Inhibition of Acid Corrosion of Mild Steel Using &lt;i&gt;Delonix regia &lt;/i&gt;Leaves Extract

Chidiebere, Maduabuchi A.; Nnanna, Lebe A.; Blessing, Adindu C.; Oguzie, Kanayo L.; Beluonwu, Okolue; Benedict, Onyeachu; Oguzie, Emeka E.

doi:10.18052/www.scipress.com/ilcpa.69.74

Cited by 11 publications

(2 citation statements)

References 32 publications

(22 reference statements)

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“…If the displacement in E corr is above 85 mV we could classify the inhibitor as anodic or cathodic and if the displacement is below 85 mV the inhibitor may be seen as a mixed-mode. 29 The corresponding electrochemical parameters namely, corrosion potential (E corr ) and corrosion current density (I corr ) were generated and their values are presented in Table 6. The maximum displacement in E corr value are less than 85 mV, bitter kola leaf extract behaved as a mixed-mode inhibitor.…”

Section: Polarization Measurementsmentioning

confidence: 99%

Optimization and Electrochemical Study on the Control of Mild Steel Corrosion in Hydrochloric Acid Solution with Bitter Kola Leaf Extract as Inhibitor

et al. 2018

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Response surface methodology was applied to predict the optimum control of mild steel corrosion in acid medium with bitter kola leaf extract as inhibitor. The experiment was carried out to investigate the mutual interactions between the considered independent variables and the expected responses. Thermometric, gravimetric, potentiodynamics polarization and electrochemical impedance spectroscopy were used in the corrosion inhibition study. As a supplementary technique, infrared spectroscopy was used to analyze the pure extract and corrosion products and it was observed that some peaks shifted while some disappeared. Inhibition efficiencies of 88.24 %, 86.81 %, 90 %, 89.5 % and 85.3 % were obtained from optimization, thermometric, gravimetric, potentiodynamics polarization and electrochemical impedance spectroscopic techniques, respectively. The bitter kola leaf extract behaved as a mixed-mode inhibitor. Application of response surface methodology in this study was found to be good in predicting the optimum range for controlling of metal corrosion thereby reducing the number of experimental runs.

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Section: Polarization Measurementsmentioning

confidence: 99%

Optimization and Electrochemical Study on the Control of Mild Steel Corrosion in Hydrochloric Acid Solution with Bitter Kola Leaf Extract as Inhibitor

et al. 2018

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“…The ability of organic compounds to act as corrosion inhibitors involve the use of heteroatoms like nitrogen, oxygen, sulfur or phosphorus in the molecule for adsorption on the metal surface to form an inert barrier so that active sites on the metal surface are isolated from the aqueous solution [73][74][75][76]. In this way, the rates of anodic and cathodic reactions at the metal-solution interface, at E OCP , are generally impeded.…”

Section: Evaluation Of Organic Inhibitors For Acid Corrosionmentioning

confidence: 99%

Electrochemical noise (EN) technique: review of recent practical applications to corrosion electrochemistry research

Obot

Onyeachu

Zeino

et al. 2019

Journal of Adhesion Science and Technology

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The ability to analyze different electrochemical corrosion phenomena, in-situ, without requiring any form of electrode perturbation has strongly attracted the attention of corrosion researchers towards the application of electrochemical noise (EN) analysis method. With the ability to analyze stochastic and chaotic electrode potential and current fluctuations at E OCP , the EN analysis method is capable of providing information about the kinetics and mechanism of metallic corrosion with accuracy that can match conventional electrochemical techniques. Herein, we review the recent applications of EN analysis method to electrochemical corrosion research. We discuss briefly the theory behind the measurement of EN, and then highlight some of its application in the evaluation of corrosion inhibitors, pitting corrosion, coatings on metals, microbiologically-induced corrosion, as well as CO 2-corrosion. The drawbacks of the EN analysis method have also been highlighted and future considerations on the use of this important electrochemical technique have also been proposed.

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Sodium alginate: A promising biopolymer for corrosion protection of API X60 high strength carbon steel in saline medium

Obot

Onyeachu

Kumar

2017

Carbohydrate Polymers

136

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Inhibition of Acid Corrosion of Mild Steel Using <i>Delonix regia </i>Leaves Extract

Cited by 11 publications

References 32 publications

Optimization and Electrochemical Study on the Control of Mild Steel Corrosion in Hydrochloric Acid Solution with Bitter Kola Leaf Extract as Inhibitor

Optimization and Electrochemical Study on the Control of Mild Steel Corrosion in Hydrochloric Acid Solution with Bitter Kola Leaf Extract as Inhibitor

Electrochemical noise (EN) technique: review of recent practical applications to corrosion electrochemistry research

Sodium alginate: A promising biopolymer for corrosion protection of API X60 high strength carbon steel in saline medium

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