Corrosion Inhibition Of Steel Research Articles

Performance of a new pyrazole derivative in 1 M HCl on the corrosion of carbon steel: experimental, quantum chemical and molecular dynamics simulation studies

The present research demonstrates an innovative investigation of a new pyrazol derivative (2-benzoyl-4-nitro-N-[(1H-pyrazol-1-yl)methyl]aniline (BNPMA)) as an inhibitor of carbon steel corrosion in molar hydrochloric acid. A variety of methods and techniques were used in our research to assess corrosion inhibition, including weight loss measurements (WL), electrochemical trials like potentiodynamic polarization (PDP) and electrochemical impedance spectroscopy (EIS), surface analysis methods such a scanning electron microscope coupled with Energy-Dispersive X-ray Spectroscopy (SEM/EDX), UV-Visible analysis, as well as computational evaluation of BNPMA. The organic compound was confirmed to be a good anticorrosive product with a maximal inhibition efficiency (IE%) of 93.2% at 10−3 M. According to the PDP results, the inhibitor BNPMA acts as a mixed-type inhibitor. The Langmuir model seems to be followed during BNPMA's adsorption on the CS surface. According to UV-visible and scanning electron microscopy, a barrier coating was formed which prevented corrosive ions from reaching the CS surface. The outcomes of experimental approaches (WL, PDP, and EIS) have been supported by theoretical investigations.

Inhibition potential of extract of leaves of Sodom apple in the corrosion of mild steel in 1.0 M H<sub>2</sub>SO<sub>4</sub>

Corrosion inhibition of mild steel in 1.0 M sulphuric acid by extract of leaves of Sodom apple has been studied using gravimetric and surface analysis. Varying concentrations (0.5, 1.0, 1.5 and 2.0 g/mL) of the inhibitor in 1.0 M H2SO4 were prepared from residue of an ethanolic extract of the sample and were used for the corrosion inhibition study. The extracts were previously confirmed by Fourier Transform Infrared Spectroscopy and screened for phytochemicals including tannins, saponins, and cardiac glycosides. The results for anticorrosion studies showed that the highest inhibition efficiency of the extract was 89.3% at 1.5 g/mL inhibitor concentration and a temperature of 323 K. Equally, the corrosion rate of the steel was observed to decrease with increase in the concentration of the extract. Scanning electron micrographs also indicated that the extract actually slows down the rate of corrosion of the steel. The study further suggests that the corrosion inhibition mechanism of the extract on steel in 1 M H2SO4 could be modelled using Freundlich isotherm and that the inhibition was by physisorption and formation of multilayers on the steel surface.

Rosmarinus officinalis l. Oil as an Eco-Friendly corrosion inhibitor for mild steel in acidic Solution: Experimental and computational studies

In this research, Rosmarinus officinalis L. (ROL) essential oil extracted from the plant was initially introduced as a green anti-corrosion agent for mild steel (MS) in a 1 M HCl solution. The components of the extract were identified using gas chromatography-mass spectrometry (GC–MS) and UV–Vis method. Gravimetric and electrochemical techniques (EIS and PDP) demonstrated that ROL inhibited steel corrosion by 90 % at a concentration of 1.5 g/l. The PDP experiment indicated that ROL essential oil acted as a mixed-type inhibitor with a cathodic predominance. The morphological and elemental characteristics of the metal surface were examined using SEM and EDX, revealing the formation of a corrosion-resistant film on the metal surface. The inhibited corrosive solutions were characterised before and after immersing MS using UV–visible spectrophotometry, indicating the possibility of iron-ROL complex formation. Finally, theoretical calculations using DFT, MC, and MD simulations were conducted and correlated with experimental results.

Experimental and DFT studies of a novel salicylhydrazone derivative as a steel corrosion inhibitor

The inhibitory properties of a newly synthesized salicylhydrazone derivative, namely 2-hydroxybenzaldehyde {(1E)-[4-(dimethylamino)phenyl]methylene}hydrazine (HBMH), towards the corrosion of XC38 carbon steel in 1 M hydrochloric acid, has been studied using weight loss, electrochemical measurements and theoretical calculations. Gravimetric results have shown that the inhibition efficiency of this compound increases with its concentration and decreases with temperature to reach a maximum of 90% at 293 K in the presence of 10−3 M of this inhibitor. Potentiodynamic polarization measurements have revealed that this salicylhydrazone is of mixed-type since it exhibits both anodic and cathodic corrosion inhibition performance. This inhibitor adsorbs and forms a protective barrier on the metal surface by a simple geometrical blocking of the active sites of this surface. Its adsorption proceeds essentially via physisorption mode and obeys the Langmuir's isotherm model. The density functional theory (DFT) calculations revealed the HBMH’s electron donor-acceptor nature, which may facilitate its adsorption on the XC38 steel surface.

Promising Eco-friendly Inhibitor Potency: Elaeagnus Angustifolia Leaf Extract for Mild Steel

In this research, the potential of Elaeagnus angustifolia tree leaf extract as a green corrosion inhibitor for mild steel in hydrochloric acid solution was examined. The stock concentration of the aqueous extract was determined to be 0.38% (w/v). Other experimental solutions were created by diluting four different extract concentrations in aggressive solution. Experimental measurements, including linear polarization (LPR), electrochemical impedance spectroscopy (EIS), and semi-logarithmic current potential curves by Tafel extrapolation method, were employed to validate the corrosion inhibition effects of the plant leaf extract at varying concentrations. Notably, oleaster leaf extract demonstrated a corrosion protection of over 80% for mild steel, even at low concentrations, attributed to its abundance in secondary metabolites such as polyphenols and flavonoids. The atomic force microscopy (AFM) surface maps provide robust evidence for the electrochemical measurement data.

Di-imine Schiff base inhibitor for carbon steel corrosion in 1 M HCl: Electrochemical, surface and theoretical investigations

Many strategies for an efficient inhibitor preparing were proposed for metals protection against corrosion in last decades. Herein, the adsorption and inhibitory effect of aromatic di-imine Schiff base inhibitor (Ar-Sb) namely (N1-(2-(((E)− 4-(dimethylamino)benzylidene)amino)ethyl)-N2-(2-((2-((2(Z)− 4-dimethylamino)ben- zylidene)amino) ethyl) amino) ethyl) amino) ethyl)ethane-1,2-diamine) on carbon steel (CS) in 1 M HCl solution was investigated experimentally and theoretically. The electrochemical measurements (EMs) such as electrochemical impedance spectroscopy (EIS), Potentiodynamic polarization (PDP) and cyclic voltammetry (CV) techniques exhibited the anticorrosion performance of Ar-Sb. Also, the adsorption of Ar-Sb on CS surface at different temperatures and immersion times was studied using PDP and EIS which indicated formation of a protective film layer of Ar-Sb responsible for CS corrosion mitigation. Ar-Sb inhibitor provided 95.79% inhibition efficiency at 5 × 10−4 M which reflected blocking of CS active sites through the adsorption process which was studied using various adsorption isotherms. CS surface morphology was studied using scanning electron microscopy (SEM), energy dispersive X-ray (EDX) and atomic force microscope (AFM) reflecting the inhibition role of Ar-Sb in CS protection. The data obtained from PDP suggested that Ar-Sb inhibitor acted as mixed-type inhibitor. Also, quantum calculations such as density functional theory (DFT) and Monte Carlo (MCs) verified the inhibitive performance of Ar-Sb for CS surface with the experimental results.

Camphor tree bark extract as green corrosion inhibitor of LCS in 0.5 M H2SO4 with and without salt effect

AbstractThis work tested the ethanol extract of camphor tree Cinnamomum camphora bark (CTBEE) as a green corrosion inhibitor of low carbon steel (LCS) in 0.5 M H2SO4 with and without the synergistic effect of 4000 ppm NaCl or 800 ppm of KI. The corrosion protection of LCS was significantly increased in the presence of CTBEE‐KI and CBWE‐NaCl blends compared with CTBEE alone, according to data performed by electrochemical impedance spectroscopy (EIS) and electrochemical polarization (EP) analyses. The formation of a film by the blends blocks the LCS surface area, preventing corrosive gradients from reaching its surface. Inhibition efficiency (IE%) of 81% and 89% were obtained in the presence of 800 ppm CTBEE‐4000 ppm NaCl and CTBEE‐800 ppm KI, respectively, compared with IE of 65% in the presence of 800 ppm CTBEE only. A maximum IE% of 89% and 97% were reached after 72 h of immersion in the presence of CTBEE‐NaCl and CTBEE‐KI, respectively. Potentiodynamic experiments indicate that the blends act as mixed‐type inhibitors. The inhibition efficiency of CTBEE, CTBEE‐KI, and CTBEE‐NaCl remained effectively high during the testing period of immersion time, which proved the excellent stability of CTBEE in the corrosive acidic media.

A data-driven QSPR model for screening organic corrosion inhibitors for carbon steel using machine learning techniques.

Machine learning (ML) techniques have shown great potential for screening corrosion inhibitors. In this study, a data-driven quantitative structure-property relationship (QSPR) model using the gradient boosting decision tree (GB) algorithm combined with the permutation feature importance (PFI) technique was developed to predict the corrosion inhibition efficiency (IE) of organic compounds on carbon steel. The results showed that the PFI method effectively selected the molecular descriptors most relevant to the IE. Using these important molecular descriptors, an IE predictive model was trained on a dataset encompassing various categories of organic corrosion inhibitors for carbon steel, achieving RMSE, MAE, and R2 of 6.40%, 4.80%, and 0.72, respectively. The integration of GB with PFI within the ML workflow demonstrated significantly enhanced IE predictive capability compared to previously reported ML models. Subsequent assessments involved the application of the trained model to drug-based corrosion inhibitors. The model demonstrates robust predictive capability when validated on available and our own experimental results. Furthermore, the model has been employed to predict IE for more than 1500 drug compounds, suggesting five novel drug compounds with the highest predicted IE on carbon steel. The developed ML workflow and associated model will be useful in accelerating the development of next-generation corrosion inhibitors for carbon steel.

Исследование эффективности применения электрохимического модуля генерации ферратов при очистке сточных вод мясоперерабатывающих предприятий

The article describes the complex electrochemical technology of wastewater treatment of a meat processing plant. In the process of water treatment, sequential processing takes place in an electrochemical module with a graphite anode, an electrochemical mo dule with an iron anode and exposure in a maturation and averaging chamber. It is proved that in a module with an iron anode, the generation of ferrates is observed, which simultaneously perform the functions of a mild oxidizer, coagulant and corrosion inh ibitor of steel.

Ti3AlC2 MXene nanosheets as a novel corrosion inhibitor for carbon steel in 0.5 M sulfuric acid solution.

Herein we report that Ti3AlC2 MXene nanosheets were identified as a highly effective cathodic protection corrosion inhibitor for carbon steel in hydrochloric acid solution. Ti3AlC2 Mxene nanosheets form a stable inhibition layer on metal surfaces due to their high adsorption capacity and act as a barrier or protective film to prevent attacks from corrosive substances and thus lead to an extended metal service life.

Corrosion Inhibition of Mild Steel in HCl Solution Using MPO: Experimental and Theoretical Insights

Corrosion is a pervasive challenge in various industrial applications, particularly in acidic environments. This comprehensive study delves into the effectiveness of 2-methyl-4-propyl-1,3-oxathiane (MPO) as a corrosion inhibitor for mild steel exposed to hydrochloric acid (HCl) solutions. The investigation employs weight loss techniques to assess the inhibitor's performance over varying durations (ranging from 1 to 48 hours) and concentrations (0.1 to 1 mM). At a concentration of 0.5 mM, the inhibitor demonstrates impressive inhibitory efficiency, ranging from 87.6% at 303 K to 92.9% at 333 K during a 5-hour exposure period. Additionally, the impact of temperature on the corrosion inhibition process is examined at temperatures of 303, 313, 323, and 333 K, showing substantial inhibition efficiencies. Quantum chemical calculations using Density Functional Theory (DFT) methods elucidate the molecular interactions between MPO and the metal surface. Notably, the analysis of EHOMO (Highest Occupied Molecular Orbital Energy), ELUMO (Lowest Unoccupied Molecular Orbital Energy), Egap (Energy Gap), total hardness (η), electronegativity (χ), and electron fraction transition atom (ΔN) reveals valuable insights into MPO's corrosion inhibition capabilities. The outcomes underscore MPO's potential as an effective corrosion inhibitor for mild steel in HCl environments, laying the groundwork for more efficient corrosion prevention strategies in industrial settings.

Expression of concern: Effectiveness of some novel heterocyclic compounds as corrosion inhibitors for carbon steel in 1 M HCl using practical and theoretical methods.

Expression of concern for 'Effectiveness of some novel heterocyclic compounds as corrosion inhibitors for carbon steel in 1 M HCl using practical and theoretical methods' by Abd El-Aziz S. Fouda et al., RSC Adv., 2021, 11, 19294-19309, https://doi.org/10.1039/D1RA03083C.

Mechanism of inhibitory action of fruit cake extracts as a new environmentally inhibitors of carbon steel corrosion

In this study the firstly study reported on the use of plum, cherry, nectarine and apple pomace extract as corrosion inhibitors of steel in water solution. Potentiodynamic polarization study showed that extracts act as a mixed type inhibitors with dominant cathodic effect. Linear polarization resistance method (LRP) assesses the time-related effect of inhibitors during open circuit potential corrosion. The results show that the inhibitory efficiency of our extract increases with increasing time formation protective film to reach 99 % in a concentration of 500 ppm. LC - MS and FTIR spectroscopy techniques can be concluded that several water-soluble interaction products of chemical reaction in NaCl are identified namely flavanol–anthocyanin and flavanol-aldehyde adducts. Subsequently, the iron-mediated complexation and oxidation of the extract components (flvonoids) in the aqueous solution were explored using UV-spectrophotometric and HPLC methods. With the passage of time, iron-mediated oxidative degradation and coupling reactions occurred, resulting in the production of hydroxybenzoic acid derivatives. Consequently, the inhibition decreased after 24 h. The chemisorption type of interaction of the product formed in the inhibited solution forming the adsorption-polymerization layer with the steel surface is established. Based on the quantum-chemically calculated parameters of the electronic structure of flavanol–anthocyanin and flavanol-aldehyde adducts, it was established for the first time that the combination of reactive fragments in them, which are spatially located in different planes with a higher quantity of hydroxyl groups, increases their adsorption activity and, as a result, their inhibitory capacity.

Experimental and Theoretical Investigations of Cordia Obliqua Leaves Extract as an Environmentally Benign Inhibitor for Mild Steel Corrosion in a 1 M HCl Solution

Experimental and Theoretical Investigations of Cordia Obliqua Leaves Extract as an Environmentally Benign Inhibitor for Mild Steel Corrosion in a 1 M HCl Solution

Optimization Study of Eggshell Extract as Inhibitor of Mild Steel Corrosion in a 30 wt% NaCl Solution

Optimization Study of Eggshell Extract as Inhibitor of Mild Steel Corrosion in a 30 wt% NaCl Solution

Experimental and computational study of a multi-active-site Schiff base as corrosion inhibitor of mild steel in 1 M HCl

In this study, the corrosion inhibition behavior of N,N′-(1,4-phenylene)bis(1,1-di(pyridin-2-yl)methanimine) (PBDPM) on mild steel in 1 M HCl at 30°C was evaluated under steady conditions. The corrosion inhibitor was synthesized by a one-step method. Electrochemical, energy dispersion spectrum (EDS) and water contact angle results revealed the adsorption behavior of the inhibitor at the metal–solution interface. The adsorption of PBDPM obeys the Langmuir adsorption isotherm. It is obvious that PBDPM exhibits good inhibition performance presumably due to its high surface coverage, as it forms a dense protective film on the surface of mild steel. The adsorption configuration and structure–activity relationships of the inhibitor were also explored theoretically by density functional theory (DFT) and molecular dynamics (MD), and the thermodynamic parameters and molecular active sites (the values of electrophilic attack and nucleophilic attack) were calculated.

Artequick as Inhibitor of ASTM A36 Mild Steel Corrosion through Anodic Sites Dissolution: Computational and Electrochemical Approach

Artequick as Inhibitor of ASTM A36 Mild Steel Corrosion through Anodic Sites Dissolution: Computational and Electrochemical Approach

Study of Protic Ionic Liquids as Sustained Corrosion Inhibitors for Mild Steel in Saline Solution with Acidic pH and Temperature Variations

Study of Protic Ionic Liquids as Sustained Corrosion Inhibitors for Mild Steel in Saline Solution with Acidic pH and Temperature Variations

Green synthesis of cadmium oxide nanoparticles (CdO-NPS) using syzygium cumini: exploring industrial applications of CdO NPs as a corrosion inhibitor of mild steel in the acidic environment.

Potentiodynamic polarization (PDP), electrochemical impedance spectroscopy (EIS) and weight loss measurements were used to assess the effectiveness of CdO-NPs as a corrosion inhibitor for carbon steel in 0.5 M H2SO4. It was amply shown that as the concentration of CdO-NPs increased, the cathodic currents decreased and the active corroding sites were blocked completely. Moreover, a decrease in the mass of mild steel in an aggressive environment was reduced gradually with an increase in the concentration (ppm) of CdO-NPs inhibitor, resulting in an increase in the inhibition efficiency. The novel synthesized CdO-NPs were characterized by FT-IR, XRD and SEM-EDX spectroscopy.

Synthesis of Green Inhibitor for Mild Steel Corrosion in a Sulphuric Acid Medium

Synthesis of Green Inhibitor for Mild Steel Corrosion in a Sulphuric Acid Medium