A comprehensive study on crude methanolic extract of Artemisia pallens (Asteraceae) and its active component as effective corrosion inhibitors of mild steel in acid solution

Garai, Subhadra; Jaisankar, Parasuraman; Singh, Jitendra Kumar; Elango, Adirajan

doi:10.1016/j.corsci.2012.03.036

Cited by 230 publications

(95 citation statements)

References 54 publications

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“…Regarding the determined inhibiting efficiency, that for BTAH is in accordance with published results 6 , whereas for the cocoa bark extract no data is available in the literature for acidic media. However, as already stressed in the introduction, the IE achieved with the cocoa bark extract is similar to those reported for natural inhibitors obtained from plants extracts [13][14][15][16][17][18] .…”

Section: Fourier Transformed Infrared Spectroscopy (Ftir)supporting

confidence: 57%

Study and Assessment of the Efficiency of the Cocoa Bark Extracted from the Theobroma Cacao as an Inhibitor of the Corrosion of Carbon Steel in Substitution of Benzotriazole

et al. 2017

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Corrosion represents high losses to the economy, therefore, researches on the minimization of its damages in materials, mainly the metallic ones, are necessary. Among the various alternatives of protection against corrosion, there is the application of corrosion inhibitors that can minimize or even stop the corrosive process of metallic materials. However, at present, substances usually used as corrosion inhibitors present high toxicity, being considered harmful components to the environment and to human health. Therefore, there is an urgent need for studies on viable corrosion inhibitors, by considering not only economic but also environmental costs. The present work studied the use of cocoa bark extract (Theobrama cacao L), for possible replacement of benzotriazole (BTAH) in the corrosion inhibition of ASTM 1020 carbon steel (CS-ASTM 1020) in 18.23 g.L -1 hydrochloric acid media. Weight loss measurements, anodic and cathodic potentiodynamic polarization curves and electrochemical impedance experiments were carried out. The results showed that the addition of the extract to the electrolyte effectively hinder the corrosion process and indicated its adsorption on the electrode surface. In addition, the inhibiting efficiency of the cocoa bark extract was only slightly inferior to BTAH, showing that it can be an environmentally friendly option to toxic inhibitors.

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Section: Fourier Transformed Infrared Spectroscopy (Ftir)supporting

confidence: 57%

Study and Assessment of the Efficiency of the Cocoa Bark Extracted from the Theobroma Cacao as an Inhibitor of the Corrosion of Carbon Steel in Substitution of Benzotriazole

et al. 2017

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“…That thin protective layer is shown by the presence of Fe-CHO peak at angle 2 = 42.267 that was related to (1 1 1) [59]. Inhibitor molecules adsorb on the 304SS surface and replace water molecules by transforming to higher stable iron-inhibitor complex [59]. The formation of this complex has also been confirmed by EIS.…”

Section: Mechanism Of Corrosion Inhibitionsupporting

confidence: 48%

“…That Cr 2 O 3 passive layer is changed by a thin protective layer as the result of inhibitor molecule adsorption on the 304SS surface. That thin protective layer is shown by the presence of Fe-CHO peak at angle 2 = 42.267 that was related to (1 1 1) [59]. Inhibitor molecules adsorb on the 304SS surface and replace water molecules by transforming to higher stable iron-inhibitor complex [59].…”

Section: Mechanism Of Corrosion Inhibitionmentioning

confidence: 99%

“…The result of X-ray diffraction (XRD) on Figure 8 shows the presence of Fe 2 O 3 and Cr 2 O 3 , in testing solution either without or with inhibitor addition. There was a smooth surface on metal surface to prevent the corrosion of 304SS through adsorption of the inhibitors on metal surface [23,59]. At solution without inhibitor, actually the 304SS has passive layer (in the form of Cr 2 O 3 which contains Ni) that directly contacts with the solution and caused concentration of Cr 3+ and Ni 2+ ions to increase.…”

Section: Mechanism Of Corrosion Inhibitionmentioning

confidence: 99%

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Bee Wax Propolis Extract as Eco-Friendly Corrosion Inhibitors for 304SS in Sulfuric Acid

Sanjay

Soenoko

Suprapto

et al. 2015

International Journal of Corrosion

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The inhibition properties of bee wax propolis (BWP) extract on the 304SS in 0.5 M sulfuric acid were conducted using potentiodynamic polarization, EIS, and XRD. Quercetin (2-(3.4-dihydroxy phenyl)-3.5.7-trihydroxy-4H-chromen-4-one) was identified as the main compound in the BWP extract based on FTIR and HPLC analysis. The results showed that the inhibitor could retard the corrosion rate of 304SS in 0.5 M sulfuric acid which reached 97.29% and 91.42% at 2000 ppm based on potentiodynamic polarization and EIS measurement, respectively. The inhibition efficiency decreased with increasing temperature. The inhibition mechanism of BWP extract on the 304SS was physisorption and obeyed Temkin adsorption isotherm equation. The thin protective layer on the 304SS surface was confirmed by XRD.

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“…The peak at 287.0 eV is attributed to the carbon atom of the C-O bond. 36 The peak at 288.5 eV is not clarified, and sodium gluconate powder was therefore analyzed to identify the peak at 288.5 eV in Fig. 4.…”

Section: Surface Analysismentioning

confidence: 99%

Inhibition Ability of Gluconates for Fresh Water Corrosion of Mild Steel Enhanced by Metal Cations

Otani

Islam

Sakairi

2017

J. Electrochem. Soc.

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Inhibition ability of gluconates for fresh water corrosion of mild steel changed with metal cations were investigated by immersion tests and electrochemical impedance spectroscopy (EIS) tests. The results of the tests showed that the inhibition ability of gluconates was enhanced by metal cations that have large "corrosion inhibitory effect of cation, Y", in model fresh water. Surface analysis showed that gluconate ligands and metal cations that have large Y can bond on mild steel and that they form a protective film on the steel. EIS analysis with an equivalent circuit suggested that metal cations that have large Y would reduce the area of defects in the protective film of gluconates.

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A comprehensive study on crude methanolic extract of Artemisia pallens (Asteraceae) and its active component as effective corrosion inhibitors of mild steel in acid solution

Cited by 230 publications

References 54 publications

Study and Assessment of the Efficiency of the Cocoa Bark Extracted from the Theobroma Cacao as an Inhibitor of the Corrosion of Carbon Steel in Substitution of Benzotriazole

Study and Assessment of the Efficiency of the Cocoa Bark Extracted from the Theobroma Cacao as an Inhibitor of the Corrosion of Carbon Steel in Substitution of Benzotriazole

Bee Wax Propolis Extract as Eco-Friendly Corrosion Inhibitors for 304SS in Sulfuric Acid

Inhibition Ability of Gluconates for Fresh Water Corrosion of Mild Steel Enhanced by Metal Cations

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