Corrosion protection of mild steel by a new binary inhibitor system in hydrochloric acid solution

Thirumalairaj, Brindha; Jaganathan, Mallika

doi:10.1016/j.ejpe.2015.09.002

Cited by 30 publications

(12 citation statements)

References 26 publications

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“…Thus, in the examined conditions, initially CBTAH is adsorbed on the copper surface followed by adsorption of PS molecules. Similar results are observed in literature dealing with relevant topic [49,50].…”

Section: Homosupporting

confidence: 91%

5-chloro-1H-benzotriazole and potassium sorbate as binary corrosion inhibitor of copper in acidic solution

Tasić¹,

Petrović-Mihajlović²,

Radovanović³

et al. 2018

Zaštita materijala

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Section: Homosupporting

confidence: 91%

5-chloro-1H-benzotriazole and potassium sorbate as binary corrosion inhibitor of copper in acidic solution

Tasić¹,

Petrović-Mihajlović²,

Radovanović³

et al. 2018

Zaštita materijala

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“…Although corrosion cannot be terminated, anodic/cathodic protection, galvanizing, painting, oiling and the use of corrosion inhibitors are some measures that have proven to be successful in retarding the rate of corrosion of metals [1][2][3][4]. Of significant interest is the use of corrosion inhibitors, which are compounds that retard the rate of corrosion, when added in minute concentration [5]. Progressive trends in the application of corrosion inhibitors to protect industrial fabrications exposed to aggressive medium have led to the development on the use of green corrosion inhibitors, which are less toxic, eco-friendly, cost-effective and biodegradable [6].…”

Section: Introductionmentioning

confidence: 99%

Experimental and computational chemistry studies on the inhibition of aluminium and mild steel in 0.1 M HCl by 3-nitrobenzoic acid

Eddy

Ameh

Essien

2018

Journal of Taibah University for Science

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The effectiveness of 3-nitrobenzoic acid towards the inhibition of the corrosion of mild steel and aluminium in solution of HCl was investigated using theoretical and experimental methods (weight loss, thermometric, polarization, FTIR and SEM techniques). Inhibition efficiency of 3-nitrobenzoic acid, evaluated from weight loss technique ranged from 71% to 90% and from 71% to 82% for mild steel and aluminium, respectively. Results from linear polarization and potentiodynamic studies were comparable to weight loss results. Calculated kinetic (activation energy), thermodynamic (changes in entropy and enthalpy) and adsorption parameters indicated that the adsorption of the inhibitor on the surface of the respective metal is accompanied by molecular association and is endothermic, spontaneous and favoured the mechanism of physical adsorption. Best-fitted adsorption isotherms were Langmuir and Frumkin models, which gave evidences for the existence of interaction, characterized by attractive behaviour of the inhibitor on both mild steel and aluminium surfaces. Scanning electron micrographs of the metal before and after inhibition clearly revealed that the inhibitor prevented crevice and pitting corrosion by forming adsorbed protective layer on the respective metal surface. FTIR spectra of the inhibitor and the corrosion products indicated the formation of new bond, existence of interaction between the inhibitor molecules and the involvement of some functional groups in the adsorption and inhibition processes. Quantum chemical study revealed that the inhibitor is adsorbed on the metal surface through the nitro functional group in the ring. Calculated semi empirical parameters were comparable to those reported for excellent corrosion inhibitors.

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“…Due to prolonged usage of these equipments scales of carbonate and rust accumulates at the exterior surface. [1,2] For removal of scales and rust these equipments often exposed to strong acids such as HCl, H 2 SO 4 , phosphoric acid and HF solution. Among these HCl and H 2 SO 4 are commonly used.…”

Section: Introductionmentioning

confidence: 99%

Carbon Dots as Green Corrosion Inhibitor for Mild Steel in HCl Solution

Saraswat

Yadav

2020

ChemistrySelect

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Two carbon dots namely, S, N co-doped (CD1) and N doped (CD2) were synthesized by solvothermal treatment of pyromelletic acid in presence of thiourea, urea and DETA at 180°C. The synthesized carbon dots were characterized by Fourier Transform Infrared Spectroscopy (FTIR), Transmission electron microscopy (TEM) and Raman spectroscopy analysis. The dimension of synthesized carbon dots were found in the range of 1.63 nm to 2 nm with significant graphitic carbons. These carbon dots (CD1 and CD2) were used as green corrosion inhibitor to mitigate corrosion of mild steel (MS) in 15 % HCl solution using gravimetric and electrochemical methods. Studied carbon dots, CD1 and CD2 exhibited inhibition efficiency of 96.40 and 90.00 %, respectively, at 100 ppm concentration and 303 K temperature. The observed corrosion inhibition occurs due to adsorption of the carbon dots to the MS surface. Both the carbon dots follow Langmuir adsorption isotherm model and show physisorption on the MS surface. Atomic force microscopy (AFM) and scanning electron microscopy (SEM) analysis was used to study the morphology of the uninhibited and inhibited surface of the sample. The interaction of the carbon dots and composition of adsorbed layer on the MS surface was confirmed using X-ray photoelectron spectroscopy (XPS). The XPS analysis revealed that heteroatoms present in the structural moiety of the carbon dots efficiently binds on the MS surface.

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Corrosion protection of mild steel by a new binary inhibitor system in hydrochloric acid solution

Cited by 30 publications

References 26 publications

5-chloro-1H-benzotriazole and potassium sorbate as binary corrosion inhibitor of copper in acidic solution

5-chloro-1H-benzotriazole and potassium sorbate as binary corrosion inhibitor of copper in acidic solution

Experimental and computational chemistry studies on the inhibition of aluminium and mild steel in 0.1 M HCl by 3-nitrobenzoic acid

Carbon Dots as Green Corrosion Inhibitor for Mild Steel in HCl Solution

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