scholarly journals Electrochemical and Thermodynamic Investigation on Corrosion Inhibition of C38 Steel in 1M Hydrochloric Acid Using the Hydro-Alcoholic Extract of Used Coffee Grounds

2020 ◽  
Vol 2020 ◽  
pp. 1-14 ◽  
Author(s):  
Fatima Bouhlal ◽  
Najoua Labjar ◽  
Farah Abdoun ◽  
Aimad Mazkour ◽  
Malika Serghini-Idrissi ◽  
...  
Keyword(s):  
Steel Surface ◽  
Electrochemical Impedance ◽  
Physical Adsorption ◽  
Steel Corrosion ◽  
Alcoholic Extract ◽  
Coffee Grounds ◽  
Polarization Technique ◽  
Influence Of Temperature On ◽  
C38 Steel ◽  
Hcl Medium

The present work investigates the influence of temperature on C38 steel corrosion in a 1 M HCl medium with and without different concentrations of a hydro-alcoholic extract of used coffee grounds (HECG). The potentiodynamic polarization technique and the electrochemical impedance spectroscopy were performed in temperatures ranging from 293.15 to 323.15 K. It was observed that the inhibition efficiency decreased with increased temperature and inhibitor concentration. The HECG adsorption process on C38 steel surface was found to be spontaneous and obeyed to Langmuir isotherm at all studied temperatures. The associated thermodynamic parameters of adsorption led to suggest the occurrence of physical adsorption of the HECG compounds on the C38 steel surface.

scholarly journals Electrochemically Synthesized Poly(2-Aminobenzenesulphonic Acid) – An Efficient Protection for Carbon Steel Corrosion

2019 ◽  
Vol 35 (2) ◽  
pp. 678-683
Author(s):  
Sini Varghese Cheruvathur ◽  
Joby Thomas Kakkassery ◽  
Vinod Raphael Palayoor ◽  
Binsi M. Paulson ◽  
Ragi Kooliyat
Keyword(s):  
Carbon Steel ◽  
Steel Surface ◽  
Electrochemical Impedance ◽  
Steel Corrosion ◽  
Polymeric Coating ◽  
Spectral Studies ◽  
Protection Efficacy ◽  
Efficient Protection ◽  
Ft Ir ◽  
Hcl Medium

The corrosion protection efficacy of electrochemically synthesized poly(2-aminobenzenesulphonic acid) (P2ABSA) on carbon steel in 1.0 M HCl was investigated by electrochemical impedance spectroscopy, Tafel polarisation, scanning electron microscopy (SEM) and FT-IR spectral studies. The polymeric coating was prepared on the steel surface using cyclic voltammetry. Investigations established that P2ABSA effectively prevent the metal dissolution in HCl medium. Polarisation studies revealed that this polymer hinder both anodic and cathodic process of corrosion appreciably. The structures of the chemically and electrochemically synthesised polymers were compared using IR spectroscopy. Morphology of the steel surface confirmed the intact response of P2ABSA on steel surface treated with HCl.

scholarly journals Surface Protection of Steel by Adsorption of Milletia Pinnata Extract

2016 ◽  
Vol 13 (2) ◽  
pp. 101-105
Author(s):  
Monikandon Sukumaran ◽  
Kesavan Devarayan
Keyword(s):  
Weight Loss ◽  
Steel Surface ◽  
Inhibition Efficiency ◽  
Physical Adsorption ◽  
Ethanolic Extract ◽  
Steel Corrosion ◽  
Langmuir Adsorption Isotherm ◽  
Surface Protection ◽  
Langmuir Adsorption ◽  
Thermochemical Parameters

Steel corrosion inhibition in acidic and alkaline medium by ethanolic extract of Milletia pinnata is described in this study. The inhibitive behavior of the inhibitor is evaluated by weight loss measurements, adsorption isotherms, and thermochemical parameters. The inhibitor exhibited a maximum of 87% and 90.5% inhibition efficiency against steel corrosion in 0.5 M NaOH and 1.0 M H2SO4, respectively. The weight loss linearly fit to Langmuir adsorption isotherm with correlation coefficient value close to unity. The thermochemical parameters indicated for predominant physical adsorption of the inhibitor molecules on the steel surface.

Studying effect of plantain extract behavior as an eco-friendly corrosion inhibitor on the mild steel in 1 M HCl solution

2018 ◽  
Vol 65 (3) ◽  
pp. 310-316 ◽  
Author(s):  
Moosa Es’haghi ◽  
Amirhossein Amjad ◽  
Sorayya Asghari ◽  
Ali Lotfi
Keyword(s):  
Mild Steel ◽  
Electrochemical Impedance ◽  
Physical Adsorption ◽  
Steel Corrosion ◽  
Sample Surface ◽  
Green Inhibitor ◽  
Content Type ◽  
Inhibition Effect ◽  
Mild Steel Corrosion ◽  
Hcl Solution

Purpose Corrosion inhibitors most commonly are used in the acid pickling, cleaning and etching solutions. Plant extracts as rich and cheap resources are among the eco-friendly inhibitors. This study aims to investigate the inhibition effect of plantain extract on mild steel corrosion. Design/methodology/approach The inhibition influence of plantain extract on mild steel corrosion was investigated through Tafel polarization, electrochemical impedance spectroscopy and weight loss techniques in 1 M HCl solution. Furthermore, the sample surface morphology was verified by scanning electron microscopy. Findings The inhibition effect of the plantain extract was increased with the increase in the inhibitor concentration due to its adsorption on the surface of samples. The adsorption mechanism of the plantain extract on mild steel is physical adsorption and follows Langmuir isotherm. Originality/value The results obtained from different methods showed that the plantain extract has good inhibition performance on corrosion mild steel in 1 M HCl solution as a green inhibitor.

scholarly journals Tussilago Farfara Extract (TFE) as Green Corrosion Inhibitor for Aluminum in Hydrochloric Acid Solution

2020 ◽  
Vol 10 (6) ◽  
pp. 7023-7041
Keyword(s):  
Electrochemical Impedance ◽  
Mass Reduction ◽  
Adsorption Model ◽  
Tafel Polarization ◽  
Transfer Mode ◽  
Reduction Techniques ◽  
Green Corrosion Inhibitor ◽  
Tussilago Farfara ◽  
Influence Of Temperature On ◽  
Hcl Medium

The dissolution of aluminum in 2 M HCl medium in the absence and presence of Tussilago Farfara Extract (TFE) was examined utilizing Tafel polarization (TP), electrochemical impedance spectroscopy (EIS), electrochemical frequency modulation (EFM), gasometry and mass reduction techniques. The outcomes of these procedures illustrated that the inhibiting effect of this inhibitor depends on its concentration and chemical composition. The inhibitive impact of TFE illustrated the blocking of the Al surface by adsorption of its components through the reacted atoms contained in its molecules. The adsorption model was obeyed to Langmuir isotherm. The influence of temperature on the dissolution rate in the non-existence and existence of TFE was observed. Tafel polarization indicated that TFE acts as a mixed kind inhibitor. Impedance outcomes illustrated that the dissolution of Al is monitored by charge transfer mode at all concentrations of the extract. Varied surface examinations like XPS, FTIR, and AFM were checked to affirm the presence of the defensive film on the Al surface. All outcomes measured from all procedures are in perfect conformity.

scholarly journals Use of a Gemini-Surfactant Synthesized from the Mango Seed Oil as a CO2-Corrosion Inhibitor for X-120 Steel

Materials ◽  
2021 ◽  
Vol 14 (15) ◽  
pp. 4206
Author(s):  
E. Sanchez-Salazar ◽  
E. Vazquez-Velez ◽  
J. Uruchurtu ◽  
J. Porcayo-Calderon ◽  
M. Casales ◽  
...  
Keyword(s):  
Corrosion Inhibitor ◽  
Steel Surface ◽  
Gemini Surfactant ◽  
Electrochemical Impedance ◽  
Pipeline Steel ◽  
Steel Corrosion ◽  
Co2 Corrosion ◽  
Mango Seed ◽  
Spectroscopy Studies ◽  
Corrosion Of Steel

A gemini surfactant imidazoline type, namely N-(3-(2-fatty-4,5-dihydro-1H-imidazol-1-yl) propyl) fatty amide, has been obtained from the fatty acids contained in the mango seed and used as a CO2 corrosion inhibitor for API X-120 pipeline steel. Employed techniques involved potentiodynamic polarization curves, linear polarization resistance, and electrochemical impedance spectroscopy. These tests were supported by detailed scanning electronic microscopy (SEM) and Raman spectroscopy studies. It was found that obtained gemini surfactant greatly decreases the steel corrosion rate by retarding both anodic and cathodic electrochemical reactions, with an efficiency that increases with an increase in its concentration. Gemini surfactant inhibits the corrosion of steel by the adsorption mechanism, and it is adsorbed on to the steel surface according to a Langmuir model in a chemical type of adsorption. SEM and Raman results shown the presence of the inhibitor on the steel surface.

Experimental and theoretical approach to exploit the corrosion inhibition activity of 3-formyl chromone derivatives on mild steel in 1 m H2SO4

2017 ◽  
Vol 35 (2) ◽  
pp. 95-110 ◽  
Author(s):  
Rajeev Kumar ◽  
Savita Chahal ◽  
Shefali Dahiya ◽  
Naveen Dahiya ◽  
Sumit Kumar ◽  
...  
Keyword(s):  
Mild Steel ◽  
Mass Loss ◽  
Electrochemical Impedance ◽  
Steel Corrosion ◽  
Inhibition Mechanism ◽  
Mild Steel Corrosion ◽  
Polarization Study ◽  
Polarization Technique ◽  
Different Temperatures ◽  
Loss Method

Abstract3-Formyl chromone (3FC) derivatives, viz. 5-methoxy-3FC (5-Me-3FC), 6-hydroxy-3FC (6-OH-3FC), and 7-hydroxy-3FC (7-OH-3FC), were studied for the inhibition of mild steel corrosion in 1 m H2SO4 at different temperatures and concentrations. The inhibition was studied using mass loss method, polarization technique, electrochemical impedance spectroscopy (EIS), scanning electron microscopy, and quantum chemical calculations. The results from mass loss, potentiodynamic polarization, and EIS showed that inhibition efficiency (IE) increased with gradual increments in concentration of 3FC derivatives. The polarization study revealed that these compounds act as mixed-type inhibitors and Langmuir adsorption isotherm is fitted well for adsorption behavior. The order of IE provided by all the three compounds is 7-OH-3FC≈6-OH-3FC>5-Me-3FC and lies in the range of 85%–95%. A proposed inhibition mechanism has been further described, including the support from all the experimental and theoretical techniques.

scholarly journals Experimental and theoretical study on the corrosion inhibitor potential of quinazoline derivative for mild steel in hydrochloric acid solution

2020 ◽  
Author(s):  
Fidelis Ebunta Abeng ◽  
Valentine Anadebe ◽  
Patience Yake Nkom ◽  
Enyinda Goodluck Kamalu ◽  
Kelechi J. Uwakwe
Keyword(s):  
Mild Steel ◽  
Corrosion Inhibition ◽  
Potentiodynamic Polarization ◽  
Metal Surfaces ◽  
Steel Surface ◽  
Physical Adsorption ◽  
Steel Corrosion ◽  
Quinazoline Derivative ◽  
Mild Steel Surface ◽  
Mild Steel Corrosion

Interaction of metal surfaces with organic molecules has a significant role in corrosion inhibition of metals and alloys. More clarification, from both experimental and computa­tional view is needed in describing the application of inhibitors for protection of metal surfaces. In this study, the surface adsorption and corrosion inhibition behavior of metol­azone, a quinazoline derivative, on mild steel in 0.02, 0.04, 0.06, and 0.08 M HCl solutions were investigated. Weight loss, potentiodynamic polarization and electrochemical impe­dance spectroscopy techniques were used. The optimum inhibition efficiencies of 75, 82 and 83 % were found by these three techniques at the optimum inhibitor concentration of 500 mg/L and 303 K. Scanning electron microscopy (SEM) was used to confirm adsorption of quinazoline derivative on the surface of the mild steel. Computational simulations were additionally used to give insights into the interaction between quinazoline inhibitor and mild steel surface. Thermodynamic parameters of mild steel corrosion showed that quinazoline derivative functions as an effective anti-corrosive agent that slows down corrosion process. Potentiodynamic polarization results revealed a mixed-type inhibitor, while the result of the adsorption study suggests that adsorption of the inhibitor on the mild steel surface obeys the physical adsorption mechanism and follows Langmuir adsorption isotherm model.  

Effect of N-cetyl-N,N,N-trimethylammonium bromide and orthophenylenediamine on the corrosion inhibition of carbon steel in 1 mol/L HCl

2006 ◽  
Vol 84 (12) ◽  
pp. 1658-1666
Author(s):  
B Ramesh Babu ◽  
A K Parande ◽  
P L Ramasamy
Keyword(s):  
Carbon Steel ◽  
Potentiodynamic Polarization ◽  
Corrosion Inhibitors ◽  
Inhibition Efficiency ◽  
Electrochemical Impedance ◽  
Physical Adsorption ◽  
Steel Corrosion ◽  
Impedance Measurements ◽  
Inhibition Studies ◽  
Scanning Electron

Inhibition studies of N-cetyl-N,N,N-trimethylammonium bromide (CTAB) and orthophenylenediamine (OPD) have shown that they were effective inhibitors of corrosion of carbon steel in HCl. The inhibitive behaviour of OPD with CTAB on the corrosion of carbon steel in 1 mol/L HCl was studied by gravimetric weight loss, potentiodynamic polarization, and electrochemical impedance measurements. Inhibition efficiency (IE) was found to increase with the increase in concentration of CTAB and it was also found that CTAB was effective only when used above a concentration of 100 mmol/L. Furthermore, the addition of 20 mmol/L of OPD to CTAB slightly increased the IE. The adsorption of these compounds on carbon steel in 1 mol/L HCl obeyed Langmuir's adsorption isotherm. These inhibitors reduced the permeation current. The IE was observed as high for 200 mmol/L of CTAB with 20 mmol/L of OPD in all the techniques studied. Scanning electron microscopy clearly showed that the inhibition was due to a polymolecular film formed by the physical adsorption of the inhibitor on the metal surface.Key words: carbon steel, corrosion, inhibitors, impedance, potentiodynamic polarization.

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