SYNERGISTIC EFFECT OF HALIDE IONS ON THE CORROSION INHIBITION OF MILD STEEL IN SULPHURIC ACID USING METHYL, N-METHYL ETHYL AND ETHYL SUBSTITUTED γ-2,c-6-DIPHENYL PIPERIDIN-4-ONE SEMICARBAZONES

2018 ◽  
Vol 25 (02) ◽  
pp. 1850050
Author(s):  
V. SHANMUGA PRIYA ◽  
C. UMA RANI ◽  
S. VELRANI
Keyword(s):  
Weight Loss ◽  
Synergistic Effect ◽  
Mild Steel ◽  
Sulphuric Acid ◽  
Corrosion Inhibition ◽  
Inhibition Efficiency ◽  
Halide Ions ◽  
Ac Impedance Spectroscopy ◽  
Weight Loss Method ◽  
Loss Method

The synergistic effect of halide ions such as KCl, KBr and KI on the corrosion inhibition of mild steel in 1 N sulphuric acid by [Formula: see text]-2,c-6-diphenyl-t-3-methyl piperdin-4-ones with semicarbazone (01[Formula: see text]SC), [Formula: see text]-2,c-6-diphenyl-N-methyl-t-3-ethyl piperdin-4-ones with semicarbazone (02[Formula: see text]SC) and 2,6-diphenyl-t-3-ethyl piperdin-4-one with semicarbazone (03[Formula: see text]SC) has been examined by weight loss method, potentiodynamic polarization measurements and electrochemical AC impedance spectroscopy. Results show that substituted [Formula: see text]-2,c-6-diphenyl piperidin-4-ones with semicarbazone act as the perfect corrosion inhibitors and their inhibition efficiency increases with the addition of halide ions. The inhibitor (01[Formula: see text]SC) shows the inhibition efficiency of 78.28% (0.2[Formula: see text]mM) by using a weight loss method. The influence of I[Formula: see text], Br[Formula: see text] and Cl[Formula: see text] anions raises the inhibition efficiency of the substituted 2,6-diphenyl piperidin-4-ones with semicarbazone due to the synergistic effect. The synergistic effect of halide ions was formed in the following order: KI [Formula: see text] KBr [Formula: see text] KCl.

scholarly journals A Comparative Study on Corrosion Inhibition of Mild Steel UsingPiper NigrumL. in Different Acid Medium

2010 ◽  
Vol 7 (3) ◽  
pp. 942-946 ◽  
Author(s):  
B. Anand ◽  
V. Balasubramanian
Keyword(s):  
Weight Loss ◽  
Hydrochloric Acid ◽  
Mild Steel ◽  
Acid Medium ◽  
Sulphuric Acid ◽  
Corrosion Inhibition ◽  
Piper Nigrum ◽  
Time Interval ◽  
Weight Loss Method ◽  
Loss Method

The inhibition of corrosion of mild steel usingPiper nigrumL in different acid medium by weight loss method was investigated. The corrosion inhibition was studied in hydrochloric acid and sulphuric acid by weight loss method at different time interval at room temperature. The result showed that the corrosion inhibition efficiency of this compound was found to vary with different time interval and different acid concentration. Also, it was found that the corrosion inhibition behavior ofPiper nigrumL is greater in sulphuric acid than hydrochloric acid. So,Piper nigrumL can be used as a good inhibitor for preventing mild steel material.

scholarly journals Corrosion Inhibition of Bark Extract of Euphorbia royleana on Mild Steel in 1M HCl

2019 ◽  
Vol 40 ◽  
pp. 25-29
Author(s):  
Bishal Thapa ◽  
Dipak Kumar Gupta ◽  
Amar Prasad Yadav
Keyword(s):  
Weight Loss ◽  
Mild Steel ◽  
Corrosion Inhibitor ◽  
Inhibition Efficiency ◽  
Bark Extract ◽  
Potential Measurement ◽  
Maximum Inhibition ◽  
Weight Loss Method ◽  
Loss Method ◽  
Loss Experiment

The bark extract of Euphorbia royleana as a green corrosion inhibitor was studied in 1M HCl using weight-loss method and potential measurement. The results show that the bark extract of Euphorbia royleana is an effective anti-corrosion inhibitor of mild steel in acidic media. The corrosion rate decreases with the time of immersion. Weight loss experiment shows that the loss in weight decreases with the time of immersion and inhibition efficiency increases with the concentration of extract. It was observed that maximum inhibition efficiency is 99.60% in 100% concentration of extract. Potential measurement study shows that bark extracts act as a mixed type of inhibitor i.e. inhibits both anodically as well as cathodically. 

scholarly journals Influence of Benzotriazole on Corrosion Inhibition of Mild Steel in Citric Acid Medium

2010 ◽  
Vol 7 (3) ◽  
pp. 1090-1094 ◽  
Author(s):  
P. Matheswaran ◽  
A. K. Ramasamy
Keyword(s):  
Citric Acid ◽  
Mild Steel ◽  
Corrosion Inhibition ◽  
Inhibition Efficiency ◽  
First Order ◽  
First Order Kinetics ◽  
Weight Loss Method ◽  
Corrosion Inhibition Efficiency ◽  
Loss Method ◽  
Kinetic Treatment

Benzotriazole an organic compounds has been studied as corrosion inhibition for mild steel in 1 N citric acid by weight loss method. The result showed that the corrosion inhibition efficiency of the compound was found to be varying with the temperature and acid concentration. Also it was found that the corrosion inhibition behaviour of benzotriazole is better when the concentration of inhibitor is increased. The kinetic treatment of the results shows first order kinetics.

scholarly journals Synergistic effect of ZnO nanoparticles with organic compound as corrosion inhibition

2020 ◽  
Author(s):  
Buraq T Sh AL-Mosawi ◽  
Mohammed M Sabri ◽  
Muhanad A Ahmed
Keyword(s):  
Weight Loss ◽  
Mild Steel ◽  
Corrosion Inhibitors ◽  
Inhibition Efficiency ◽  
Corrosion Process ◽  
Zno Nps ◽  
Weight Loss Method ◽  
Steel Surfaces ◽  
Loss Method ◽  
Isatin Derivative

Abstract In chemical manufactures, the corrosion inhibitors were added in order to reduce the corrosion of mild steel. Chemical molecules are often used on mild steel surfaces as portion of the latest finishing steps before painting and/or storage. Here, this work elucidated the utilization of an isatin derivative, namely, 3-((3-acetylphenyl)imino)indolin-2-one synergistic with zinc oxide nanoparticles for improving the impedance of mild steel (MS) against corrosion in 1.0 M hydrochloric acid using the weight loss method and scanning electron microscopy (SEM). Weight loss measurements demonstrated that the best 3-((3-acetylphenyl)imino)indolin-2-one concentration was 0.5 mM and the inhibition efficiency was 83% whereas the inhibition efficiency was 92% with addition of ZnO NPs. 3-((3-Acetylphenyl)imino)indolin-2-one retards the corrosion process at 300 K and demonstrates low inhibition efficiencies at 310, 320 and 330 K.

scholarly journals Influence of Formazan Derivatives on Corrosion Inhibition of Mild Steel in Hydrochloric Acid Medium

2009 ◽  
Vol 6 (s1) ◽  
pp. S438-S444 ◽  
Author(s):  
P. Venkatesan ◽  
B. Anand ◽  
P. Matheswaran
Keyword(s):  
Hydrochloric Acid ◽  
Mild Steel ◽  
Corrosion Inhibition ◽  
Inhibition Efficiency ◽  
First Order Kinetics ◽  
Hydrochloric Acid Medium ◽  
Weight Loss Method ◽  
Corrosion Inhibition Efficiency ◽  
Loss Method ◽  
Kinetic Treatment

Formazan of benzaldehyde (FB) and formazan ofp-dimethyl amino benzaldehyde (FD) were synthesized. These compounds were studied as corrosion inhibitor for mild steel in 1.11 N hydrochloric acid by weight loss method. The result showed that the corrosion inhibition efficiency of these compounds was found to vary with the temperature and acid concentration. Also, it was found that the corrosion inhibition behaviour of FD is greater than that of FB. The kinetic treatment of the results gave first order kinetics. The relative corrosion inhibition efficiency of these compounds has been explained on the basis of structure dependent - electron donor properties of the inhibitors.

scholarly journals Effect of N-(6-aminobenzo[d]thiazol-2-yl)benzamide and 2,6-diamino-benzothiazole as Corrosion Inhibitor in acid medium

2016 ◽  
Vol 12 (12) ◽  
pp. 4593-4613
Author(s):  
Rekha. S ◽  
Kannan. K ◽  
Gnanavel. S
Keyword(s):  
Weight Loss ◽  
Mild Steel ◽  
Corrosion Inhibitor ◽  
Acid Medium ◽  
Potentiodynamic Polarization ◽  
Inhibition Efficiency ◽  
Free Energy Of Adsorption ◽  
Weight Loss Method ◽  
Ft Ir ◽  
Loss Method

2-amino-6-nitrobenzothiazole(ANBT) was used as an inhibitor for the corrosion of mild steel in acid medium since the inhibition efficiency was low for that compound, 2,6-diaminobenzothiazole (DABT) and N-(6-aminobenzo [d] thiazol-2-y1) benzamide(ABTB) was synthesized,  and characterized by FT-IR, H1NMR, and C13NMR.The synthesized compound was tested as a corrosion inhibitor for mild steel in 1N HCl solution using weight loss, Potentiodynamic polarization, and AC impedance techniques. The inhibition efficiency was studied at the different time, temperature and acid concentration by weight loss method. The values of activation energy and free energy of adsorption of these compounds were also calculated, which reveals that the inhibitor was adsorbed on the mild steel by physisorption mechanism. Adsorption obeys Langmuir and Temkin adsorption isotherms. The results obtained by weight loss method revealed that the compound performed as a better inhibitor for mild steel in 1N HCl. Potentiodynamic polarization studies showed that the inhibitor acts as a mixed type inhibitor.AC impedance studies revealed that the corrosion process was controlled by charge transfer process. Surface analysis was studied using SEM and FT-IR.

The Synergistic Effect of Thiourea and Surfactants on Corrosion Inhibition of Stainless Steel-316 in Hydrochloric Acid

2014 ◽  
Vol 917 ◽  
pp. 28-34 ◽  
Author(s):  
Sami Ullah ◽  
Muhammad Nadeem ◽  
Mohd Shariff Azmi ◽  
Faiz Ahmad ◽  
Shaukat Ali Shahid ◽  
...  
Keyword(s):  
Weight Loss ◽  
Stainless Steel ◽  
Synergistic Effect ◽  
Corrosion Inhibition ◽  
Raw Materials ◽  
Sodium Dodecyl ◽  
Ammonium Bromide ◽  
Weight Loss Method ◽  
Loss Method ◽  
Stainless Steel 316

Corrosion and scaling are the common problems to all the industries. A remedy of these problems was sought out through chemical treatment: indigenously available raw materials including thiourea, surfactants (cationic, anionic and nonionic containing pre, critical and post micellar concentration). Evaluation of corrosion inhibition properties stainless steel 316 by thiourea based inhibitor and its synergistic effect with cationic cetyl tri-methyl ammonium bromide (CTAB), anionic sodium dodecyl sulphate (SDS) and nonionic triton X-100 have been carried out by weight loss method as a function of concentration of thiourea and surfactants. These materials were applied to the coupons of stainless steel 316 in different acidic concentration. Corrosion rates were calculated using weight loss method. Excellent results were achieved regarding corrosion inhibition in the presence of thiourea and surfactants assuring the better performance of these chemicals. The results showed that corrosion rate was decreased from 90 mpy to 12.1 mpy after 720 hours by the addition of 200ppm thiourea in critical micellar concentration of SDS in 3M HCl acid solution.

scholarly journals Corrosion Behaviour of Mild Steel in Acidic Medium in Presence of Aqueous Extract ofAllamanda Blanchetii

2011 ◽  
Vol 8 (1) ◽  
pp. 226-230 ◽  
Author(s):  
B. Anand ◽  
V. Balasubramanian
Keyword(s):  
Mild Steel ◽  
Corrosion Inhibition ◽  
Aqueous Extract ◽  
Inhibition Efficiency ◽  
Corrosion Behaviour ◽  
Time Interval ◽  
Time Intervals ◽  
Steel Material ◽  
Weight Loss Method ◽  
Loss Method

The inhibition efficiency (IE) of an aqueous extract ofAllamanda blanchetii(Purple) in controlling corrosion of mild steel which has been evaluated by weight loss method in the absence and presence of corrosion inhibitor at different time intervals at room temperature. The result showed that the corrosion inhibition efficiency ofAllamanda blanchetiiwas found to vary with different time interval and different acid concentrations. Also, it was found that the corrosion inhibition behavior ofAllamanda blanchetiiis greater in sulphuric acid than citric acid medium. SoAllamanda blanchettican be used as a good inhibitor for preventing mild steel material. The surface analysis study confirms the corrosion of the mild steel and its inhibition by the inhibitorAllamanda blanchetii.

scholarly journals Corrosion Inhibition Effect of 1,10-Phenanthroline-5,6-diamine on Mild Steel in Hydrochloric Acid Solution

2018 ◽  
Author(s):  
Ahmed A. Al-Amiery
Keyword(s):  
Weight Loss ◽  
Hydrochloric Acid ◽  
Acid Solution ◽  
Mild Steel ◽  
Inhibition Efficiency ◽  
Inhibition Effect ◽  
Increase With Increase ◽  
Weight Loss Method ◽  
Loss Method ◽  
Hcl Solution

The inhibition impacts of 1,10-Phenanthroline-5,6-diamine (PTDA) on mild steel in 1 M HCl solution were investigated through weight loss method. The inhibition efficiencies of PTDA increase with increase in PTDA concentration at the temperature 303. Weight loss method indicate that PTDA is an excellent inhibitor the inhibition efficiency of 81.5% at the maximum PTDA concentration of 0.5 g/L at the temperature 303K.

scholarly journals Synergistic effects of halide ions and Acacia senegal gum on the corrosion inhibition of mild steel in sulfuric acid solution

2021 ◽  
Vol 47 (2) ◽  
pp. 686-697
Author(s):  
Jovine Emmanuel ◽  
Joseph Buchweishaija
Keyword(s):  
Sulfuric Acid ◽  
Synergistic Effect ◽  
Acid Solution ◽  
Mild Steel ◽  
Corrosion Inhibition ◽  
Sulfuric Acid Solution ◽  
Inhibition Efficiency ◽  
Synergistic Effects ◽  
Halide Ions ◽  
Acacia Senegal

The synergistic effects of halide ions, Br– and I– and Acacia senegal gum exudates on the corrosion inhibition of mild steel in 0.5 M sulfuric acid solution has been investigated by potentiodynamic polarization measurements and electrochemical impedance spectroscopy techniques. Results showed that Acacia senegal gum exudate moderately reduces the corrosion rate of mild steel. The inhibition efficiencies on mild steel electrodes increased with increase in gum exudate concentrations up to 300 ppm, corresponding to the inhibition efficiency of about 43% and its inhibition efficiency increased up to 81.6% with addition of halide ions due to synergistic effects. The enhancement effect of the halide ions was higher with iodide than with bromide ions. The synergism parameter, S1, evaluated was greater than unity, consistent with synergistic effect. The adsorption of Acacia senegal gum on the mild steel surface obeyed Langmuir’s adsorption isotherm. The results obtained, i.e., corrosion rates of mild steel, inhibition efficiencies of Acacia senegal gum exudates and the synergistic effects of Acacia senegal gum exudates and halides from polarization and impedance measurements were in good agreement. Keywords: corrosion, inhibition, mild steel, synergistic effect, Acacia senegal, gum exudate

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