scholarly journals Inhibiting Effects of Rabeprazole Sulfide on the Corrosion of Mild Steel in Acidic Chloride Solution

2013 ◽  
Vol 2013 ◽  
pp. 1-9 ◽  
Author(s):  
M. K. Pavithra ◽  
T. V. Venkatesha ◽  
M. K. Punith Kumar
Keyword(s):  
Mild Steel ◽  
Electrochemical Impedance ◽  
Steel Corrosion ◽  
Protection Efficiency ◽  
Langmuir Adsorption ◽  
Kinetic And Thermodynamic Parameters ◽  
Mild Steel Corrosion ◽  
Acidic Chloride Solution ◽  
Acidic Chloride ◽  
Mixed Type Inhibitor

The corrosion inhibition effect of Rabeprazole sulfide (RS) on mild steel in 1 M hydrochloric acid (HCl) was investigated using weight loss, potentiodynamic polarization, electrochemical impedance spectroscopy (EIS), and chronoamperometric measurements. Protection efficiency of RS increases with the concentration and decreases with the rise in temperature. Adsorption of RS on mild steel surface in 1 M HCl follows Langmuir adsorption isotherm. The kinetic and thermodynamic parameters governing the adsorption process were calculated and discussed. The polarization results suggest that RS performed as an excellent mixed-type inhibitor for mild steel corrosion in 1 M HCl.

Corrosion Inhibition of Mild Steel by Benzotriazoliumionic Liquid in Hydrochloric Acid

2011 ◽  
Vol 239-242 ◽  
pp. 1409-1413
Author(s):  
Hong Mei Wang ◽  
Ke Long Huang ◽  
Zhi Ping Zhu
Keyword(s):  
Mild Steel ◽  
Corrosion Inhibition ◽  
Potentiodynamic Polarization ◽  
Inhibition Efficiency ◽  
Electrochemical Impedance ◽  
Steel Corrosion ◽  
Polarization Data ◽  
Impedance Measurements ◽  
Mild Steel Corrosion ◽  
Mixed Type Inhibitor

The inhibiting behavior of 1-ethyl-3-butylbenzotriazolium ionic liquids，[C2Bt][Br] ,on mild steel corrosion in 5 wt.% HCl as corroding solution was investigated using weight loss，potentiodynamic polarization and electrochemical impedance measurements. The obtained results indicated that [C2Bt][Br] is a good inhibitor for the mild steel in 5 wt.% HCl solution. The inhibition efficiency increased with an increase of inhibitive concentration. Potentiodynamic polarization data indicated that the [C2Bt][Br] acted essentially as a mixed-type inhibitor. The electrochemical impedance study showed that corrosion inhibition took place by adsorption.

scholarly journals Mitigation of Mild Steel Corrosion in Acidic Solution Using Inhibitor

2011 ◽  
Vol 8 (s1) ◽  
pp. S53-S60 ◽  
Author(s):  
M. Vishnudevan
Keyword(s):  
Mild Steel ◽  
Sodium Benzoate ◽  
Inhibition Efficiency ◽  
Acidic Solution ◽  
Electrochemical Impedance ◽  
Steel Corrosion ◽  
Trisodium Citrate ◽  
Tafel Polarization ◽  
Mild Steel Corrosion ◽  
Maximum Inhibition

The inhibition efficiency of mild steel corrosion in HCl acidic solution containing various concentrations of mixed inhibitors were evaluated by conducting Tafel polarization and electrochemical impedance studies. The mixed inhibitors used in this present investigation were trisodium citrate and sodium benzoate. In this present investigation 0.01 N to 0.1 N concentrations of HCl was used at 30°C. Sodium benzoate present in the mixed inhibitive system enhanced the inhibition efficiency through chemisorptions. The maximum inhibition efficiency ( 95.4%) was obtained for the mixed inhibitive system containing 0.05 M citrate and 0.5 M benzoate in 0.1 N HCl.

scholarly journals Staminate Flower of Cocos Nucifera as Green Inhibitor for Mild Steel in HCl Medium

2012 ◽  
Vol 9 (3) ◽  
pp. 1632-1644 ◽  
Author(s):  
R. Rajalakshmi ◽  
A. S. Safina
Keyword(s):  
Weight Loss ◽  
Mild Steel ◽  
Cocos Nucifera ◽  
Staminate Flower ◽  
Steel Corrosion ◽  
Green Inhibitor ◽  
Flower Extract ◽  
Mild Steel Corrosion ◽  
Hcl Medium ◽  
Mixed Type Inhibitor

Corrosion control methods, especially the use of inhibitors, have gained monumental importance in the present scenario of expunging corrosion and the quest for eco-friendly reasons continues. To arrive at an inexpensive non-toxic, eco-friendly inhibitor formulations the present study on the use of Staminate Flower extract of Cocos Nucifera has been carried out by the classical weight loss measurements and electrochemical polarization measurements. The acid extract could bring out a maximum of 97.3% inhibition of mild steel corrosion in 1M HCl. Thermodynamic parameters of the corrosion process were calculated from temperature study. The adsorptive behaviour of Staminate Flower extract in acid solution may be approximated both by Langmuir and Temkin type isotherms. The results obtained by Tafel, Linear polarization resistance, and impedance spectroscopy have been correlated with the classical weight loss measurements. Values of Tafel constant ba and bc confirmed that the Staminate Flower extract acts like mixed type inhibitor. Examination of the surface of the metal in the presence of the inhibitor confirmed the deposition of inhibitor on the metal surface. The Staminate Flower extract in HCl medium efficiently inhibits the corrosion and proved to be zero cost inhibitor, eco-friendly, non-toxic, and highly economical.

scholarly journals The Inhibition of Mild Steel Corrosion in Sulfuric Acid by New Dapsone Derivatives

2014 ◽  
Vol 10 (3) ◽  
pp. 2388-2402 ◽  
Author(s):  
M.P. Chakravarthy ◽  
Dr. K. N. Mohana ◽  
C.B. Pradeep Kumar
Keyword(s):  
Mild Steel ◽  
Corrosion Inhibitors ◽  
Electrochemical Impedance ◽  
Steel Corrosion ◽  
Tafel Polarization ◽  
New Class ◽  
Mild Steel Corrosion ◽  
Langmuir Isotherm Model ◽  
Polarization Studies ◽  
Corrosion Inhibition Efficiency

Dapsone derivatives Viz., 4, 4’-sulfonylbis(N-((1H-pyrrol-2-yl)methylene)aniline) (SBPMA) and 2-dimethylamino-5-[(4-{4-[(4-dimethylamino-benzylidene)-amino]-benzenesulfonyl}-phenylimino)-methyl]-benzene (DBBPB), a new class of corrosion inhibitors have been synthesized and their corrosion inhibition efficiency on mild steel in 0.5 M H2SO4 was investigated by mass loss,  Tafel polarization and AC impedance measurements. Potentiodynamic polarization studies showed that, these compounds behave as mixed type of corrosion inhibitors. The adsorption process was found to obey Langmuir isotherm model. Electrochemical impedance spectroscopy (EIS) studies revealed that polarization resistance (RP) increases and double layer capacitance (Cdl) decreases as the concentration of the inhibitors increases. Various thermodynamic parameters for the adsorption of inhibitors on mild steel were computed and discussed. FTIR, EDX and SEM analyses were performed to study the film persistency of the inhibitors.

scholarly journals 3-Formylindole-4-aminobenzoic Acid: A Potential Corrosion Inhibitor for Mild Steel and Copper in Hydrochloric Acid Media

2012 ◽  
Vol 2012 ◽  
pp. 1-9 ◽  
Author(s):  
Aby Paul ◽  
Joby Thomas K. ◽  
Vinod P. Raphael ◽  
K. S. Shaju
Keyword(s):  
Mild Steel ◽  
Electrochemical Impedance ◽  
Aminobenzoic Acid ◽  
Acid Media ◽  
Langmuir Adsorption ◽  
Low Concentrations ◽  
Polarization Studies ◽  
Hydrochloric Acid Media ◽  
Hcl Medium ◽  
Mixed Type Inhibitor

The corrosion inhibition efficiencies of Schiff base 3-formylindole-4-aminobenzoic acid (3FI4ABA) on mild steel (MS) and copper in 1.0 M HCl solution have been investigated using weight loss measurements, electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization studies. The results show that inhibition efficiencies on both metals increase with increasing the concentration of the inhibitor. 3FI4ABA exhibited comparatively good inhibition towards mild steel in HCl medium even at low concentrations. The adsorption of inhibitor on the surfaces of the corroding metal mild steel and copper obeys the Langmuir isotherm. Polarization studies revealed that 3FI4ABA acts as a mixed-type inhibitor. Thermodynamic parameters (, ) were calculated using the Langmuir adsorption isotherm.

scholarly journals EFFECT OF ANION GROUPS ON CORROSION INHIBITION BEHAVIOURS OF VIETNAM ORANGE PEEL ESSENTIAL OIL FOR MILD STEEL IN THE ACIDIC MEDIA

2018 ◽  
Vol 55 (5B) ◽  
pp. 103
Author(s):  
Bui Thi Thanh Huyen
Keyword(s):  
Essential Oil ◽  
Mild Steel ◽  
Electrochemical Impedance ◽  
Electrochemical Techniques ◽  
Orange Peel ◽  
Steel Corrosion ◽  
Inhibition Mechanism ◽  
Acidic Media ◽  
Mild Steel Corrosion ◽  
Potentiodynamic Electrochemical Impedance Spectroscopy

This paper deals with the effect of anion groups (SO42- and Cl-) on inhibition behaviours of Vietnam orange peel essential oil (OPE) for corrosion process of mild steel in acidic media. The electrochemical techniques (potentiodynamic, electrochemical impedance spectroscopy (EIS)), weight loss and scanning electron microscopy (SEM) analyses are used in this study. The results show that anion groups do not affect the inhibition mechanism of OPE. The OPE ­behaves as mixed inhibitor for mild steel corrosion in both 1N HCl and H2SO4 acid. The inhibition efficiency of OPE in 1N HCl is greater than that in 1N H2SO4 which implies that the adsorption of the inhibitor is influenced by the nature of anions in acidic solutions. Moreover, the OPE inhibits both general and pitting corrosion for mild steel in the acidic media. 

Inhibition of Steel Corrosion in Sulfuric Acid Solution by 1,10-Phenanthroline, para-Aminobenzoate and their Corresponding Manganese Complex

2019 ◽  
Vol 233 (11) ◽  
pp. 1553-1569 ◽  
Author(s):  
Rola N. Tabesh ◽  
Ashraf Moustafa Abdel-Gaber ◽  
Hassan H. Hammud ◽  
Rami Al-Oweini
Keyword(s):  
Mild Steel ◽  
Corrosion Inhibition ◽  
Electrochemical Impedance ◽  
Activation Parameters ◽  
Steel Corrosion ◽  
Inhibition Mechanism ◽  
Acidic Solutions ◽  
Mild Steel Corrosion ◽  
Uv Visible ◽  
Adsorptive Properties

Abstract The ligands 1,10-phenanthroline, (P) and para-aminobenzoate, (B); as well as their corresponding MnPB complex [bis-(dimanganese di-μ-paraaminobenzoate dichloro diphenanthroline)] have been investigated as inhibitors of mild steel corrosion in H2SO4 (0.5 M) solutions via potentiodynamic and electrochemical impedance spectroscopy techniques. Stability of the prepared complex was examined by UV-visible spectroscopy. The corrosion inhibition, thermodynamics, and adsorptive properties obtained have shown that MnPB complex has remarkable effects in the acidic solutions. Theoretical fitting of different adsorption isotherms such as Langmuir, Flory–Huggins, and the kinetic-thermodynamic models were tested and the thermodynamic activation parameters were calculated. The data revealed that the corrosion inhibition mechanism of mild steel in acidic solutions by the MnPB complex goes via physicochemical adsorption.

Comparative study of 1,2,3-triazole derivatives as corrosion inhibitors of mild steel in sulphuric acid solution

2019 ◽  
Vol 66 (5) ◽  
pp. 544-555 ◽  
Author(s):  
Ilham Elazhary ◽  
My Rachid Laamari ◽  
Aziz Boutouil ◽  
Lahoucine Bahsis ◽  
Mohammadine El Haddad ◽  
...  
Keyword(s):  
Mild Steel ◽  
Electrochemical Impedance ◽  
Steel Corrosion ◽  
Sulphuric Acid Solution ◽  
Frontier Molecular Orbital ◽  
Effect Of Temperature ◽  
Orbital Theory ◽  
Content Type ◽  
Mild Steel Corrosion ◽  
The Difference

Purpose This paper aims to study the corrosion inhibition of Methyl 2-(benzamido)-2-(4-phenyl-1H-1,2,3-triazol-1-yl) acetate (MBPTA) and Methyl 2-(benzamido)-2-(4-p-tolyl-1H-1,2,3-triazol-1-yl) acetate (MBTTA) in 1 M H2SO4 solution at 25 °C. Design/methodology/approach The authors have used weight loss measurements, electrochemical impedance spectroscopy (EIS), potentiodynamic polarization, FT-IR, quantum chemical calculations and scanning electron microscopy (SEM) techniques. Findings The polarization measurements indicate that both compounds are mixed type inhibitors, and that MBTTA is more effective than MBPTA. The effect of temperature on the corrosion behavior using optimal concentration of MBTTA and MBPTA was studied in the temperature range 298-328 K. SEM was used to examine the morphology of the metal surface. Thermodynamic parameters were calculated and discussed. Monte Carlo simulations were applied to lookup for the most stalls configuration and adsorption energy for the interaction of inhibitors on Fe (1 1 1) interface. The difference in inhibition efficiencies between the two organic inhibitors can be clearly explained in terms of frontier molecular orbital theory. Originality/value The authors report on the comparative inhibiting effect of two new 1,4-disubstituted 1,2,3-triazoles, namely Methyl 2-(benzamido)-2-(4-phenyl-1H-1,2,3-triazol-1-yl) acetate (MBPTA) and Methyl 2-(benzamido)-2-(4-p-tolyl-1H-1, 2, 3-triazol-1-yl) acetate (MBTTA) on mild steel corrosion in 1 M H2SO4 solution.

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