scholarly journals Evaluation of Corrosion Inhibition of Mild Steel in 1 M Hydrochloric Acid Solution byMollugo cerviana

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
P. Arockiasamy ◽  
X. Queen Rosary Sheela ◽  
G. Thenmozhi ◽  
M. Franco ◽  
J. Wilson Sahayaraj ◽  
...  
Keyword(s):  
Mild Steel ◽  
Corrosion Inhibition ◽  
Plant Extract ◽  
Potentiodynamic Polarization ◽  
Electrochemical Impedance ◽  
Langmuir Adsorption ◽  
Inhibition Concentration ◽  
Corrosion Inhibition Efficiency ◽  
Hcl Solution ◽  
Mixed Type Inhibitor

The inhibiting effect of methanolic extract ofMollugo cervianaplant on the corrosion of mild steel in 1 M HCl solution has been investigated by different techniques like potentiodynamic polarization, electrochemical impedance spectroscopy, and weight loss methods for five different concentrations of plant extract ranging from 25 to 1000 mg/L. The results indicated that the corrosion inhibition efficiency increased on increasing plant extract concentration till 500 mg/L and decreased on further increasing concentration. The extract was a mixed type inhibitor with the optimum inhibition concentration of 500 mg/L in potentiodynamic polarization. The adsorption of the plant extract on the mild steel surface was found to obey Langmuir adsorption isotherm. Surface analysis was also carried out to find out the surface morphology of the mild steel in the presence and in the absence of the inhibitor to find out its efficiency. The obtained results showed that theMollugo cervianaextract acts as a good inhibitor for the corrosion of mild steel in 1 M HCl solution.

Corrosion Inhibition of Mild Steel in 0.5N H2SO4 Solution by Tribulus terrestris (fruit) Extract

2017 ◽  
Vol 33 (1-2) ◽  
pp. 63
Author(s):  
Suchitra Chaudhary ◽  
Rakesh K. Tak ◽  
Rajendra Kumar Duchaniya
Keyword(s):  
Mild Steel ◽  
Corrosion Inhibition ◽  
Inhibition Efficiency ◽  
Adsorption Process ◽  
Electrochemical Impedance ◽  
Tribulus Terrestris ◽  
Alcoholic Extract ◽  
Fruit Extract ◽  
Langmuir Adsorption ◽  
Corrosion Inhibition Efficiency

The corrosion inhibition efficiency of alcoholic extract of fruits of plant <em>Tribulus terrestris</em> for mild steel in 0.5N H<sub>2</sub>SO<sub>4</sub> solution has been studied in relation to concentration of inhibitor by Mass Loss, Potentiodynamic Polarisation and Electrochemical Impedance Spectroscopy methods. The results indicate that <em>Tribulus terrestris</em> fruit extract used in liquid H<sub>2</sub>SO<sub>4</sub> effectively reduces the corrosion rate of mild steel and act as a good corrosion inhibitor. It is also observed that inhibition efficiency increases with inhibitor concentration but it decreases with increase in temperature. The thermodynamic parameters reveal that the inhibition of corrosion is due to adsorption of the inhibitor on the metal surface. The negative free energy values show spontaneity of the adsorption process in accordance with Langmuir adsorption isotherm.

An electrochemical investigation of azole derivative on aluminum in 0.25 M HCl solution using EN and EIS techniques

2017 ◽  
Vol 64 (1) ◽  
pp. 10-22 ◽  
Author(s):  
Bahram Ramezanzadeh ◽  
Milad Mehdipour ◽  
S.Y. Arman ◽  
M. Ramezanzadeh
Keyword(s):  
Corrosion Inhibition ◽  
Potentiodynamic Polarization ◽  
Design Methodology ◽  
Inhibition Efficiency ◽  
Electrochemical Impedance ◽  
Electrochemical Techniques ◽  
Content Type ◽  
Corrosion Inhibition Efficiency ◽  
Azole Derivative ◽  
Hcl Solution

Purpose This study attempts to investigate corrosion inhibition properties of 1H-benzimidazole (B) and 1H-benzotriazole (BTA) on aluminum in 0.25 M HCl solution at different concentrations. Design/methodology/approach To this end, electrochemical techniques including electrochemical noise (EN), electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization were used. Findings Results showed a greater corrosion inhibition efficiency of BTA than B on aluminum in HCl solution. BTA showed greater tendency to adsorption on the metal surface than B because of the inclusion of three nitrogen atoms. Originality/value The novelty of this work is comparing EN data with EIS and potentiodynamic polarization parameters.

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.

Corrosion Inhibition of N,N- diethylammonium O,O′- di (p-chlorophenyl) dithiophosphate for Carbon Steel in HCL Solution

2013 ◽  
Vol 781-784 ◽  
pp. 299-303
Author(s):  
Shu Lan Cai ◽  
Kang Quan Qiao ◽  
Fa Mei Feng
Keyword(s):  
Electrochemical Impedance Spectroscopy ◽  
Carbon Steel ◽  
Corrosion Inhibition ◽  
Mixed Type ◽  
Electrochemical Impedance ◽  
Equivalent Circuit Model ◽  
Inhibition Effect ◽  
Inhibition Process ◽  
Hcl Solution ◽  
Mixed Type Inhibitor

A new corrosion inhibior N,N-diethylammonium O,O-di (p-chlorophenyl) dithiophosphate (EDPDP) has been synthesized and its inhibition effect towards the corrosion of carbon steel in 1.0 molL-1 HCl solution at 25 °C has been investigated by potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) methods. The obtained results show that EDPDP is a excellent inhibitor and the inhibition efficiencies exceed 90 %. The polarization measurements reveal that EDPDP is a mixed type inhibitor and the equivalent circuit model of the corrosion inhibition process is obtained by the analysis of EIS data.

scholarly journals The Corrosion Inhibition Performance of Polyacrylic Acid with Potassium Sodium Tartrate and Zn2+ for Corrosion Control of Mild Steel in Aqueous Solution

2015 ◽  
Vol 61 ◽  
pp. 137-148 ◽  
Author(s):  
V. Dharmalingam ◽  
P. Arockia Sahayaraj ◽  
A. John Amalraj ◽  
R. Shobana ◽  
R. Mohan
Keyword(s):  
Mild Steel ◽  
Corrosion Inhibition ◽  
Polyacrylic Acid ◽  
Potentiodynamic Polarization ◽  
Electrochemical Impedance ◽  
Aqueous Environment ◽  
Protective Film ◽  
Sodium Tartrate ◽  
Potassium Sodium ◽  
Potassium Sodium Tartrate

The goal of studying corrosion process is to find means of minimizing corrosion or prevent it from occurring. The use of inhibitors is one of the most popular methods for corrosion protection. A protective film has been formed on the surface of the mild steel in a neutral aqueous environment using a synergistic mixture of an eco-friendly inhibitor viz., Potassium Sodium Tartrate (SPT) along with polyacrylic acid (PAA) and Zn2+ ions. The inhibiting effect of SPT, PAA and Zn2+ ions have been investigated by gravimetric studies, Potentiodynamic polarization and electrochemical impedance spectroscopy (EIS). The investigations revealed that SPT acts as an excellent synergist in corrosion inhibition. Optimum concentrations of all the three components of the ternary formulation are established by gravimetric studies. Potentiodynamic polarization studies inferred that this mixture functions as a cathodic inhibitor. EIS studies of the metal/solution interface indicated that the surface film is highly protective against the corrosion of mild steel. Surface characterization techniques (FTIR, SEM, AFM) are also used to ascertain the nature of the protective film. The mechanical aspect of corrosion inhibition is proposed.

scholarly journals Newly Synthesized N-Substituted Thiosemicarbazone as a Potential Corrosion Inhibitor for Mild Steel in 1 M HCl

2019 ◽  
Vol 7 (4.14) ◽  
pp. 168
Author(s):  
N Z. Nor Hashim ◽  
K Kassim ◽  
F H. Zaidon
Keyword(s):  
Mild Steel ◽  
Corrosion Inhibitor ◽  
Potentiodynamic Polarization ◽  
Corrosion Inhibitors ◽  
Inhibition Efficiency ◽  
Electrochemical Impedance ◽  
Langmuir Adsorption ◽  
Before And After ◽  
Ft Ir ◽  
L1 And L2

Two N-substituted thiosemicarbazone derivatives namely as 2-(4-chlorobenzylidene)-N-phenylhydrazinecarbothioamide and 2-benzylidene-N-phenylhydrazinecarbothioamide (L1 and L2, respectively) have been tested as corrosion inhibitors on mild steel in 1 M HCl. The ligands were synthesized and investigated using potentiodynamic polarization (PD) and electrochemical impedance spectroscopy (EIS).  The obtained results indicated that inhibition efficiency, (IE, %) L1 increased with increasing inhibitor concentrations which behaved as a good corrosion inhibitor compared to L2. The synthesized ligands were successfully characterized by melting point, elemental analysis (C, H, N, and S), Fourier-transform infrared spectroscopy (FT-IR) and NMR (1H and 13C) spectroscopy. The excellent inhibition effectiveness for both compounds on mild steel before and after immersion in 1 M HCl solution containing 40 ppm of L1 and L2 were also verified by scanning electron microscope (SEM). Based on potentiodynamic polarization results, it can be concluded that all investigated compounds are mixed-type inhibitors and obey the Langmuir adsorption isotherm. 

N-cetyl-N,N,N trimethyl ammonium bromide (CTAB)-stabilized polyaniline: a corrosion inhibitor for mild steel

2018 ◽  
Vol 65 (2) ◽  
pp. 146-151 ◽  
Author(s):  
Mohd Rashid ◽  
Umesh S. Waware ◽  
Afidah A. Rahim ◽  
A.M.S. Hamouda
Keyword(s):  
Mild Steel ◽  
Corrosion Inhibitor ◽  
Corrosion Inhibition ◽  
Potentiodynamic Polarization ◽  
Acidic Medium ◽  
Electrochemical Impedance ◽  
Open Circuit ◽  
High Dispersion ◽  
Ammonium Bromide ◽  
Content Type

Purpose The purpose of this study is to compare the inhibitive effect of polyaniline (PAni) and N-cetyl-N,N,N trimethyl ammonium bromide (CTAB)-stabilized PAni in a hydrochloric acid (HCl) medium. Design/methodology/approach PAni has been deposited potentiodynamically on mild steel in the presence of CTAB as a stabilizing agent to achieve high corrosion inhibition performance by the polymer deposition. The corrosion inhibition studies of CTAB-stabilized PAni inhibitor in 0.1 M HCl acidic solution was carried out by electrochemical methods, namely, open-circuit potential, potentiodynamic polarization and electrochemical impedance spectroscopy technique. Findings The results of electrochemical studies have shown that the CTAB-stabilized PAni inhibitor has higher corrosion efficiency than PAni on mild steel in 0.1 M HCl solution. The maximum per cent efficiency evaluated using the potentiodynamic polarization method is approximately 91.9. Originality/value CTAB-stabilized PAni has never been studied as a corrosion inhibitor for mild steel in an acidic medium. The investigations demonstrate relatively the better corrosion inhibition efficiency and high dispersion of the polymer in the acidic medium.

scholarly journals Corrosion Inhibition of Mild Steel by Poly(butylene succinate)-L-histidine Extended with 1,6-diisocynatohexane Polymer Composite in 1 M HCl

2019 ◽  
Vol 2019 ◽  
pp. 1-12 ◽  
Author(s):  
M. G. Tsoeunyane ◽  
M. E. Makhatha ◽  
O. A. Arotiba
Keyword(s):  
Mild Steel ◽  
Corrosion Inhibition ◽  
Polymer Composite ◽  
Electrochemical Impedance ◽  
Condensation Polymerization ◽  
X Ray Diffraction ◽  
Butylene Succinate ◽  
X Ray ◽  
Atomic Force ◽  
Corrosion Inhibition Efficiency

The ecofriendly poly(butylene succinate) extended with 1,6-diisocynatohexane composted with L-histidine (PBSLH) polymer composite was synthesized by condensation polymerization. The polymer composite was characterized by Fourier transform infrared (FTIR), X-ray diffraction (XRD), and scanning electron microscope (SEM-EDX). The inhibition action of the polymer composite was investigated by conventional weight loss, potentiodynamic polarization, variable amplitude micro (VASP), and electrochemical impedance spectroscopy (EIS). The maximum corrosion inhibition efficiency of 78 % was obtained at concentration level of 600 ppm. The results revealed PBSLH as a mixed type corrosion inhibitor. The thermodynamic and kinetic parameters also revealed adsorption of PBSLH on to mild surface as exothermic and the adsorption was conformed to Langmuir model. The morphology of mild steel coupons was investigated by SEM and atomic force microscope (AFM) and the results showed PBSLH to have inhibited corrosion on mild steel in 1 M HCL.

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.

scholarly journals Synergetic Effect between Phenolic Extracts of Ammi visnaga and Zea mays Formulation on the Corrosion of Mild Steel in 1 M HCl Solution

2021 ◽  
Vol 2021 ◽  
pp. 1-10
Author(s):  
Sarra Aourabi ◽  
Majid Driouch ◽  
Mariya Kadiri ◽  
Noura Achnine ◽  
Mouhcine Sfaira ◽  
...  
Keyword(s):  
Mild Steel ◽  
Steel Surface ◽  
Electrochemical Impedance ◽  
Synergetic Effect ◽  
Equivalent Circuit Model ◽  
Mild Steel Surface ◽  
Ammi Visnaga ◽  
Edx Analyses ◽  
Hcl Solution ◽  
Mixed Type Inhibitor

The synergetic effects between hydroethanolic extracts of A. visnaga HE (AV) and Z. mays hairs HE (ZM) on corrosion of mild steel in 1 M HCl solution was investigated at 298 K by two techniques: potentiodynamic polarization (PP) methods (Tafel and Stern & Geary) and electrochemical impedance spectroscopy (EIS). The mixture of HE (AV)/HE (ZM) acted as an efficient corrosion inhibitor and its inhibition efficiency increased with concentration up to 96.55% at 0.01 gL−1 HE (AV)/0.2 gL−1 HE (ZM). The polarization curves revealed that the mixture acted as a mixed-type inhibitor, with anodic predominant action. The EIS studies were fitted by the (Rs + CPEdl)/(Rct + CPEf/Rf) equivalent circuit model. The kinetic parameters were in favor of a physisorption character of adsorption of HE (AV)/HE (ZM) components onto the mild steel surface. The influence of exposure time on the efficiency of mixture extract was investigated. Scanning electron microscopy (SEM/EDX) analyses confirmed the formation of a protective adsorbed film upon the mild steel surface.

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