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 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 Coumarin-3-Amine as New Corrosion Inhibitor

2017 ◽  
Author(s):  
Ahmed Al-Amiery
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Mild Steel ◽  
Corrosion Inhibitor ◽  
Corrosion Inhibitors ◽  
Inhibition Efficiency ◽  
Spectroscopic Techniques ◽  
Synthetic Compounds ◽  
Weight Loss Method ◽  
Organic Inhibitors ◽  
Loss Method

Corrosion inhibitors are the natural or synthetic compounds that have the ability to inhibit the average of corrosion and reduce the damage of the mild steel. Enormous organic inhibitors nowadays employed in the corrosion domain but excluded due to costly. Comparatively cheap, and stable organic compound, namely 3-((4-nitrobenzylidene)amino)coumarin, have been utilized as an excellent corrosion inhibitor in hydrochloric acid for mild steel. The inhibition efficiency has been figured regarding to weight loss method. The corrosion inhibitor was identified according to spectroscopic techniques namely Fourier transform infrared and nuclear magnetic resonance in addition to micro-elemental analysis. Inhibition efficiency for the studied inhibitor was 71.4% that, at the highest studied concentration.

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.

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 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 Corrosion Inhibition Effect of Dicycloimine Hydrochloride (DCI) on Mild Steel in 1M HCl

2010 ◽  
Vol 7 (1) ◽  
pp. 325-330 ◽  
Author(s):  
R. Rajalakshmi ◽  
S. Subhashini
Keyword(s):  
Mild Steel ◽  
Corrosion Inhibitors ◽  
Inhibition Efficiency ◽  
Effective Inhibitor ◽  
Electrochemical Polarization ◽  
Inhibition Effect ◽  
Weight Loss Method ◽  
Polarization Studies ◽  
Loss Method ◽  
Control Corrosion

Addition of corrosion inhibitors is one of the widely used methods to control corrosion. In this work, an attempt has been made to explore the possibility of using dicycloimine hydrochloride (DCI) as an inhibitor on mild steel in 1 M HCl. The inhibition efficiency of DCI has been evaluated by conventional weight loss method and electrochemical polarization studies. Experimental results are fitted to various adsorption isotherms. Thermodynamic parameters have also been studied from temperature studies. The results reveal that DCI acts as an effective inhibitor (around 90% of IE) in HCl media.

Modification of Punica Granatum Linne Husk Extract as Eco-Friendly Corrosion Inhibitors in Oil Fields

2014 ◽  
Vol 488-489 ◽  
pp. 273-276 ◽  
Author(s):  
Jie Zhang ◽  
Qiang Zhang ◽  
Gang Chen ◽  
Jing Rui Zhao ◽  
De Yao Tang
Keyword(s):  
Weight Loss ◽  
Corrosion Inhibitors ◽  
Inhibition Efficiency ◽  
Punica Granatum ◽  
Inhibitory Effect ◽  
Oil Fields ◽  
Langmuir Adsorption ◽  
Weight Loss Method ◽  
Pomegranate Husk ◽  
Loss Method

The pomegranate husk extract is modified by formaldehyde and diethylamine, the products have been investigated as corrosion inhibitors for Q235A steel used in oil fields. The inhibition efficiency of products have been measured by weight loss method with the concentration range from 10 mg/L to 1,000 mg/L in 1wt% HCl at different temperture. The inhibition efficiency of the modification product shows good inhibition efficiency after modified by formaldehyde and diethylamine, which is up to 89.31% at 60°C. The inhibitory effect of modification products is in accord with Langmuir adsorption equation.

scholarly journals Synergistic and Antagonistic Effects of Sodium Molybdate-Zn2+System

2012 ◽  
Vol 9 (4) ◽  
pp. 1746-1752 ◽  
Author(s):  
J. Wilson Sahayaraj ◽  
A. John Amalraj ◽  
Susai Rajendran ◽  
N. Vijaya
Keyword(s):  
Aqueous Solution ◽  
Weight Loss ◽  
Inhibition Efficiency ◽  
Sodium Molybdate ◽  
Antagonistic Effect ◽  
Protective Film ◽  
Antagonistic Effects ◽  
Polarization Study ◽  
Weight Loss Method ◽  
Loss Method

The inhibition efficiency (IE) of sodium molybdate (SM) in controlling corrosion of carbon steel in an aqueous solution containing 120 ppm of Cl-, in the absence and presence of Zn2+has been evaluated by weight-loss method. A synergistic effect exists between SM and Zn2+when the concentration of Zn2+is 25 ppm and above. Inhibition efficiencies obtained are greater than 85%. Antagonistic effect exists between SM and Zn2+when the concentration of Zn2+is 10 ppm and below. The SM-Zn2+system shows excellent IE up to third day. Above third day IE decreases. Acceleration of corrosion takes place. Excellent IE is shown at pH 5,7 and 12. At pH 9, IE decreases since Zn2+is precipitated as Zn(OH)2in the bulk of the solution. Polarization study reveals that SM-Zn2+system functions as a mixed inhibitor. FTIR spectra reveal that the protective film consists of Fe2+-SM complex and Zn(OH)2.

scholarly journals THERMODYNAMIC PROPERTIES AND CHARACTERIZATIONS OF CHITOSAN NANO-PARTICLES CORROSION INHIBITION ON THE SURFACE OF MILD STEELIN PEAT WATER MEDIA

2016 ◽  
Vol 12 (1) ◽  
pp. 27
Author(s):  
Maria Erna ◽  
Emriadi Emriadi ◽  
Admin Alif ◽  
Syukri Arief
Keyword(s):  
Thermodynamic Properties ◽  
Mild Steel ◽  
Corrosion Inhibition ◽  
Steel Surface ◽  
Complex Compounds ◽  
Nano Particles ◽  
Water Media ◽  
Weight Loss Method ◽  
Steel Surfaces ◽  
Loss Method

The thermodynamic properties and characterizations of corrosion inhibition of chitosan nano-particles on the surface of mild steel in peat water media had been studied using weight loss method at temperatures of 30 - 50 <sup>o</sup>C. Steel surfaces were characterized by FT-IR spectra and SEM-EDS morphology photos. The research found that the value of DG<sup>o </sup>approaching -40 kJmol<sup>-</sup><sup>1</sup>. The negative value of Gibbs free energy shows that the adsorption of inhibitor molecules on the surface of mild steel was achemisorption and it occurred spontaneously. Meanwhile, the values of DH<sup>o </sup>is also negative confirming that the adsoprtion of inhibitor molecules is an exothermic process. The value of DS<sup>o </sup>obtained is positive, it indicates hat the inhibitor molecules were adsorbed spontaneously on the mild steel surface. The analysis on mild steel surfaces hows that the nano-particle chitosan was adsorbed on the steel surface to form the complex compounds.

scholarly journals The inhibition of mild steel corrosion in 0.5 M H2SO4 solution by radish leaf extract

RSC Advances ◽  
2019 ◽  
Vol 9 (70) ◽  
pp. 40997-41009 ◽  
Author(s):  
Dongyi Li ◽  
Panpan Zhang ◽  
Xinyu Guo ◽  
Xiaowei Zhao ◽  
Ying Xu
Keyword(s):  
Weight Loss ◽  
Mild Steel ◽  
Electrochemical Method ◽  
Leaf Extract ◽  
Steel Corrosion ◽  
Inhibitory Effect ◽  
H2so4 Solution ◽  
Mild Steel Corrosion ◽  
Weight Loss Method ◽  
Loss Method

The inhibitory effect of radish leaf extract (RLE) on mild steel corrosion in 0.5 M H2SO4 was studied by the weight loss method and the electrochemical method.

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