Corrosion Of Steel In Acid Medium Research Articles

Experimental and computational studies of novel cyclic ammonium based ionic liquids as corrosion inhibitors for carbon steel in acid medium

The challenge of corrosion posed as a result of acidic sittings is considered as a major industrial concern, wherein ionic liquids serve as crucial in addressing the corrosive impacts on metals. In this study, five selected cyclic ammonium based ionic liquids were synthesized; IL-1MPyrBr, IL-1MPipBr, IL-2PyBr, IL-3MPyBr and IL-4MPyBr and their chemical structures were characterized using a variety of spectroscopic techniques (FT-IR, IH-NMR, 13C-NMR, Elemental analysis and thermal gravimetric analysis (TGA). Their corrosion inhibition efficiency was studied on carbon steel in 1 M HCl via different concentrations at 298 K using chemical and electrochemical parameters (PDP and EIS). DFT quantum parameters were computed, and the noted results were in complete compatible with the experimental. The synthesized ILs recorded excellent inhibition on the carbon steel corrosion in acidic media with increasing efficiency by increasing the inhibitor concentrations from 20 to 100 ppm. Different cations in the synthesized ILs affect the anti-corrosion effect and IL-3MPyBr showed the highest inhibition (ηR); 96.12% using the lowest concentration. Kinetic and thermodynamic considerations were studied and illustrated.

An environmentally sustainable approach for the utilization of Erigeron bonariensis as a green inhibitor against weathering steel corrosion in acidic media.

In the realm of corrosion mitigation, the search for sustainable and ecologically accountable inhibitors attracts significant interest from the environmental point of view. This study investigates the intriguing possibilities presented by Erigeron bonariensis (EB) as a green and innovative corrosion inhibitor for weathering steel in 1 M H2SO4. EB, a naturally abundant plant species, holds promise as a green and sustainable inhibitor due to its inherent chemical composition in the environment. The intricate interplay between the phytochemical constituents of the extract and the corrosive environment is meticulously deciphered. Furthermore, the environmentally benign nature of the inhibitor adds an extra layer of significance to its application, aligning with contemporary green chemistry principles. The inhibition effect of Erigeron bonariensis (EB) extract on the corrosion of mild steel in acidic media (H2SO4) was studied using weight loss, absorption studies, phytochemical analysis, electrochemical methods, and scanning electron microscopy. The experimental findings revealed that an increase in inhibitor concentration is correlated with higher inhibition efficiency. The adsorption of inhibitor molecules on the mild steel surface was found to agree with the UV-Vis adsorption spectrum. Additionally, a surface study conducted using scanning electron microscopy indicated notable differences in the presence and absence of inhibitors for weathering steel. At 2000 mg L-1, EB extract has the best inhibitory efficiency for weathering steel in 1 M H2SO4 of 99.50% by the leaf part, followed by 94.35% by the flower part, and 85.22% by the stem part. Overall, this study suggests that EB extract serves as a promising alternative for corrosion prevention, demonstrating significant inhibition efficiency.

The inhibitory effect of certain imidazole derivatives grafted on 8-hydroxyqinoline on carbon steel corrosion in acidic medium: experimental and computational approaches

The inhibitory effect of certain imidazole derivatives grafted on 8-hydroxyqinoline on carbon steel corrosion in acidic medium: experimental and computational approaches

Evaluation of adsorption and inhibitive properties of Capparis spinoza leaves extract on high carbon steel corrosion in acidic media

Evaluation of adsorption and inhibitive properties of Capparis spinoza leaves extract on high carbon steel corrosion in acidic media

Efficient inhibition of mild steel corrosion in acidic medium by novel pyrimidine derivatives: Inhibitive effect evaluation and interface adsorption mechanism

In the pickling, oil well acidification, and other industrial processes, mild steel would suffer from severe corrosion in the acidic environment. In this work, two novel pyrimidine derivatives, 2-Benzylthio-6-methylpyrimidin-4(3H)-one (BMPO) and 4-Benzyloxy-2-benzylthio-6-methylpyrimidine (BBMP), were synthesized through nucleophilic substitution reaction, and used as eco-friendly corrosion inhibitors for mild steel in HCl medium. The corrosion inhibition properties of BMPO and BBMP were investigated using electrochemical tests, surface analyses, and theoretical calculations. The experimental results indicate that BMPO and BBMP have superior inhibition effect, with high inhibition efficiency (99.28% and 99.69% at 0.6 mM) and good corrosion inhibition stability. Theoretical calculations reveal that the interface adsorption of BMPO and BBMP is achieved by the bonding of N, S, O atoms and the benzene ring to steel surface. The protonation of BMPO and BBMP molecules could further promote their adsorption. Compared to BMPO, the modification with more benzyl groups lowers the polarity and increases the hydrophobicity of BBMP. Then BBMP molecules could adsorb on steel surface to create a hydrophobic film with a large coverage, which accounts for the better corrosion inhibition effect of BBMP.

Preparation, Characterization, and Inhibition Effect of Novel Nonionic Gemini Surfactants Based on Sebacic Acid against Carbon Steel Corrosion in Acidic Medium

Preparation, Characterization, and Inhibition Effect of Novel Nonionic Gemini Surfactants Based on Sebacic Acid against Carbon Steel Corrosion in Acidic Medium

Nonlinear dynamics of ascorbic acid‐KI interaction on carbon steel corrosion in acid medium

AbstractAscorbic acid (AA) has been reported as a corrosion inhibitor of carbon steel. The combined effect of AA and potassium iodide (KI) in the dynamics of the corrosion process of 1018 carbon steel is studied by electrochemical impedance spectroscopy (EIS) and electrochemical noise (EN) in an acid medium. EN data were used for nonlinear analysis by means of recurrence plots and their corresponding parameters, as well as by delay maps. Important information about the corrosion process of carbon steel corrosion in the presence of these two substances was obtained. AA does not behave as an inhibitor in this system, but the influence of KI is significant in inhibitor efficiency. The dynamics is established mainly by the adsorption of the I− ions on the steel surface and confirmed by the information entropy. The action of AA is to increase the degree of chaos when concentration increases. A relevant aspect determined is the relationship between the nonlinear dynamics of a corrosion process and its intensity.

Recent Developments in Application of Plants Oils and Extract as Corrosion Inhibitors for Steel Corrosion in Acid Media

Recent Developments in Application of Plants Oils and Extract as Corrosion Inhibitors for Steel Corrosion in Acid Media

N-doped and Cu,N-doped carbon dots as corrosion inhibitor for mild steel corrosion in acid medium

In the present study, N-doped carbon dots (N-CDs) and Cu,N-doped carbon dots (Cu,N-CDs) with various Cu doping amounts were explored as corrosion inhibitors for mild steel substrate. Material characterizations of synthesized materials were performed using UV-Vis, FTIR and XRD, TEM and XPS techniques. Electrochemical corrosion testing showed enhanced corrosion inhibition performance for Cu,N-CDs relative to N-CDs. The inhibition efficiencies were directly proportional to concentrations of N-CDs and Cu,N-CDs, with more than 97% achieved at 100 ppm of Cu,N-CDs. Gravimetric measurements at temperatures ranging from 40 to 70 ℃ revealed a slight increase in inhibition efficiencies from 99.5 % to 99.7 % for higher Cu doped Cu,N-CDs. Protective nature of N-CDs and Cu,N-CDs was accredited to physicochemical adsorption and inhibitor film formation. In addition, the growth of an electroless like Cu deposit on the mild steel surface contributed to better inhibition performances of Cu,N-CDs. The inhibition mechanism was supported by surface characterization of inhibited steel substrate.

Effect of selected 3-chloromethylcoumarin derivatives on mild steel corrosion in acidic medium: experimental and computational studies

Two 3-chloromethylcoumarins synthesized via the Baylis-Hillman reaction have been investigated for their ability to inhibit corrosion of mild steel in 2.0 M HCl. The inhibition efficiency was evaluated by gravimetric and electrochemical methods. Inhibition efficiency was found to increase with increase in concentration of the 3-chloromethylcoumarins. Kinetics, thermodynamics and adsorption equilibrium of the corrosion of steel in the acid and acid-containing 3-chloromethylcoumarins media were investigated. The results showed that the inhibitive actions of the compounds occurred as a result of adsorption of 3-chloromethylcoumarins molecules on mild steel surface. 3-Chloromethyl-8-ethoxycoumarin 4a showed higher inhibition efficiencies than 6-chloro-3-chloromethylcoumarin 4b, especially at low concentrations and temperatures. Physical adsorption was predicted based on decreasing surface coverage of the inhibitor molecules with increase in temperature. The studied 3-chloromethylcoumarins behaved as mixed-type corrosion inhibitors for mild steel in 2 M HCl. The higher electron-donating ability and lower energy gap of 4a compared to 4b, as derived from computational studies suggest that 4a has higher potentials to inhibit steel corrosion in HCl than 4b. Similar trend was reflected in the Monte Carlo simulations adsorption energies.

Elektrokimyasal İnceleme ve DFT Yaklaşımı: 2-izopropil-4-metil-1,3-tiyazol-5-karboksilik asidin Yumuşak Çeliğin Korozyonuna Karşı İnhibisyon Etkisi

In this study, the inhibitory properties of 2-isopropyl-4-methyl-1,3-thiazole-5-carboxylic acid (2I4MTA5C) against mild steel corrosion in acidic medium were investigated by electrochemical and quantum theoretical methods. Electrochemical impedance spectroscopy measurements and polarization curves were obtained in the presence and absence of 5 mM 2I4MTA5C in 0.5 M HCl during 168 hours of immersion, and the adsorption isotherm is presented. Experimental results were compared with quantum theoretical parameters in order to establish a relationship between molecular structure and electrochemical behavior and to investigate it in depth. According to the results obtained for the 168 hour immersion time, the resistance values for MS were 9.8 in the absence of 5 mM 2I4MTA5C and 200 ohm.cm-2 in the presence. The calculated corrosion current density values were 2.65 and 0.13 mA.cm-2 for MS in HCl and 5 mM 2I4MTA5C + HCl solution, respectively. The theoretically calculated HOMO and LUMO values were -6.88 eV and -1.80 eV. According to the results obtained, we can say that 2I4MTA5C is a suitable inhibitor candidate with 95.1% protection against mild steel corrosion.

Experimental, DFT and MD evaluation of Nandina domestica Thunb. extract as green inhibitor for carbon steel corrosion in acidic medium

Plant extracts with the advantages of environment–friendly, renewable and rich resources, can be used as promising corrosion inhibitors in pickling or descaling processes. In this study, the inhibition performance and inhibition mechanism of Nandina domestica Thunb. extract (NDTE) for carbon steel in HCl solution was evaluated by electrochemical experiments, component analysis, surface characterization and theoretical calculations. The results show that NDTE can significantly inhibit the corrosion of carbon steel in HCl solution, and its maximum corrosion inhibition efficiency can reach 96.0% at 298 K. In addition, NDTE still exhibited excellent corrosion inhibition performance at 328 K, with a 93.5% corrosion inhibition efficiency. The Tafel results indicate that NDTE is a mixed–type inhibitor, and its adsorption on the surface of carbon steel conforms to the Langmuir isotherm model. Surface characterization shows that NDTE has attractive inhibition performance for carbon steel over a wide temperature range. In addition, the inhibition mechanism of NDTE were studied by quantum chemical calculations and molecular dynamics simulation. This work provides a useful insight into the anti–corrosion of carbon steel during industrial pickling or descaling processes.

Inhibition of Mild Steel Corrosion in Acidic Media Using Palmyra Palm Peduncle Extract: Experimental and Theoretical Investigation

Utilizing gravimetric and electrochemical measurement techniques, the effective performance of inhibitive and adsorption properties of aqueous extract obtained from destructive distillation of palmyra palm (Borassus flabellifer Linn.) peduncle (BFP) for the corrosion of mild steel (MS) in 0.5 M H2SO4 and 1 M HCl were investigated. From the experimental results, an aqueous extract of BFP was found to be a good adsorption inhibitor for the corrosion of MS in 0.5 M H2SO4 and 1 M HCl solutions. The inhibition potentials of the aqueous extract of the palmyra palm peduncle are enhanced by its phytochemical constituents. The density functional theory was utilized to examine the BFP extract/mild steel surface mechanism's properties and to describe the inhibitor's structural nature on the corrosion process. The surface morphological alterations of metal specimens in both inhibited and uninhibited solutions were studied using scanning electron microscopy (SEM). Fourier transform infrared (FT-IR) spectroscopy was used to validate the presence of phenolic components in the BFP extract.

Inhibition mechanism of mild steel corrosion in acidic media by some amine compounds

Inhibition mechanism of mild steel corrosion in acidic media by some amine compounds

Development of New Pyrimidine Derivative Inhibitor for Mild Steel Corrosion in Acid Medium

Development of New Pyrimidine Derivative Inhibitor for Mild Steel Corrosion in Acid Medium

Naturally Occurring Exudates Gums as Ecofriendly Inhibitors for Mild Steel Corrosion in Acidic Medium

The corrosion inhibition potentials of gum exudates from Daniella oliveri (DO) and Commiphora Africana (CA) for the corrosion of mild steel in H2 SO4 have been studied using weight loss and thermometric methods at 303 and 333K. Results show that the exudates gum actually reduced the rates of corrosion of mild steel. Increase in the concentrations of the exudate’s gums increased their percentage inhibition efficiencies. Corrosion rate was found to increase with increase in temperature in the presence and absence of the gum exudates, though the corrosion rate was slower in the presence of the exudates gums. Both DO and CA exudates gums were found to obey Temkin and Langmuir adsorption models at all concentrations and temperatures studied. Physical adsorption mechanism was proposed from the adsorption parameters. Kinetic and thermodynamic parameters revealed that the adsorption process is spontaneous, exothermic and no significant difference was found between the inhibition efficiencies of DO and CA.

Development of ecofriendly high performance anti-corrosive chitosan nanocomposite material for mild steel corrosion in acid medium

Development of ecofriendly high performance anti-corrosive chitosan nanocomposite material for mild steel corrosion in acid medium

Synergistic effects of aminotris(methylene phosphonic acid) and Zn2+ on the carbon steel corrosion in acid media: An experimental and theoretical approach

Synergistic effects of aminotris(methylene phosphonic acid) and Zn2+ on the carbon steel corrosion in acid media: An experimental and theoretical approach

Adsorption and Inhibitory Properties of Buchholzia coriacea Seed Extracts on Mild Steel Corrosion in Acidic Media

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Inhibition Effect of Thiourea Derivative for Mild Steel Corrosion in Acid Medium: Experimental and Theoretical Studies

The corrosion inhibition efficiency of thiourea derivative 1-[morpholin-4-yl(phenyl)methyl]thiourea (MPMT) for mild steel in 0.5 M HCl was studied at temperatures 303 K, 313 K, 323 K, and 333 K using experimental techniques like potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) measurements and density functional theory technique. The results suggest that thiourea derivative is an excellent corrosion inhibitor for mild steel. The study of inhibition efficiency of the inhibitor at various temperatures revealed that efficiency of the inhibitor increased up to 323 K and at 333 K inhibition efficiency decreased due to desorption of the inhibitor. The inhibitor MPMT shows maximum corrosion inhibition efficiency of 91.08% and 91.2% in 1000 ppm concentration at 323 K according to PDP and EIS measurement, respectively. PDP measurements showed that MPMT acts as a mixed-type inhibitor involving both physisorption and chemisorption. This is also supported by the standard free energy of adsorption values (− 31.14 to − 36.68 kJ mol−1). The adsorption of MPMT on to the MS surface is obeyed by Langmuir adsorption isotherm at all temperatures. The regression values (R2) obtained from the adsorption isotherm plot are near to unity. The surface morphology of the uninhibited and inhibited mild steel samples was analyzed using the scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), and UV–Visible spectroscopy. The fraction of electron transfer ∆N value obtained from the theoretical study is 0.5417, indicating the higher ability of the inhibitor molecule to donate electrons to the metal surface. The results obtained from quantum chemical analysis well correlated with the experimental studies.