Steel In Hydrochloric Acid Solution Research Articles

Corrosion Inhibition of Mild Steel in Hydrochloric Acid Solution using Methanolic Extracts of Elsholtzia communis and Spilanthes acmella as Green Inhibitors

Corrosion Inhibition of Mild Steel in Hydrochloric Acid Solution using Methanolic Extracts of Elsholtzia communis and Spilanthes acmella as Green Inhibitors

Research on the corrosion inhibition performance and mechanism of pyrimidine quaternary ammonium salt

Purpose At present, research on the preparation of corrosion inhibitors using modified pyrimidine derivatives is still blank. The purpose of this study is to synthesize a new cationic mercaptopyrimidine derivative quaternary ammonium salt, known as DTEBTAC, that can be used as a corrosion inhibitor to slow down the metal corrosion problems encountered in oil and gas extraction processes. Design/methodology/approach A new corrosion inhibitor was synthesized by the reaction of anti-Markovnikov addition and nucleophilic substitution. The weight loss method was used to study the corrosion inhibition characteristics of synthetic corrosion inhibitors. Electrochemical and surface topography analyses were used to determine the type of inhibitor and the adsorption state formed on the surface of N80 steel. Molecular dynamics simulations and quantum chemistry calculations were used to investigate the synthetic corrosion inhibitor’s molecular structure and corrosion inhibition mechanisms. Findings The results of the weight loss method show that when the dosage of DTEBTAC is 1%, the corrosion rate of N80 steel in hydrochloric acid solution at 90? is 3.3325 g m-2 h-1. Electrochemical and surface morphology analysis show that DTEBTAC can form a protective layer on the surface of N80 steel, and is a hybrid corrosion inhibitor that can inhibit the main anode. Quantum chemical parameter calculation shows that DTEBTAC has a better corrosion inhibition effect than DTP. The molecular dynamics simulation results show that DTEBTAC has stronger binding energy than DTP, and forms a network packing structure through hydrogen bonding, and the adsorption stability is enhanced. Originality/value A novel cationic mercaptopyrimidine derivative quaternium-ammonium salt corrosion inhibitor was designed and provided. Compared with the prior art, the preparation method of the synthesized mercaptopyrimidine derivative quaternary ammonium salt corrosion inhibitor is simple, and the presence of nitrogen-positive ions, sulfur atoms and nitrogen-rich atoms has an obvious corrosion inhibition effect, which can be used to inhibit metal corrosion during oil and gas field exploitation. It not only expands the application field of new materials but also provides a new idea for the research and development of new corrosion inhibitors.

Seaweed extract as green corrosion inhibitor for carbon steel in hydrochloric acid solution

This study aimed to investigate the corrosion inhibition effect of seaweed extract abbreviated as SAE on carbon steel (CS) in 1.0 mol/L hydrochloric acid (HCl) solution. The functional groups in SAE were characterized using Fourier transform infrared (FTIR) spectroscopy. The corrosion inhibition effect of SAE on CS was determined through weight loss experiments, electrochemical tests, and scanning electron microscopy (SEM). Additionally, the composition of the corroded CS surface after immersion in SAE solution was measured through X-ray photoelectron spectroscopy (XPS) analysis. The results indicate that SAE achieves a corrosion inhibition efficiency of 95.0 % for CS in 1.0 mol/L HCl. Furthermore, SAE was identified as a mixed-type inhibitor. The adsorption of SAE on the CS surface follows the Langmuir adsorption isotherm model. UV–visible spectroscopy (UV–vis) studies confirmed that the corrosion inhibition of CS was achieved through the formation of CS-SAE phytoconstituents complex. Moreover, Molecular dynamics simulations (MS) and quantum chemical (QC) calculations were utilized to predict the adsorption properties of several major SAE components and the chemical parameters associated with inhibitory efficiency. This work offers insightful information for developing and applying eco-friendly CI for acid pickling or rust removal from CS.

Efficacy of Salvodera Persica Fruit as Corrosion Inhibitor on Mild Steel in Hydrochloric Acid Solution

Efficacy of Salvodera Persica Fruit as Corrosion Inhibitor on Mild Steel in Hydrochloric Acid Solution

Isoindigo derivatives as some potential corrosion inhibitors for mild steel in hydrochloric acid solution: Synthesis, experimental and theoretical studies

This investigation synthesized two isoindigo derivatives (IIDBr-NBr and IIDBr-MBr). These derivatives were then applied as green corrosion inhibitors for mild steel in a 1 mol L−1 HCl aqueous solution. The study investigated the corrosion inhibition performance of IIDBr-NBr and IIDBr-MBr through electrochemical and weight loss (WL) measurements, as well as surface analysis (SEM, AFM and XPS). The results showed that both IIDBr-NBr and IIDBr-MBr exhibited excellent corrosion inhibition performance (inhibition efficiency of 96.27 % for IIDBr-NBr and 96.46 % for IIDBr-MBr). Quantum chemical calculations based on density functional theory (DFT) and molecular dynamics (MD) were used to reveal the adsorption mechanisms of IIDBr-NBr and IIDBr-MBr at the steel/solution interface.

Protection of low-carbon steel in hydrochloric acid solution with mixtures of inhibitors containing surfactants

Protection of low-carbon steel in hydrochloric acid solution with mixtures of inhibitors containing surfactants

Zwitterion modified chitosan as a high-performance corrosion inhibitor for mild steel in hydrochloric acid solution

Herein, a novel chitosan Schiff base (CS-FGA) as a sustainable corrosion inhibitor has been successfully synthesized via a simple amidation reaction by using an imidazolium zwitterion and chitosan (CS). The corrosion inhibition property of CS-FGA for mild steel (MS) in a 1.0 M HCl solution was studied by various electrochemical tests and physical characterization methods. The findings indicate that the maximum inhibition efficiency of CS-FGA as a mixed-type inhibitor for MS in 1.0 M HCl solution with 400 mg L−1 reaches 97.6 %, much much higher than the CS and the recently reported chitosan-based inhibitors. Scanning electron microscopy (SEM), atomic force microscopy (AFM), and water contact angle (WCA) results reveal that the CS-FGA molecules firmly adsorb on the MS surface to form a protective layer. The adsorption of CS-FGA on the MS surface belongs to the Langmuir adsorption isotherm containing both the physisorption and chemisorption. According to the X-ray photoelectron spectroscopy (XPS) and UV–vis spectrum, FeN bonds presented on the MS surface further prove the chemisorption between CS-FGA and Fe to generate the stable protective layer. Additionally, theoretical calculations from quantum chemical calculation (DFT) and molecular simulations (MD) were performed to reveal the inhibition mechanism of CS-FGA.

Study on the corrosion inhibition performance of Schiff base corrosion inhibitor on Q235 steel

Q235 steel is widely used in industry and daily life, and it is prone to corrosion during use, especially in hydrochloric acid solution where corrosion is particularly severe. Schiff base organic compounds can significantly inhibit the corrosion of Q235 steel in hydrochloric acid solution, making them a green and environmentally friendly organic compound. This article uses aniline, octadecylamine, and glutaraldehyde as raw materials to prepare two Schiff base corrosion inhibitors, namely bisaniline Schiff base and bisoctadecylamine Schiff base (named BXFJ and SXFJ respectively). The corrosion inhibition performance and mechanism of these two Schiff base inhibitors in Q235 steel in hydrochloric acid solution were studied using weight loss method, electrochemical testing, quantum chemical theory calculation, and molecular dynamics simulation. The results of weight loss method and electrochemical testing show that in a 1mol/L HCl solution, the corrosion inhibition performance of BXFJ at a concentration of 25mg/L is higher than that of SXFJ, indicating that BXFJ can exert excellent corrosion inhibition performance in HCl environment. Density functional theory (DFT) indicates that the active sites of the two Schiff bases are C=N double bonds, and molecular dynamics (MD) further confirms that both Schiff base corrosion inhibitors can adsorb on the surface of Q235 steel.

Oleaster Leaf Extract: A Potential Environmentally Friendly Inhibitor 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 90% for 0.018% w/v concentration on the mild steel, 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.

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.

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.

PH‐Responsive Chitosan Microspheres Loaded with Gemini Imidazolium‐Based Ionic Liquids as Smart Corrosion Inhibitors for N80 Steel in Hydrochloric Acid Solution

Chitosan microspheres (CSM) loaded with synthesized Gemini imidazolium‐based ionic liquids ([C2(Bim)2]Cl2@CSM and [C6(Bim)2]Br2@CSM) are constructed as smart corrosion inhibitors to protect N80 steel in hydrochloric acid solution. The optimal inhibition efficiency of [C2(Bim)2]Cl2 and [C6(Bim)2]Br2 at 300 mg L−1 reaches 94.68% and 95.96%, respectively, indicating mixed‐type inhibition behavior. On this basis, the prepared [C2(Bim)2]Cl2@CSM and [C6(Bim)2]Br2@CSM can proactively identify corrosive environments and protect the metal. The microspheres are pH‐responsive owing to the presence of Schiff‐base C═N bonds and the loaded inhibitors can be released rapidly in acidic environment. Released inhibitors are delivered to corroded sites and synergistically interact with decomposed microspheres for enhanced corrosion inhibition effect.

Use of expired Sulbutiamine drug as anticorrosive agent for carbon steel in hydrochloric acid solution

Use of expired Sulbutiamine drug as anticorrosive agent for carbon steel in hydrochloric acid solution

Investigation of the mechanisms and adsorption of a new pyrazole derivative against corrosion of carbon steel in hydrochloric acid solution: Experimental methods and theoretical calculations

In an electrolyte of hydrochloric acid (1 M HCl) at 303 K, the effectiveness of the pyrazole derivative N,N,N′,N′-tetrakis((3,5-dimethyl-1 H-pyrazol-1-yl)methyl)pyridine-2,6-diamine (PRPD) as a corrosion inhibitor was examined. Several experimental methods, such as electrochemical impedance spectroscopy (EIS), potentiodynamic polarization (PDP), surface morphology analysis (SEM) coupled with energy dispersive X-ray analysis (EDX), AFM, contact angle (CA), FTIR, X-ray photoelectron spectroscopy (XPS), UV–visible, and X-ray diffraction (XRD), were used to conduct the measurements. To support these experimental findings, we use theoretical calculations such as density functional theory (DFT) and molecular dynamics (MD) simulations. The achieved findings manifested that the PRPD behaves as a powerful corrosion inhibitor, achieving an anti-corrosion performance of 97.2% at 0.001 M. The PDP technique suggests that PRPD is part of a mixed-type inhibitor. The PRPD molecules are chemisorbed at the carbon steel (CS) surface in accordance with the Langmuir isotherm model. On the ground of surface analysis, the build-up of an adsorptive layer inhibitor on the steel surface has been verified. DFT and MD simulation analyses have validated the experimental findings. These results contribute to the creation of successful corrosion control methods by providing insightful information about the inhibition of carbon steel corrosion in a 1 M HCl environment.

Effect of some organic surfactants on the corrosion behavior of low-carbon steel in hydrochloric acid solution

Effect of some organic surfactants on the corrosion behavior of low-carbon steel in hydrochloric acid solution

Experimental and Computational Study on Inhibitory Effect and Adsorption Properties of N-Acetylcysteine Amino Acid in Acid Environment.

Potentiodynamic polarization (PDP) and electrochemical impedance spectroscopy (EIS) were applied to study the inhibitory effect of N-acetylcysteine (NAC) on corrosion inhibition of carbon steel in hydrochloric acid solution. N-acetylcysteine influenced the iron dissolution to a greater extent than the hydrogen evolution reaction acting as a mixed inhibitor, predominantly anodic. The charge transfer resistance (Rct) gradually increased with the inhibitor concentration. From both methods, the inhibition efficiency (IE) reached a value of 89 ± 1% and NAC adsorption followed the Temkin isotherm. The value of adsorption Gibbs energy (ΔGadso), around -35 kJ mol-1, indicated a spontaneous adsorption and mixed action mechanism, with NAC chemical adsorption prevailing over physical one. New data will be reported by the computational study, that was performed using the density functional theory (DFT) method in aqueous phase. Quantum chemical descriptors were determined by B3LYP theory level with 6-31G+(d) basis set. Metropolis Monte Carlo atomistic simulation was used to reveal the adsorption configuration and interactions between acetylcysteine molecules and the carbon steel surface. Theoretical results were consistent with the experimental data, showing that the inhibitor action mechanism consisted of mainly chemisorption of its molecules on the carbon steel surface accompanied by van der Waals forces and electrostatic interactions.

Some New Synthesized Gemini Cationic Surfactants as Corrosion Inhibitors for Carbon Steel in Hydrochloric Acid Solution

Some New Synthesized Gemini Cationic Surfactants as Corrosion Inhibitors for Carbon Steel in Hydrochloric Acid Solution

Preparation and performance of a new silylated functional carbon quantum dots corrosion inhibitor

Adding green corrosion inhibitors to prevent the pickling process is critical to both corrosion of carbon steel and its environmental protection. Carbon quantum dots(CDs) corrosion inhibitors prepared using a hydrothermal method are considered promising candidates for carbon steel corrosion protection. Here, a new high-efficiency silylated functional carbon quantum dot (CDCA-Si-Pei) was prepared by hydrothermal method and evaluated for its corrosion inhibition performance as a corrosion inhibitor for carbon steel in hydrochloric acid solution (1 M HCl). Atomic force microscopy (AFM) and scanning electron microscopy (SEM) analysis revealed that the surface roughness of carbon steel treated with CDCA-Si-Pei was significantly reduced, the surface was free of corrosion products, and the adsorption mechanism of CDCA-Si-Pei was chemical and physical co-adsorption. The experimental results show that CDCA-Si-Pei is a highly efficient and stable inhibitor with obvious anti-corrosion effects, especially at a concentration of 10 mg/L and its corrosion inhibition rate of 96.34 % and 94.79 % after three months of placement.

The adsorption and inhibition efficiency of 2-amino-4-methoxy-6-methyl-1,3,5-triazine for corrosion of mild steel in hydrochloric acid solution

PurposeThis study aims to prevent mild steel (MS) against corrosion in 0.5 M HCl solution, 2-amino-4-methoxy-6-methyl-1,3,5-triazine was used. The effectiveness of the compound as a corrosion inhibitor was studied via electrochemical, surface and theoretical calculation techniques.Design/methodology/approachFor concentrations ranging from 0.5 to 10.0 mM, almost similar polarization resistances were obtained from electrochemical impedance spectroscopy (EIS) and linear polarization resistance tests. It also investigated inhibitive activity of 2-amino-4-methoxy-6-methyl-1,3,5-triazine on the steel surface using scanning electron and atomic force microscope instruments. Langmuir adsorption is the best matched isotherm for the adsorption of the inhibitor to the steel surface.FindingsEIS method was used to determine inhibition efficiency, which was determined to be 95.7% for 10.0 mM inhibitor containing acid solution. Density functional theory’s predictions for quantum chemistry agreed well with the other experimental results.Originality/valueThe methods used in this study are effective and applicable; the used organic inhibitor is 2-amino-4-methoxy-6-methyl-1,3,5-triazine; and protective effectiveness is important, which is crucial for the task of MS corrosion prevention.

Citrus sinensis peel extract as corrosion inhibitor for mild steel in hydrochloric acid solution

This study investigated the corrosion inhibition properties of Citrus sinensis (CS) as a green inhibitor for mild steel in1 M HCl solution at different concentrations (100 mM, 150 mM and 200 mM). The corrosion behaviour of mild steel in the presence of absence of CS was evaluated using weight loss measurement, and scanning electron microscopy (SEM). Results of weight loss measurement showed that the corrosion rate of mild steel in 1 M HCl solution was significantly reduced with increasing concentrations of CS, inhibition efficiency reaching up to 98 %. SEM analysis revealed that the surface of mild steel in the presence of CS was covered a thin and homogenous protective film, while the surface of mild steel without CS was corroded and rough. An isothermal analysis was also carried out and the results indicated that the adsorption of CS on the mild steel surface followed the Freundlich isotherm equation. The value of n was found to be greater than 1, indicating that the adsorption of CS on the mild steel surface was favourable and increased with the inhibitor concentration. The value of the adsorption coefficient (Kf­) was found to be highest at 200 mM of CS, indicating a high adsorption capacity and strength of the CS on the mild steel surface