Steel In Hydrochloric Acid Solution Research Articles

Corrosion inhibition of thiadiazole derivative for mild steel in hydrochloric acid solution

Corrosion inhibition of thiadiazole derivative for mild steel in hydrochloric acid solution

Electrochemical and thermodynamic properties of 1-phenyl-3-(phenylamino)propan-1-one with Na2WO4 on N80 steel.

The corrosion inhibition effect and adsorption behaviour of 1-phenyl-3-(phenylamino)propan-1-one (PPAPO) on N80 steel in hydrochloric acid solution have been investigated by Fourier transform infrared (FTIR), electrochemical method and scanning electron microscopy. The corrosion inhibition mechanism of PPAPO mixed with Na2WO4 was interpreted from the thermodynamic point of view. The results indicated that PPAPO mixed with Na2WO4 acted as a mixed-type inhibitor. The inhibition film formed on N80 steel surface can increase the charge transfer resistance and prevent the occurrence of corrosion reaction, thereby reducing the corrosion rate of metal surface. The inhibition efficiency was up to 96.65%; the inhibitor PPAPO with Na2WO4 showed good synergistic effect on N80 corrosion behaviour in HCl solution. The adsorption behaviour of inhibitors on N80 steel surface was in accordance with the Langmuir adsorption model and mainly belonged to chemisorption. The adsorption process of PPAPO on N80 surface was spontaneous and irreversible endothermic reaction.

Corrosion inhibition effect of 1-butyl-3-methyl-1H-benzimidazolium iodide for 2205 duplex stainless steel in hydrochloric acid solution

Corrosion inhibition effect of 1-butyl-3-methyl-1H-benzimidazolium iodide for 2205 duplex stainless steel in hydrochloric acid solution

Effectiveness of Irvingia wombolu extract on corrosion inhibition of mild steel in hydrochloric acid solution

The recent demand for the use of natural environmentally friendly agricultural wastes, as inhibitors for corrosion mitigation, informed this research. The study explores the potential of Irvingia wombolu at concentrations of 0.2 g l−1, 0.5 g l−1, and 1 g l−1, as an alternative inhibitor of mild steel corrosion in corrosive environments. This study investigates the corrosion behavior of mild steel in 1.5 M hydrochloric acid solution at different solution temperatures (299 K and 303 K) and immersion times (2 h, 4 h, 6 h, 8 h, 10 h, and 12 h) using weight loss technique, x-ray fluorescence, and Fourier Transformation Infra-Red (FTIR) spectroscopy. Results showed increasing corrosion rate of the mild steel in hydrochloric acid without extract addition, with increasing temperature (from 299 K to 303 K) and immersion time (2 h to 12 h). The corrosion rate decreased with increasing immersion time with extract addition. The extract demonstrated an effective inhibition, with maximum inhibition efficiency of 97.87% obtained at 1 g l−1 extract, lower solution temperature (299 K), and longer immersion time (12 h). FTIR analysis revealed the interaction of extract molecules with the mild steel surface. The results showed that Irvingia wombolu effectively inhibits the corrosion of mild steel in hydrochloric acid solution.

2-Amino-1-(4-aminophenyl)-1H-pyrrolo(2,3-b)quinoxaline-3-carbonitrile as an efficient inhibitor for the corrosion of C38 steel in hydrochloric acid solution

The inhibiting properties of 2-Amino-1-(4-aminophenyl)-1H-pyrrolo(2,3-b)quinoxaline-3-carbonitrile (AHPQC) were examined of C38 steel corrosion in molar hydrochloric acid using electrochemical techniques. Impedance data displayed the AHPQC inhibits C38 steel corrosion becoming the adsorbate at metal/electrolyte interfaces. Polarization study indicated that AHPQC is an anodic-cathodic inhibitor. The inhibition efficiencies of AHPQC calculated by both methods reaches 91%. The Langmuir adsorption isotherm was observed for the AHPQC adsorption and its adsorption is realized by physical adsorption; due to the protonated forms of the AHPQC molecule in acid medium. XPS technique was used to discuss the mechanism for the adsorption process of the AHPQC molecule.

Corrosion Inhibition Performance of Coconut Leaf Extract as a Green Corrosion Inhibitor for X65 Steel in Hydrochloric Acid Solution

Corrosion Inhibition Performance of Coconut Leaf Extract as a Green Corrosion Inhibitor for X65 Steel in Hydrochloric Acid Solution

Corrosion inhibition of carbon steel in hydrochloric acid solution using newly synthesized urea-based cationic fluorosurfactants: experimental and computational investigations

The results of this report show that synthesized fluorosurfactants can be applied as effective corrosion inhibitors with good anticorrosion properties for hydrochloric acid pickling of carbon steel.

New environmental friendly corrosion inhibitor of mild steel in hydrochloric acid solution: Adsorption and thermal studies

In the present investigation, coumarin derivative 4-((4-amino-5-thio-1,2,4-triazol-3-yl)methyl)coumarin (ATTC) have synthesized as novel ecofriendly corrosion inhibitor and evaluated the corrosive ...

Synthesis, characterization and application of acrylate-based poly ionic liquid for corrosion protection of C1020 steel In hydrochloric acid solution

Poly ionic liquids (PIL) are eco-friendly in addition to being sustainable compounds that can be easily prepared and tailored according to the application. In this study, a novel PIL polymer based on acrylate was chemically synthesised via free radical polymerization method controlled by quenching the reversible reaction. The prepared 1-Butyl-3 Methylimidazolium Acrylate polymer (PAL) was characterised using FTIR as well as NMR to confirm the chemical structure. GPC was employed to determine the average molecular weight of the new polymer. PAL was applied as an effective corrosion inhibitor for C1020 steel in 1M HCl aqueous solution. Weight loss and electrochemical techniques, PDP and EIS, were applied to evaluate the corrosion inhibition performance. The electrochemical results showed that PAL acts as a mixed-type inhibitor reaches 91.8% at room temperature. The thermodynamic calculations showed that the adsorption process is exothermic. Furthermore, PAL molecules were adsorbed on the metal surface by both chemisorption and physisorption processes. SEM analysis was carried out to confirm the corrosion evaluation results. Also, quantum chemical calculations, at the B3LYP/DND level of theory, were carried out to correlate the electronic structure parameters of PAL inhibitor to its adsorption behaviour which in turn is relevant to the inhibition efficiency. Additionally, Monte Carlo simulation (MC) was conducted to investigate the adsorption modes and the interaction energies of the inhibitor on iron surface.

Sunflower Head Pectin with Different Molecular Weights as Promising Green Corrosion Inhibitors of Carbon Steel in Hydrochloric Acid Solution.

Three sunflower head pectin (SFHP) with different molecular weights (Mw = 4.50, 97.23, and 254.64 kDa) were obtained by enzyme-assisted extraction and characterized by FTIR and 1H NMR spectroscopy. The corrosion inhibition of mild steel in 1 M HCl solution was evaluated by the weight loss measurement. The inhibition efficiency (IE%) increased as its concentration increases and decreased as the temperature increases. The SFHP with the lowest Mw of 4.50 kDa exhibited an IEmax of 92.05% at the medium concentration (2.0 g L–1). The inhibition properties of SFHP (Mw = 4.50 kDa) were investigated electrochemically and theoretically. The electrochemical impedance spectroscopy (EIS) revealed that the charge-transfer resistance increased as its concentration increases, the double-layer capacitance decreased as concentration increases, and the IE% also increased as concentration increases. The potentiodynamic polarization (PP) revealed that the SFHP acted as mixed-type inhibitor. The IE% reached 90.3% at the medium concentration (2.0 g L–1) of SHFP. The three-dimensional super depth digital microscopy and scanning electron microscopy tests confirmed the formation of inhibitor films on the surface of mild steel. The adsorption of SFHP on the mild steel surface was proved to obey the Langmuir adsorption isotherm. The theoretical studies via density functional theory and molecular dynamics simulation further revealed the mechanism of corrosion inhibition.

Exploring the potential role of pyrazoline derivatives in corrosion inhibition of mild steel in hydrochloric acid solution: Insights from experimental and computational studies

Iron and its alloys are commonly used materials in petroleum refining facilities. However, poor corrosion resistance is always a disturbing problem for these industries. Herein, we demonstrated the utility of two pyrazoline derivatives (PYRs), namely, 2-(4-(4,5-dihydro-3-(4-methoxyphenyl)-1H-pyrazol-5-yl)phenoxy)acetic acid (PYR-1) and 2-(4-(4,5-dihydro-3-p-tolyl-1H-pyrazol-5-yl)phenoxy)acetic acid (PYR-2) for enhancing mild steel (MS) resistance in 1.0 M HCl using chemical, electrochemical, scanning electron microscope (SEM), X-ray photoelectron spectroscopy (XPS), and computational techniques. Weight loss measurements revealed that the optimum concentration of inhibitors is 5 mM. The maximum inhibition efficiencies (based on electrochemical results) were obtained 94% and 88% for PYR-1 and PYR-2, respectively. Pyrazolines retard corrosion at room temperatures and show high inhibition efficiency at higher temperatures, (above 90% at 333 K). XPS results showed that these compounds could effectively inhibit acid attack through physical and chemical adsorption on the metal surface. PYRs adsorption onto the steel surface follows Langmuir adsorption model. Electrochemical results revealed that the new compounds could exhibit excellent corrosion inhibition performance and displayed mixed-type inhibition. The performances of inhibitor films and the potential mechanisms were also investigated theoretically using MD simulation, radial distribution function (RDF), mean square displacement (MSD) and free volume theory. The present results will be helpful to uncover the versatile importance of pyrazoline compounds in the corrosion inhibition process.

Thermodynamic and Electrochemical Analysis of Synergistic Corrosion Inhibition Performance of Natural Polysaccharides with Metal Halides on Mild Steel in Hydrochloric Acid Solution

The effect of synergistic corrosion inhibition efficiency of Azadirachta indica gum with halides (KCl, KBr and KI) on mild steel in 1 mol L−1 HCl was studied using conventional weight loss and electrochemical studies. The temperature (303–328 ± 1 K) and time (1, 2, 3, 4, 6 and 24 h) effect on the inhibition of corrosion has also been tested. The inhibition efficiency of gum exudates of Azadirachta indica considerably increased with the presence of halide ions at all temperature ranges studied. Corrosion kinetic parameters and thermodynamic adsorption parameters were calculated and discussed in detail. The mode of adsorption of inhibitor on the mild steel surface was examined by FT-IR spectroscopy.

Synthesis and anti-corrosion performance of C21H25NO on corrosion of N80 steel in hydrochloric acid solution

Purpose In this work, a kind of Mannich base (C21H25NO) was synthesized with cinnamal aldehyde, acetophenone and diethylamine in a condensing reflux device based on the conventional method. Optimization of the inhibitor concentration was explored. Design/methodology/approach Spectral properties of this compound was investigated by FTIR, and its inhibition efficiency and mechanism on N80 steel in 20% hydrochloric acid solution were studied by weight loss measurement, electrochemical measurement (potentiodynamic polarization and electrochemical impedance spectroscopy) and surface analytical measurement (scanning electron microscope with energy dispersive spectrometer). Findings The results showed that the new inhibitor reduced the double-layer capacitance and increased the charge transfer resistance. The inhibition efficiency is 99.7% when the concentration of C21H25NO is 3%. The adsorption of C21H25NO on N80 steel surface in 20% HCl solution was found to be spontaneous and steady. Observed from the steel surface, an inhibition film was confirmed to be presented after adding inhibitor and successfully hindered the corrosive ions from reaching the bulk steel. Originality/value A new Mannich base (C21H25NO) was synthesized by cinnamal aldehyde, acetophenone and diethylamine for the corrosion prevention of N80 steel in 20% hydrochloric acid solution.

Understanding the Corrosion Inhibition Mechanism of Mild Steel in Hydrochloric Acid by a Triazole Derivative: A Combined Experimental and Theoretical Approach

The effect of an heterocycle triazole, namely (1-(4-methoxyphenyl)-1H-1,2,3-triazol-4-yl)methanol (MTM) on the corrosion of mild steel in hydrochloric acid solution has been investigated using electrochemical methods for a wide temperature range, FT-IR spectroscopy and SEM techniques. MTM was found to inhibit the corrosion of steel by adsorbing to a great extent, even at high temperatures. Computational results point to the phenyl ring as the main structural part which is responsible of the adsorption by electron-accepting to the mild steel surface, while the triazol ring is responsible for the electron-donating. Molecular dynamics simulations (MD), reduced density gradient (RDG), radial distribution function (RDF) provides further insights into the interpretation of inhibition mechanism in a more realistic condition, confirming that the MTM can effectively protect mild steel against corrosion by constraining the diffusion of the particles present on the steel surface.

Corrosion Inhibition Efficiency of Expired Nitazoxanide Drug on Carbon Steel in Hydrochloric Acid Solution

Corrosion Inhibition Efficiency of Expired Nitazoxanide Drug on Carbon Steel in Hydrochloric Acid Solution

Cinnamomum zeylanicum Extract as Green Corrosion Inhibitor for Carbon Steel in Hydrochloric Acid Solutions

The extract of cinnamomum have been evaluated as green inhibitor for the corrosion of Carbon steel in 1M HCl solution was investigated using weight loss, potentiodynamic polarization, ac electrochemical impedance spectroscopy (EIS) , electrochemical frequency modulation (FEM) and energy dispersion spectroscopy (EDS) and scanning electron microscopy (SEM) methods of monitoring corrosion . The inhibitive property of the extract is attributed to the presence of cinnamic aldehyde as major constituent in the extract. measurements showed that this extract act as mixed-type inhibitor. The inhibition efficiency was found to increase with inhibitor concentration. Results obtained by various techniques are close to each other and maximum efficiency of 81.1 % is acknowledged at the inhibitor concentration of 600 ppm. Langmuir isotherm model is found most suitable to explain adsorption behavior of inhibitor for C-steel surface. Molecular adsorption of inhibitor over C- steel surface is found responsible for corrosion inhibition of C-steel in acid.

The comparison of imidazolium Gemini surfactant [C14-4-C14im]Br2 and its corresponding monomer as corrosion inhibitors for A3 carbon steel in hydrochloric acid solutions: Experimental and quantum chemical studies

The inhibitory behaviors of imidazolium Gemini surfactant ([C14-4-C14im]Br2) on A3 carbon steel in HCl solutions, which is compared with its corresponding monomer ([C14mim]Br), have been investigated using electrochemical impedance spectroscopy (EIS), polarization curves, weight loss measurement and the quantum chemical study. Results reveal that the corrosion inhibition efficiency (IE) of [C14-4-C14im]Br2 reaches 96% at 1.0 × 10−5 mol∙L-1, and its IE value is higher than that of [C14mim]Br at the same concentration. Based on weight loss results, the adsorption of inhibitors on the carbon steel surface follows Langmuir isotherm, and thermodynamic parameters of adsorption such as the standard free energy of adsorption (ΔG0ads) and the enthalpy of adsorption (ΔH0ads) are calculated and discussed. The adsorption of [C14-4-C14im]Br2 is an endothermic processes, which is suitable to use in the relatively high temperature, while the opposite for [C14mim]Br is the case with an exothermic processes. The quantum chemical calculation is employed to interpret the possible inhibition mechanism of [C14-4-C14im]Br2 and [C14mim]Br. This work would supply basis data of the inhibitive ability of Gemini surfactants and have certain theoretical guidance on designing and developing new imidazolium derivatives used as corrosion inhibitors.

Henna Extract as Green Corrosion Inhibitor for Carbon Steel in Hydrochloric Acid Solution

Henna Extract as Green Corrosion Inhibitor for Carbon Steel in Hydrochloric Acid Solution

Corrosion Inhibition and Adsorption Behavior of Nerium Oleander Extract on Carbon Steel in Hydrochloric Acid Solution

Corrosion Inhibition and Adsorption Behavior of Nerium Oleander Extract on Carbon Steel in Hydrochloric Acid Solution

Some New Nonionic Surfactants Based on Propane Tricarboxylic Acid as Corrosion Inhibitors for Low Carbon Steel in Hydrochloric Acid Solutions

The effect of some new nonionic surfactants namely, N1,N2,N3-tris ((14-amino-3,6,9,12-tetraazatetradecyl) carbamothioyl) propane-1,2,3-tricarboxamide (compound I) and N1,N2,N3-tris((2-hydroxyethyl) carbamothioyl) propane-1,2,3-tricarboxamide (compound II) for the corrosion of low carbon steel (LCS) in 1.0 M HCl was evaluated by electrochemical and non-electrochemical techniques. From weight loss measurements, the concentration of these compounds and the temperature of the medium have a large effect on the inhibition efficiency (IE%). The IE% reached 93% for compound (I) and 77.7% for compound (II) at 75 ppm. The behavior of these compounds obeys the Temkin isotherm with good fitting. Polarization curves of these surfactants indicate that they affect both anodic metal dissolution and cathodic H2 evolution (i.e. mixed type). The action of the addition of these compounds on the LCS was detected using scanning electron microscopy, energy disperse X-ray, Fourier-transform infra-red (FTIR) spectroscopy and atomic force microscopy (AFM) techniques. Electrochemical and non-electrochemical methods gave matched results.