inhibition of carbon-steel corrosion in seawater by streptomycin and tetracycline antibiotics: An experimental and theoretical study

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