An investigation of mild carbon steel corrosion inhibition in hydrochloric acid medium by environment friendly green inhibitors

Gopiraman, Mayakrishnan; Pitchai, Sakunthala; Devarayan, Kesavan; Alexramani, V.; Kim, I. S.; Srinivasan, Naveen

doi:10.1007/s11998-011-9374-6

Cited by 57 publications

(34 citation statements)

References 25 publications

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“…2 Among these methods, the use of chemical corrosion inhibitors is usually the most suitable, practical and economical approach to accomplish this goal. [9][10][11] The extracts of various plants and their parts (leaves, fruits, roots, etc.) 4,5 However, most of them are expensive and extremely toxic to human being and the environment.…”

Section: Introductionmentioning

confidence: 99%

“…3 Several synthetic molecules have been reported as valuable corrosion inhibitors for metals. [12][13][14][15] For example, the reported plant extracts with promising corrosion inhibitive properties include Zanthoxylum alatum, 9 Phyllanthus amarus, 13 Uncaria gambir, 10 Strychnos nux-vomica, 16 Murraya koenigii, 7 Schinopsis lorentzii, 17 Phragmites australis, 14 Brugmansia suaveolens, Cassia roxburghii, 11 Polycarpaea corymbosa and Desmodium triorum. The toxicity of synthetic compounds and uncompromising environmental directives have led to the use of natural products as safe and effective green corrosion inhibitors.…”

Section: Introductionmentioning

confidence: 99%

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Anticorrosive assay-guided isolation of active phytoconstituents from Anthemis pseudocotula extracts and a detailed study of their effects on the corrosion of mild steel in acidic media

et al. 2015

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In this study, anticorrosive properties of various extracts (methanolic, aqueous methanolic and water extracts) of Anthemis pseudocotula for mild steel in 1.0 M HCl media is screened for the first time. Among the various tested extracts, the methanolic extract of A. pseudocotula shows the highest corrosion inhibition activity. Anticorrosive assay-guided isolation of this methanolic extract results in the isolation of a highly potent anticorrosive compound, APB (luteolin-7-O-b-D-glucoside). The anticorrosive effects of APB on mild steel in 1.0 M HCl media were evaluated in detail using gravimetric, Tafel plots, linear polarization, electrochemical impedance spectroscopy and SEM and EDS techniques. Tafel plots reveal that APB acts as a mixed-type inhibitor. The adsorption behaviour of this green inhibitor on the mild-steel surface obeys the Langmuir adsorption isotherm. A surface morphology study through SEM and EDS analysis displays a noteworthy upgraded surface morphology of the mild steel plate in the presence of the green inhibitor in 1.0 M HCl media. The results obtained from electrochemical tests and weight loss measurements are in good agreement which shows excellent inhibition efficiency for the natural compound APB.Fig. 11 EDS of (a) polished mild-steel coupon, (b) mild-steel coupon in 1.0 M HCl and (c) mild-steel coupon with 0.446 mM of APB in 1.0 M HCl.This journal is

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Anticorrosive assay-guided isolation of active phytoconstituents from Anthemis pseudocotula extracts and a detailed study of their effects on the corrosion of mild steel in acidic media

et al. 2015

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“…Acid solutions, widely used in industrial acid cleaning, acid descaling, acid pickling and oil well acidizing, require the use of corrosion inhibitors in order to restrain their corrosion attack on metallic materials [1][2][3][4].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of anticorrosion properties of Chrysophyllum albidum leaves extract for mild steel protection in acidic media

Akalezi

Oguzie

2015

Int J Ind Chem

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Background The inhibition efficiency of Chrysophyllum albidum extract in controlling corrosion of mild steel in 1 M HCl has been evaluated by weight loss, potentiodynamic polarization and electrochemical impedance techniques at 303 K. The effect of immersion time and temperature on inhibition efficiency of the extract was also studied. Results Inhibition was found to increase with increasing concentration of the extract but decrease with increasing time and temperature. Data from electrochemical measurements suggest that the extract functioned by adsorption of the organic matter on the metal/corrodent interface, inhibiting both the anodic and cathodic half reactions of the corrosion process. The increase in concentration of the inhibitor causes an increase in the activation energy and a decrease in the exponential factor k. Conclusion The plant extracts follow Langmuir adsorption isotherm. Moreover, the process of adsorption is spontaneous, stable and considered to be physical adsorption. The thermodynamic properties recorded suggest that the process of film formation is higher than the destruction of the metal surface and that the adsorption process is exothermic.

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“…Many types of compounds [2][3][4][5][6][7][8][9][10][11][12][13] such as drugs [2][3][4][5][6][7][8][9], plant extracts [10,13] and polymers [11,12] have been reported as efficient corrosion inhibitors that can contribute to the formation of protective layers on the carbon steel/stainless steel surfaces. The use of expired drugs in other activity fields could lead to the reduction of their disposal/destroying costs.…”

Section: Introductionmentioning

confidence: 99%

Inhibitory Properties of Neomycin Thin Film Formed on Carbon Steel in Sulfuric Acid Solution. Electrochemical and AFM Investigation

Samide¹,

Iacobescu²,

Tutunaru³

et al. 2017

Preprint

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Our study aims to implement a strategy to reduce the carbon steel corrosion rate in sulfuric acid solution, using an expired drug with adsorption affinity on the metal surface. To investigate the corrosion protection efficiency of an environmental friendly inhibitor, namely neomycin sulfate (NMS), the electrochemical measurements were applied on carbon steel immersed in 1.0 M H2SO4 solution with and without NMS. The protective layer formed on the steel surface was studied by atomic force microscopy (AFM). The potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) showed that the presence of the neomycin sulfate in acid solution leads to the decrease in corrosion current density (icorr) and the increase of polarization resistance (Rp). The mixed mechanism between physical and chemical adsorption of NMS molecules on the steel surface was proposed according to the Langmuir adsorption isotherm. The Atomic Force Microscopy (AFM) indicated that the NMS molecules contributed to a protective layer formation by their adsorption on the steel surface. The AFM parameters such as: rootmean-square roughness (Rq); average roughness (Ra) and maximum peak to valley height (Rp-v) revealed that in the presence of NMS a smoother surface of carbon steel was obtained, compared to the steel surface corroded in sulfuric acid blank solution.

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An investigation of mild carbon steel corrosion inhibition in hydrochloric acid medium by environment friendly green inhibitors

Cited by 57 publications

References 25 publications

Anticorrosive assay-guided isolation of active phytoconstituents from Anthemis pseudocotula extracts and a detailed study of their effects on the corrosion of mild steel in acidic media

Anticorrosive assay-guided isolation of active phytoconstituents from Anthemis pseudocotula extracts and a detailed study of their effects on the corrosion of mild steel in acidic media

Evaluation of anticorrosion properties of Chrysophyllum albidum leaves extract for mild steel protection in acidic media

Inhibitory Properties of Neomycin Thin Film Formed on Carbon Steel in Sulfuric Acid Solution. Electrochemical and AFM Investigation

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