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.

TWO DIPODAL PYRIDIN-PYRAZOL DERIVATIVES AS EFFICIENT INHIBITORS OF MILD STEEL CORROSION IN HCL SOLUTION — PART I: ELECTROCHEMICAL STUDY

2011 ◽  
Vol 18 (06) ◽  
pp. 303-313 ◽  
Author(s):  
M. B. CISSE ◽  
B. ZERGA ◽  
F. El KALAI ◽  
M. EBN TOUHAMI ◽  
M. SFAIRA ◽  
...  
Keyword(s):  
Mild Steel ◽  
Electrochemical Techniques ◽  
Steel Corrosion ◽  
Inhibition Mechanism ◽  
Isotherm Equation ◽  
Mild Steel Corrosion ◽  
Adsorption Processes ◽  
Inhibited Acid ◽  
Hcl Solution ◽  
Methyl Pyridine

The effect of two pyridin-pyrazol derivatives, N-[(3,5-dimethyl-1H-pyrazol)methyl]pyridine-2-amine (TB5) and 5-bromo-N-[(3,5-dimethyl-1H-pyrazol)methyl]pyridine-2-amine (TB6), newly synthesized, on the corrosion of mild steel in 1.0 M HCl was investigated by weight-loss and various electrochemical techniques. Results obtained reveal that these pyridin-pyrazol derivatives perform excellently as corrosion inhibitors for mild steel in hydrochloric solution. Polarization curves showed that both TB5 and TB6 are mixed-type inhibitors in acidic medium. A kinetic study of steel in uninhibited and inhibited acid for TB6 was also achieved to provide suitable investigations on corrosion inhibition mechanism in 1.0 M HCl solution. The effect of concentration and temperature on the inhibiting efficiency has been examined. The thermodynamic parameters for both dissolution and adsorption processes were calculated and discussed for TB6. The adsorption of inhibitor TB6 on the mild steel surface obeys the Langmuir adsorption isotherm equation.

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 Corrosion Inhibition of Mild Steel in 0.5 M H2SO4 Solution by Plant Extract of Annona squamosa

2021 ◽  
Vol 33 (9) ◽  
pp. 2219-2228
Author(s):  
S. Karthikeyan ◽  
S.S. Syed Abuthahir ◽  
A. Samsath Begum ◽  
K. Vijaya
Keyword(s):  
Mild Steel ◽  
Electrochemical Impedance ◽  
Steel Corrosion ◽  
Inhibitory Effect ◽  
Inhibition Mechanism ◽  
H2so4 Solution ◽  
Annona Squamosa ◽  
Mild Steel Corrosion ◽  
Weight Loss Method ◽  
Loss Method

In aqueous solution of 0.5M H2SO4, the Annona Squamosa extract was systematically analyzed to ensure its inhibition mechanism by using potentiodynamics polarization, the weight loss method, and electrochemical impedance spectroscopy (EIS) and its inhibitory effect on mild steel corrosion. For mild steel corrosion in 0.5 M H2SO4 solution, its inhibition efficiency increases and decreases with an increase in its concentration and temperature, respectively. Potentiodynamic polarization analyses revealed that the Annona Squamosa behaves as a cathodic inhibitor. In presence of Annona Squamosa extract in 0.5 M H2SO4 solution, an increase in the activation energy of corrosion leads to a decrease in the rate of mild steel corrosion. On mild steel surfaces, the adsorption behaviour of the extract conformed to the Temkin isotherm, Langmuir isotherm and Arrhenius equation. The EIS results were correlated with the polarization findings. According to atomic force microscopy (AFM) and scanning electron microscopy (SEM), the inhibition of mild steel corrosion proceeds through the adsorption of the extract on the mild steel surface.

Organic nanoparticles of acetohydrazides as novel inhibitors for mild steel corrosion

2018 ◽  
Vol 42 (8) ◽  
pp. 5914-5922 ◽  
Author(s):  
Howida S. Mandour ◽  
Ahmed Abdel Nazeer ◽  
Entesar Al-Hetlani ◽  
Metwally Madkour ◽  
Yasser K. Abdel-Monem
Keyword(s):  
Mild Steel ◽  
Steel Corrosion ◽  
Precipitation Method ◽  
Acidic Media ◽  
Organic Nanoparticles ◽  
Mild Steel Corrosion

Novel organic nanoparticles were successfully prepared using the re-precipitation method and showed superior protection against mild steel corrosion in acidic media.

scholarly journals The Effect of Achyranthes aspera Extracts on Mild Steel Corrosion in Industrial Water Medium

2013 ◽  
Vol 2013 ◽  
pp. 1-9 ◽  
Author(s):  
Chikkur B. Pradeep Kumar ◽  
Kikkeri N. Mohana
Keyword(s):  
Mild Steel ◽  
Electrochemical Impedance ◽  
Electrochemical Techniques ◽  
Steel Corrosion ◽  
Charge Transfer Resistance ◽  
Water Medium ◽  
Industrial Water ◽  
Transfer Resistance ◽  
Achyranthes Aspera ◽  
Eis Measurements

Achyranthes aspera (AA) extracts were studied as corrosion inhibitor for mild steel (MS) in industrial water medium using mass loss and electrochemical techniques. The results of the study revealed that AA extracts inhibit MS corrosion through adsorption process following Langmuir adsorption isotherm model. The protection efficiency increased with increase in inhibitor concentration and decreased with temperature. The electrochemical impedance spectroscopy (EIS) measurements showed that the charge transfer resistance increases with increase in the concentration of AA extracts. The polarization curves obtained indicate that AA extracts act as mixed type of inhibitor. Scanning electron microscopy (SEM) was used to analyze the surface adsorbed film.

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.

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