Corrosion Inhibition Research Articles

Influence of multilayer sea sand and Shewanella algae on the corrosion behavior of 316 SS

The effects of multilayer sea sand particles of varying sizes and Shewanella algae (S. algae) on the corrosion behavior of 316 stainless steel (SS) were investigated. The findings reveal that in a sterile environment, sand hinders the diffusion of dissolved oxygen, thereby impeding the growth of the passive film and enhancing the corrosion of 316 SS. The promotion effect intensifies as the particle size of the sand decreases. In a non-sterile environment, in the absence of sand, S. algae accelerates the corrosion by consuming dissolved oxygen, and expediting the breakdown of passive film. The corrosion acceleration caused by S. algae is markedly greater than that induced by sand. When sand is present, it markedly reduces the effective attachment of S. algae, thereby mitigating the corrosion-accelerating effect of S. algae. Additionally, a reduction in sand particle size leads to a decrease in S. algae attachment and an enhancement in corrosion inhibition.

Corrosion inhibition properties of graphene and reduced graphene oxide on aluminum surface: a comparative analysis from experimental and theoretical studies

Corrosion inhibition properties of graphene and reduced graphene oxide on aluminum surface: a comparative analysis from experimental and theoretical studies

Exploring the anticorrosion properties of wastewater from a winemaking process for the protection of carbon steel in acid environments

This study investigates the potential conversion and application of the wastewater from a winemaking industry for the corrosion protection of metallic materials. Grain-soaked wastewater extract (herein called SOW) was collected from the leached grain wastewater of Sichuan-style Xiaoqu Baijiu. The elemental analysis results indicated that SOW was an oxygen rich compound containing N and S heteroatoms, and Fourier transform infrared spectroscopy also confirmed that SOW was rich in multiple functional groups. The effect of SOW on the corrosion suppression of Q235B carbon steel in 0.5 M H2SO4 solution was investigated through electrochemical measurements, weight loss experiments and surface analysis technology. The results revealed that SOW was an excellent anticorrosion material for Q235B carbon steel, especially after the combination of SOW and potassium iodide (KI), the corrosion inhibition efficiency was up to 94.07% at 30 °C. Surface analysis further demonstrated the corrosion inhibition effect of SOW on Q235B carbon steel in H2SO4 solution. Moreover, the thermodynamic and kinetic parameters were calculated to reveal the corrosion inhibition mechanism of SOW.

Impact of cinnamaldehyde thiosemicarbazone on the corrosion of mild steel in 1 M and 15% HCl

The present work highlights the impact of cinnamaldehyde thiosemicarbazone (CT) as a corrosion inhibitor (CI) on the deterioration of mild steel (MS) in 1 M and 15% HCl. The synthesis of CT was accomplished with the help of cinnamaldehyde and thiosemicarbazide using Schiff-base chemistry, and the product's structure was verified by 1H- Nuclear Magnetic Resonance (NMR) and Infrared (IR) spectroscopy. The anti-corrosion performance of CT was performed on the MS using gravimetric methods, electrochemical impedance spectroscopy (EIS), and potentiodynamic polarization studies (PDP). The experimental results of the CT molecule's adsorption on an MS surface in 1 M and 15% HCl align with the Langmuir adsorption isotherm. The EIS study shows that as the CT concentration increases, charge transfer resistance increases with 93.18% (using 1 mM of CT) and 97.63% (using 4 mM of CT) corrosion inhibition efficiency (IE) in 1 M and 15% HCl, respectively. PDP suggests that CT works as a mixed-type inhibitor as CT suppresses both anodic and cathodic reactions. The gravimetric analysis confirmed that the developed CT exhibited 95.02% (using 1 mM of CT) and 96.65% (using 4 mM of CT) corrosion inhibition efficiency (IE) in 1 M and 15% HCl at 303 K, respectively. But at 343 K, in 1 M and 15% HCl, the anti-corrosion performance of CT on MS was reduced to 86.74% and 92.50%, respectively. The Experimental results were consistent with the theoretical results with the help of DFT. The surface morphology of the sample was examined under FE-SEM.

PDINN as an Efficient and Environmentally Friendly Corrosion Inhibitor for Mild Steel in HCl: A Comprehensive Investigation

The screening of environmentally friendly, efficient and high-temperature-resistant organic corrosion inhibitors represents a significant means of reducing metal losses in industrial production. In this study, we investigated using aliphatic amine-functionalized perylene-diimide (PDINN) to inhibit Q235 steel in 1 M HCl media. The results show that PDINN significantly inhibits corrosion of Q235 steel in 1 M HCl. It is of greater significance that PDINN’s inhibition is unresponsive to temperature fluctuations in the corrosive environment, maintaining an efficiency of 86.5% at an ambient temperature of 328 K. DFT and MD analyses indicate that the exceptional inhibitory capacity of PDINN is closely associated with the extensive conjugated structure within the molecule, where it is firmly adsorbed on the Fe (110) via π-electrons.

Natural deep eutectic solvents as a green inhibitor of carbon steel corrosion in sulphuric acid

Natural deep eutectic solvents as a green inhibitor of carbon steel corrosion in sulphuric acid

Sorption of Organic Micropollutants to an Agricultural Soil: Effect of Ionic Strength, Cation Valence and pH

Organic micropollutants (OMP) can enter agricultural soils via irrigation with reclaimed water. To better assess ecological risks associated with water reuse, a profound knowledge on the sorption of OMP to soils and how it is affected by varying matrix properties is essential. This study evaluates the sorption characteristics of ten OMP — including pharmaceuticals (carbamazepine, diclofenac, primidone, sulfamethoxazole, valsartan acid), artificial sweeteners (acesulfame, saccharin), and the corrosion inhibitor benzotriazole — in an agricultural soil under variable ionic strength (0, 0.03, and 0.3 mol L−1), cation valence (Na+ vs. Ca2+), and pH conditions (equilibrium pH vs. pH 7.5). In batch experiments, sorption of most OMP showed a bell-shaped response to increasing ionic strength (IS) with CaCl2, with peak sorption observed at moderate IS (0.03 mol L⁻1) and reductions at higher IS, suggesting cation bridging effects and competition dynamics. Additionally, anionic OMP exhibited significantly reduced sorption at higher pH (7.5) due to increased electrostatic repulsion. Linear sorption coefficients (Kd) varied by up to a factor of six across treatments, with stronger effects observed in the topsoil layer, caused by higher organic carbon content. Altogether, the findings of this study highlight the need to consider solution chemistry and specific matrix effects to improve the prediction quality of OMP transport and retention in agricultural soils. The results underline that grouping OMP solely by charge may not suffice for risk assessment, as sorption behaviors are highly substance and soil-specific.Graphical

Calotropis procera Latex Extract as an Effective Green Corrosion Inhibitor for Mild Steel in Acidic Medium: Experimental and Quantum Chemical Approaches

ABSTRACTIn this work, Calotropis procera latex extract (CPLE) was evaluated as an environmentally benign corrosion inhibition on mild steel in 1‐M HCl using gravimetric, electrochemical, surface, and computational approaches. The results revealed that CPLE exhibited an efficient corrosion inhibitor with the efficiency of 94.26% and 93.10% at 200‐ppm concentration from electrochemical and weight loss studies, respectively, and the deviation between these results is within the accepted uncertainty due to the methods used as well as experimental error. A weight loss study revealed that the effectiveness of plant extracts increases as their concentration increases. The effect of temperature on corrosion behavior was studied using the optimal concentration of CPLE in the temperature range of 303–333 K. As the temperature rises, the inhibitory efficiency decreases. Potentiodynamic polarization results disclose that CPLE acts as a mixed‐type inhibitor. CPLE inhibits metal corrosion via an adsorption mechanism and followed by the Langmuir adsorption isotherm. Molecular dynamics (MD) simulations confirm that all four molecules—3,7,10‐trimethyl pentadecane‐ol, hydroxy hexanone, decene, and triisopropyl benzene—adsorb partially parallel on Fe(110) with interaction energies aligning with DFT trends, identifying 3,7,10‐trimethyl pentadecane‐ol as the strongest inhibitor. Surface studies such as AFM, SEM, FTIR spectroscopy, and UV‐visible confirmed the adsorption‐mediated corrosion inhibition. DFT study reveals that 3,7,10 trimethyl pentadecane‐ol is the most effective component of CPLE extraction to interact with metal surface.

Experimental and theoretical research of three pyridine derivatives as corrosion inhibitors on steel in HCl acid solution

Experimental and theoretical research of three pyridine derivatives as corrosion inhibitors on steel in HCl acid solution

Disrupting the Crystal Growth of Corrosion Byproducts to Stabilize Aqueous Zn Metal Batteries.

There is a key missing point in the research field of zinc metal batteries (ZMBs); that is, no one pays attention to the crystal growth of byproducts. In this paper, from the perspective of crystallography, a method of disturbing the crystal growth of corrosion byproducts is proposed to improve the serious water-related corrosion in ZMBs. In consideration of the thermodynamics and dynamics of crystallization, the corrosion inhibitor (CI) molecules are introduced to envelop the active growth sites of byproduct crystals and increase the surface free energy change (ΔGs), thus leading to a positive free energy change (ΔG) unfavorable for crystal formation and growth. Therefore, the expansion of the crystal lattice (that is, crystal growth) is impeded, resulting in the distortion and inhibition of the byproduct crystal structure, which have been comprehensively validated through density functional theory (DFT) calculations and in situ X-ray diffraction (XRD) measurements. Extensive research is also conducted on various CI compounds with an adjusted number of phosphate groups and carbon chain length. This work innovatively focuses on inhibiting the crystallization process of byproducts, which is of great significance for the study of water-related corrosion, showcasing the significant potential in enhancing the longevity of aqueous batteries.

Corrosion inhibition of D16T aluminum alloy by sodium alginate and zinc acetate composition in neutral chloride-containing environment

Corrosion inhibition of D16T aluminum alloy by sodium alginate and zinc acetate composition in neutral chloride-containing environment

A Dual-Role Additive as a CO2 Hydrate Promoter and a Corrosion Inhibitor: Application in CO2 Capture, Transportation, and Sequestration

A Dual-Role Additive as a CO₂ Hydrate Promoter and a Corrosion Inhibitor: Application in CO₂ Capture, Transportation, and Sequestration

Effects of Corrosion Inhibitors on Antibiotic Resistance in Drinking Water Distribution Systems

Effects of Corrosion Inhibitors on Antibiotic Resistance in Drinking Water Distribution Systems

Sustainable corrosion inhibition approaches for the mitigation of microbiologically influenced corrosion -a systematic review

Sustainable corrosion inhibition approaches for the mitigation of microbiologically influenced corrosion -a systematic review

Self-Healing Engineered Multilayer Coatings for Corrosion Protection of Magnesium Alloy AZ31B.

Nonporous, crack-free hybrid glass coatings have provided excellent corrosion protection to the AZ31B magnesium alloy. However, if a crack develops in the coatings, then corrosion will proliferate at that point. The novelty of this study consists of engineering a bilayer protection system that combines the "barrier" properties of the hybrid glass coatings with the "inhibitor" or "self-healing" effect of an internal layer of mesoporous silica doped with cerium(III) ions. The mesoporous layer was obtained using a sol-gel solution with 1 mol % cerium(III) ions. The inner cerium-doped mesoporous coating has a thickness of 0.25 μm, and the electrochemical characterization through Open circuit potential (OCP) and Electrochemical Impedance Spectroscopy (EIS) indicates a corrosion inhibition process provided by cerium(III) ions triggered by the corrosion. The combination of the Ce-doped and hybrid glass coatings reaches a total thickness of 5.1 μm. The corrosion evaluation through OCP and EIS does not show any evidence of corrosion during the first 575 h of immersion. After this, there are several steps of a sudden drop in potential and subsequent recovery of the previous values, which could be associated with the activation of the corrosion inhibition mechanism provided by the Ce (III) ions. EIS show a maximum impedance module of 106.7 Ohm cm2, a decrease of impedance values and phase angle fluctuations after the potential drops observed, and, then, a recovery of the previous values of impedance and phase angle. This behavior confirms activation of the corrosion inhibition mechanism. Polarization curves shows that the multilayer coating leads to a low current density (∼10-11 A cm-2), around 5 orders of magnitude lower in comparison with the bare substrate. A post-mortem SEM-EDX analysis study, performed on the cracks generated during electrochemical testing, shows the accumulation of cerium as a consequence of the corrosion inhibitory process.

Unveiling the Corrosion Inhibition Mechanism of Thiazole and Benzo[d]thiazole Gemini Surfactants Using Experimental and Theoretical Approaches

Unveiling the Corrosion Inhibition Mechanism of Thiazole and Benzo[d]thiazole Gemini Surfactants Using Experimental and Theoretical Approaches

Comparative Analysis of Cystine and Cysteine as Green Corrosion Inhibitors of Aluminium Alloy AA7075-T6

Cystine and cysteine as green corrosion inhibitors of the 7075 aluminium alloy in 0.1 M NaCl solution were analysed and compared. The inhibitive efficiency of the inhibitors was analysed by applying linear polarization resistance (LPR) and electrochemical impedance spectroscopy (EIS) methods. Different concentrations of both inhibitors in NaCl solution were tested under different temperatures and times to determine the corrosion kinetic and thermodynamic parameters. Optical microscopy (OM) and scanning electron microscopy (SEM) were used for analysis of the aluminium alloy surface before and after the electrochemical measurements. The hydrophilicity of the alloy surface with tested inhibitors was compared by applying contact angle measurements. The results showed that cystine and cysteine are effective corrosion inhibitors, with different characteristics and duration of protection on the tested aluminium alloy. Cysteine showed better efficiency for short-term applications while cystine provided more stable protection over a longer period.

Synergistic inhibition effect of orange peel extract and potassium iodide on corrosion of Q235 steel in hydrochloric acid solution

Synergistic inhibition effect of orange peel extract and potassium iodide on corrosion of Q235 steel in hydrochloric acid solution

Theoretical Evaluation of Urea Derivatives on Fe (110) and Sn (111) Surfaces: DFT and Monte Carlo Simulation Approaches

Present-day theoretical computation methods are quite effective at anticipating how corrosion inhibitors would behave on metal surfaces, conserving time and resources on laboratory testing. The present study aims to predict the inhibitory effectiveness of certain furan derivatives on surfaces of Fe (110) and Sn (111) in acidic media. To compare their fundamental attributes against corrosion as well as their behavior on iron (Fe) and tin (Sn) surfaces in an acid medium, six urea derivatives have been chosen for this purpose: Imidazolidin-2-one (Cpd A), 4-methylimidazolidine-2-one (Cpd B), Tetrahyropyrimidin-2(1H)-one (Cpd C), 1,3-dimethylimidazolidin-2-one (Cpd D), 1,1-diethylurea (Cpd E), 1,3-dimethylurea (Cpd F). The anti-corrosive characteristics of Cpds A - F were generally explored using Density Functional Theory and Monte Carlo simulations. The results indicate that the compounds had low energy gaps, the highest occupied molecular orbital energy, global hardness, as well as ionization energy and high Electron affinity, ELUMO, global softness, and number of transferred electrons, which explained their corrosion inhibition potentials. Electrostatic potential (ESP) and Fukui indices identified the reactive sites with the ability to accept and donate electrons via back-donation to the metal's d-orbital. The Monte Carlo simulation demonstrated a favorable contact between the Fe (110) and Sn (111) surfaces and inhibitory molecules in the acidic medium. In the industrial sectors, these compounds may be secured as corrosion protectors.

Inhibition Mechanism of Corrosion of Aluminium Alloy in Ordinary Portland Cement Paste by Polyaluminium Sulphate

The expansion, cracking and deterioration of properties during utilisation and solidification of municipal solid waste incineration bottom ash are key problems that are caused by the reaction of metallic aluminium in the bottom ash in the highly alkaline environment of hardened Portland cement. In this study, polyaluminium sulphate (PAS) was introduced into ordinary Portland cement (OPC) to inhibit the corrosion of aluminium alloy. The results indicate that PAS successfully inhibited the corrosion of Al in hardened OPC paste, prevented the expansion and cracking, reduced the amount of hydrogen gas release and formed a thinner and dense corrosion layer on the Al plate surface. The mechanism of corrosion inhibition of Al by PAS was the increase of initial Al(OH)4− concentration by hydrolysis, which expanded the pH range of passivation and transformed the porous loose bayerite layer to a dense homogeneous one around the Al plate without modification of the corrosion product (bayerite). The corrosion rate of the Al alloy in hardened OPC paste was reduced by 213 times by the addition of PAS, from 288.30 mm a−1 without PAS addition to 1.35 mm a−1 with PAS addition. This study casts light on the effective inhibition of corrosion of the Al alloy in OPC.