scholarly journals Evaluation of vegetables residues as corrosion inhibitors

2021 ◽  
Vol 10 (8) ◽  
pp. e28710817409
Author(s):  
Lhaira Souza Barreto ◽  
Thássia Félix de Almeida ◽  
André de Mendonça Santos ◽  
Miriam Sanae Tokumoto ◽  
Fernando Cotting ◽  
...  
Keyword(s):  
Carbon Steel ◽  
Electrochemical Impedance ◽  
Morphological Characterization ◽  
Garlic Extract ◽  
Sem Images ◽  
Inhibiting Effect ◽  
Carbon Steel Surface ◽  
The Comparative Study ◽  
Peel Extract ◽  
Garlic Peel

This work investigates the use of (Allium sativum L.) garlic peel extract, and (Theobroma L) cacao peel, as well as their synergy as a corrosion inhibitor for carbon steel in 0.5 mol.L-1 hydrochloric acid solution. The comparative study was performed in 1.11 g.L-1 of extract. The investigation was carried out using Fourier transform infrared spectroscopy (FTIR), electrochemical impedance spectroscopy (EIS), gravimetric techniques and scanning electron microscopy (SEM) as chemical, electrochemical and morphological characterization techniques, respectively.  Gravimetric tests results showed a reduction in the corrosion rate of the extracts, with 90.7% efficiency for garlic extract and 89% for cacao extract, however, the mixture of the compounds presented an inhibition superior to 98%, showing the great synergism between the studied species. While the EIS results showed a higher impedance module value for cacao extract compared to garlic extract. Chemical analysis for extracts of garlic and cacao obtained by FTIR showed the presence of compounds based on sulfur and nitrogen, which are responsible for corrosion inhibiting effect. The SEM images obtained showed the formation of a film which reduces the evaluation of the corrosive process. Then, it is possible to conclude, that the carbon steel surface immersed in 0.5 mol.L-1 HCl solution with garlic peel extracts or cacao peel extracts or both, presents a corrosion inhibiting effect.

Monosaccharide Derivatives as Eco-Friendly Corrosion Inhibitors for Carbon Steel in Neutral and Hydrochloric Acid Media

2020 ◽  
pp. 84-99
Author(s):  
Mohamed Rbaa ◽  
Loubna Lakhrissi ◽  
Younes Lakhrissi ◽  
Parul Dohare ◽  
Brahim Lakhrissi
Keyword(s):  
Electrochemical Impedance Spectroscopy ◽  
Carbon Steel ◽  
Corrosion Inhibitors ◽  
Electrochemical Impedance ◽  
Inhibiting Activity ◽  
Acid Media ◽  
Inhibiting Effect ◽  
The Comparative Study ◽  
Hydrochloric Acid Media ◽  
Derivatives Of

In this chapter, the authors present a synthesis of some works carried out within the framework of the study of the corrosion inhibiting activity of a set of monosaccharide derivatives as new biodegradable, nontoxic corrosion inhibitors, and respectful of the environment. The comparative study that they present reveals the existence of more than 20 compounds derivatives of monosaccharide used as corrosion inhibitors in neutral and acidic mediums, and which have given rise to very good corrosion inhibiting efficiencies. These studies of the corrosion inhibiting effect were studied using potentiodynamic polarization curves and electrochemical impedance spectroscopy methods.

Some Anionic Surfactants as Corrosion Inhibitors for Carbon Steel in Hydrochloric Acid Solution

2018 ◽  
Vol 786 ◽  
pp. 134-148 ◽  
Author(s):  
Rania Assem ◽  
A.S. Fouda ◽  
A.A. Ibrahim ◽  
M. Saadawy
Keyword(s):  
Carbon Steel ◽  
Hydrochloric Acid ◽  
Acid Solution ◽  
Hydrochloric Acid Solution ◽  
Anionic Surfactants ◽  
Electrochemical Impedance ◽  
Charge Transfer Resistance ◽  
Polarization Data ◽  
Transfer Resistance ◽  
Carbon Steel Surface

The corrosion inhibition effect of some anionic surfactants (Diisononyl phthalate (A), N-oleyl-1, 3-propane –diamine (B), and Sodium lauryl sulphate (C)) on the corrosion of carbon steel in 1M hydrochloric acid solution were studied by chemical method (weight loss) and electrochemical methods (potentiodynamic polarization and electrochemical impedance spectroscopy (EIS). From the results, it was clear that these surfactants are good inhibitors for corrosion of carbon steel in 1M HCl solution. Their inhibition depends mainly on their concentrations and temperature of solution. Polarization data revealed that these surfactants act as mixed type inhibitors. The surfactants adsorptions were found to follow Langmuir’s adsorption isotherm. The thermodynamic parameters of activation and adsorption were calculated and discussed. Adsorption of used surfactants led to a reduction in the double layer capacitance (Cdl) and an increase in the charge transfer resistance (Rct). All measurements used confirmed the adsorption of the surfactants used on carbon steel surface. Confirmation of these various independent techniques proved validity of the obtained data.

scholarly journals Corrosion of Carbon Steel in Artificial Geothermal Brine: Influence of Carbon Dioxide at 70 °C and 150 °C

Materials ◽  
2019 ◽  
Vol 12 (22) ◽  
pp. 3801 ◽  
Author(s):  
Gabriela Aristia ◽  
Le Quynh Hoa ◽  
Ralph Bäßler
Keyword(s):  
Carbon Dioxide ◽  
Carbon Steel ◽  
Temperature Effect ◽  
Electrochemical Impedance ◽  
Corrosion Products ◽  
Localized Corrosion ◽  
Corrosion Mechanism ◽  
Sem Images ◽  
Geothermal Brine ◽  
Corrosive Effect

This study focuses on the corrosion mechanism of carbon steel exposed to an artificial geothermal brine influenced by carbon dioxide (CO2) gas. The tested brine simulates a geothermal source in Sibayak, Indonesia, containing 1500 mg/L of Cl−, 20 mg/L of SO42−, and 15 mg/L of HCO3− with pH 4. To reveal the temperature effect on the corrosion behavior of carbon steel, exposure and electrochemical tests were carried out at 70 °C and 150 °C. Surface analysis of corroded specimens showed localized corrosion at both temperatures, despite the formation of corrosion products on the surface. After 7 days at 150 °C, SEM images showed the formation of an adherent, dense, and crystalline FeCO3 layer. Whereas at 70 °C, the corrosion products consisted of chukanovite (Fe2(OH)2CO3) and siderite (FeCO3), which are less dense and less protective than that at 150 °C. Control experiments under Ar-environment were used to investigate the corrosive effect of CO2. Free corrosion potential (Ecorr) and electrochemical impedance spectroscopy (EIS) confirm that at both temperatures, the corrosive effect of CO2 was more significant compared to that measured in the Ar-containing solution. In terms of temperature effect, carbon steel remained active at 70 °C, while at 150 °C, it became passive due to the FeCO3 formation. These results suggest that carbon steel is more susceptible to corrosion at the near ground surface of a geothermal well, whereas at a deeper well with a higher temperature, there is a possible risk of scaling (FeCO3 layer). A longer exposure test at 150 °C with a stagnant solution for 28 days, however, showed the unstable FeCO3 layer and therefore a deeper localized corrosion compared to that of seven-day exposed specimens.

Inhibitory action of aqueous garlic peel extract on the corrosion of carbon steel in HCl solution

2012 ◽  
Vol 65 ◽  
pp. 360-366 ◽  
Author(s):  
Simone Santana de Assunção Araújo Pereira ◽  
Michelle Macedo Pêgas ◽  
Tatiana López Fernández ◽  
Mariana Magalhães ◽  
Thaís Gadiole Schöntag ◽  
...  
Keyword(s):  
Carbon Steel ◽  
Inhibitory Action ◽  
Peel Extract ◽  
Garlic Peel ◽  
Hcl Solution

scholarly journals Some Thiophene Derivatives as Corrosion Inhibitors for Carbon Steel in Hydrochloric Acid

2014 ◽  
Vol 2014 ◽  
pp. 1-15 ◽  
Author(s):  
A. S. Fouda ◽  
A. A. Attia ◽  
A. A. Negm
Keyword(s):  
Weight Loss ◽  
Carbon Steel ◽  
Potentiodynamic Polarization ◽  
Steel Surface ◽  
Electrochemical Impedance ◽  
Electrochemical Techniques ◽  
Effect Of Temperature ◽  
Carbon Steel Surface ◽  
Weight Loss Method ◽  
Thiophene Derivatives

Corrosion inhibitive performance of some thiophene derivatives during the acidic corrosion of carbon steel surface in 1 M HCl was investigated by chemical technique (weight loss) and electrochemical techniques (potentiodynamic polarization, electrochemical frequency modulation, and electrochemical impedance spectroscopy). The effect of temperature on the corrosion rate was investigated by the weight loss method, and some thermodynamic parameters for corrosion and adsorption processes were determined and discussed. The results show that the inhibition efficiency increased with the increase in inhibitor concentration and temperature. The adsorption of thiophene derivatives on the carbon steel surface obeys Langmuir adsorption isotherm. The obtained results indicated that the investigated compounds are chemically adsorbed on the steel surface. Potentiodynamic polarization studies showed that these compounds are mixed-type inhibitors and the results obtained from the techniques are in good agreement.

scholarly journals Corrosion inhibition, surface adsorption and computational studies of Momordica charantia extract: a sustainable and green approach

2021 ◽  
Vol 3 (1) ◽  
Author(s):  
Rajesh Haldhar ◽  
Dwarika Prasad ◽  
Divya Kamboj ◽  
Savas Kaya ◽  
Omar Dagdag ◽  
...  
Keyword(s):  
Carbon Steel ◽  
Steel Surface ◽  
Electrochemical Impedance ◽  
Spectroscopic Technique ◽  
Momordica Charantia ◽  
Green Approach ◽  
Carbon Steel Surface ◽  
Weight Loss Method ◽  
Loss Method ◽  
Inhibitory Molecules

AbstractThe aerial parts extract of Momordica charantia plant were used for the corrosion resistance of carbon steel in the acidic medium (0.5 M H2SO4) utilizing weight loss method, Tafel and Electrochemical Impedance Spectroscopy. The state of mixed inhibitor adsorption on the carbon steel surface is shown by potentiodynamic polarization. M. charantia achieved the extraordinary inhibition efficiency of 93.51% at 500 mg/L of inhibitor concentration. Scanning electron microscopy and atomic force microscopy were used to know about the thin layer which was formed on the surface of carbon steel for its protection from corrosion and the adsorption of inhibitor was shown by UV–vis. spectroscopic technique. Fourier Transform Infrared Spectroscopy technique confirmed the existence of functional groups and the heteroatoms exhibit in the inhibitor. Adsorbance by the inhibitory molecules on the carbon steel surface followed the Langmuir adsorption isotherm. Hypothetical investigations (computational) showed a very valuable report. All acquired outcomes ensure that M. charantia extract can procedure an effectual preventing layer and restrict the corrosion procedure.

scholarly journals Experimental and computational chemical studies on the corrosion inhibitive properties of carbonitrile compounds for carbon steel in aqueous solutions

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Abd El-Aziz S. Fouda ◽  
Abdelmonem H. El-Askalany ◽  
Ahmed F. S. Molouk ◽  
Niveen S. Elsheikh ◽  
Ashraf S. Abousalem
Keyword(s):  
Carbon Steel ◽  
Photoelectron Spectroscopy ◽  
Electrochemical Impedance ◽  
Electrochemical Techniques ◽  
Adsorption Model ◽  
Hydrochloric Acid Medium ◽  
Chemical Measurements ◽  
Carbon Steel Surface ◽  
Chemical Studies ◽  
Experimental Findings

AbstractThe present work aims to study 6-amino-4-aryl-2-oxo-1-phenyl-1,2-dihydropyridine-3,5-dicarbonitrile derivatives namely: 6-Amino-2-oxo-1,4-diphenyl-1,2-dihydropyridine-3,5-dicarbonitrile (PdC-H), 6-Amino-2-oxo-1-phenyl-4-(p-tolyl)-1,2-dihydropyridine-3,5-dicarbonitrile (PdC-Me) and 6-Amino-4-(4-hydroxyphenyl)-2-oxo-1-phenyl-1,2-dihydropyridine-3,5-dicarbonitrile (PdC-OH) as corrosion inhibitors to provide protection for carbon steel in a molar hydrochloric acid medium. Chemical measurements such as (weight loss) and electrochemical techniques such as (Potentiodynamic polarization, electrochemical impedance spectroscopy, and Electron frequency modulation) were applied to characterize the inhibitory properties of the synthesized derivatives. The adsorption of these derivatives on the carbon steel surface was confirmed by Attenuated Total Refraction Infrared (ATR-IR), Atomic Force Microscope (AFM), and X-ray Photoelectron Spectroscopy (XPS). Our findings revealed that the tested derivatives have corrosion inhibition power, which increased significantly from 75.7 to 91.67% on the addition of KI (PdC-OH:KI = 1:1) to inhibited test solution with PdC-OH derivative at 25 °C. The adsorption process on the metal surface follows the Langmuir adsorption model. XPS analysis showed that the inhibitor layer consists of an iron oxide/hydroxide mixture in which the inhibitor molecules are incorporated. Computational chemical theories such as DFT calculations and Mont Carlo simulation have been performed to correlate the molecular properties of the investigated inhibitors with experimental efficiency. The theoretical speculation by Dmol3 corroborates with the results from the experimental findings.

scholarly journals A Study of N,N-Diethylammonium O,O′-Di(p-methoxyphenyl)dithiophosphate as New Corrosion Inhibitor for Carbon Steel in Hydrochloric Acid Solution

2016 ◽  
Vol 2016 ◽  
pp. 1-8 ◽  
Author(s):  
Chuan Lai ◽  
Bin Xie ◽  
Changlu Liu ◽  
Wan Gou ◽  
Lvshan Zhou ◽  
...  
Keyword(s):  
Carbon Steel ◽  
Hydrochloric Acid ◽  
Corrosion Inhibitor ◽  
Storage Time ◽  
Inhibition Efficiency ◽  
Electrochemical Impedance ◽  
Hydrochloric Acid Concentration ◽  
Carbon Steel Surface ◽  
And Storage ◽  
Mixed Type Inhibitor

N,N-Diethylammonium O,O′-di(p-methoxyphenyl)dithiophosphate (EAPP) as a new corrosion inhibitor was synthesized in the present work. The corrosion inhibition of EAPP in hydrochloric acid for carbon steel was evaluated by potentiodynamic polarization measurements, electrochemical impedance spectroscopy, weight loss measurements, and scanning electron microscopy. The results indicate that the EAPP is mixed type inhibitor, and the adsorption of EAPP on carbon steel surface obeys Langmuir isotherm. In addition, the inhibition efficiency increases with increasing the concentration of inhibitor and decreases with increasing the hydrochloric acid concentration, temperature, and storage time.

scholarly journals The Inhibitive Effect of 2-Phenyl-3-nitroso-imidazo [1, 2-a]pyridine on the Corrosion of Steel in 0.5 M HCl Acid Solution

2010 ◽  
Vol 7 (s1) ◽  
pp. S35-S42 ◽  
Author(s):  
K. Bouhrira ◽  
F. Ouahiba ◽  
D. Zerouali ◽  
B. Hammouti ◽  
M. Zertoubi ◽  
...  
Keyword(s):  
Carbon Steel ◽  
Steel Surface ◽  
Inhibition Efficiency ◽  
Electrochemical Impedance ◽  
Electrochemical Techniques ◽  
Carbon Steel Surface ◽  
Langmuir Isotherm Model ◽  
Corrosion Of Steel ◽  
Good Agreement

The effect of 2-phenyl-3-nitroso-imidazo[1,2-a]pyridine (PNIP) on the corrosion inhibition of carbon-steel in 0.5 M HCl was studied by weight loss and different electrochemical techniques such as electrochemical impedance spectroscopy (EIS), potentiodynamic polarization. The obtained results showed that PNIP effectively reduces the corrosion rate of carbon steel. Inhibition efficiency (E%) increases with inhibitor concentration to attain 88% at 10-3M. Adsorption of that PNIP on the carbon steel surface in 0.5 M HCl follows the Langmuir isotherm model. E% values obtained from various methods used are in good agreement. SEM characterization of the steel surface is made.

scholarly journals New Cyanoacetamide Derivatives as Corrosion Inhibitors for Carbon Steel in Acidic Media

2008 ◽  
Vol 4 (1) ◽  
pp. 323-350 ◽  
Author(s):  
Abdel Aziz Fouda ◽  
A. M. El-desoky ◽  
M. M. Muhtar
Keyword(s):  
Carbon Steel ◽  
Benzoic Acid ◽  
Adsorption Mechanism ◽  
Electrochemical Impedance ◽  
Physical Adsorption ◽  
Effect Of Temperature ◽  
Active Centers ◽  
Carbon Steel Surface ◽  
Freundlich Adsorption Isotherm ◽  
Inhibitive Action

The corrosion behavior of carbon steel  in 1 M HCl solution in the absence and presence of 4-(2-Cyano-7- hydroxy-4-methylene-hepta-2,5-dienoylamino)-benzoic acid (a), 4-[2-Cyano-3-(4-methoxy -phenyl)-acryloylamino]-benzoicacid.(b), 4-(2-Cyano-3-phenyl acryloylamino)-benzoic acid (c) ,4-[3-(4-Chloro-phenyl)-2-cyano-acryloylamino]-benzoic acid(d), was investigated using weight loss , potentiodynamic polarization, electrochemical impedance spectroscopy (EIS) and electrochemical frequency modulation (EFM) techniques. The inhibitive action of the investigated compounds was discussed in terms of blocking the electrode surface by adsorption of the molecules through the active centers contained in their structures. The adsorption of these derivatives on carbon steel surface is consistent with Freundlich adsorption isotherm. The effect of temperature on the rate of corrosion in the absence and presence of these compounds were also studied. Physical adsorption mechanism is proposed from the calculated thermodynamic parameters for all investigated compounds.

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