Organic sulphur-containing compounds as corrosion inhibitors for mild steel in acidic media: correlation between inhibition efficiency and chemical structure

2004 ◽  
Vol 236 (1-4) ◽  
pp. 155-164 ◽  
Author(s):  
M Özcan ◽  
İ Dehri ◽  
M Erbil
Keyword(s):  
Mild Steel ◽  
Chemical Structure ◽  
Corrosion Inhibitors ◽  
Inhibition Efficiency ◽  
Acidic Media ◽  
Organic Sulphur

scholarly journals Study New Pyridine Derivatives as Corrosion Inhibitors for Mild Steel in an Acidic Media

2021 ◽  
Vol 24 (3) ◽  
pp. 1-8
Author(s):  
Rania Kareem Hameed ◽  
◽  
Mehdi Salih Shihab ◽  
Keyword(s):  
Mild Steel ◽  
Corrosion Inhibitors ◽  
Organic Molecules ◽  
Surface Coverage ◽  
Inhibition Efficiency ◽  
Pyridinium Salts ◽  
Pyridine Derivatives ◽  
Acidic Media ◽  
Free Energy Of Adsorption ◽  
Pyridinium Bromide

Some new pyridinium salts, namely4-(4-bromo-benzylidene-hydrazinocarbonyl)-1-phenyl-pyridinium bromide, A1; 4-(4-bromo-benzylidene-hydrazinocarbonyl)-1-butyl-pyridinium bromide, A2; 4-(4-bromo-benzylidene-hydrazinocarbonyl)-1-phencyl-pyridinium bromide, A3; were synthesized and studied as corrosion inhibitors for mild steel in 1M H2SO4aqueous solution at 20°C by weight loss measuring for 24 hrs. The results showed that the inhibition efficiency of all pyridinium bromide derivatives had a significant in value with the highest concentration. An increase in the inhibitor concentration is accompanied by a decrease in the corrosion rate, an increase in the retarding efficiency and an increase in the degree of surface coverage. The values of the free energy of adsorption revealed the effects of spontaneously reaction of (A1, A2, and A3) and gave useful information to predict the interaction between the metal surface and the organic molecules as corrosion inhibitors.

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. 

scholarly journals BIA, DPA, MBTA and DMA as Vapour Phase Corrosion Inhibitors for Mild Steel under Different Atmospheric Conditions

2013 ◽  
Vol 20 ◽  
pp. 52-66
Author(s):  
Harish Kumar ◽  
Vikas Yadav
Keyword(s):  
Mild Steel ◽  
Corrosion Inhibitors ◽  
Inhibition Efficiency ◽  
Salt Spray ◽  
Vapour Phase ◽  
Raw Material ◽  
Atmospheric Conditions ◽  
Sem Images ◽  
Corrosion Inhibition Efficiency ◽  
Diphenyl Amine

Mild steel is widely used as main raw material in fabrication of equipment, chief material of construction and as weapons. During its storage and transportation conditions, it comes in contact with aggressive environment which leads to decrease in mechanical strength and loss in useful properties. Four different vapor phase corrosion inhibitors (VPCIs) i.e. Benzaimidazole (BIA), Diphenyl amine (DPA), 2-mercapto benzothiazole (MBTA) and N,N-dimethyl aniline (DMA) were tested under different atmospheric conditions at 40 °C by Weight Loss, Eschke test, Salt Spray, SO2 test and SEM techniques. All the four VPCIs show good corrosion inhibition efficiency i.e. 65-96 %. The results obtained from all the four corrosion experiments were supported by SEM images.

General properties and comparison of the corrosion inhibition efficiencies of the triazole derivatives for mild steel

2018 ◽  
Vol 36 (6) ◽  
pp. 507-545 ◽  
Author(s):  
Muhammad Faisal ◽  
Aamer Saeed ◽  
Danish Shahzad ◽  
Nadir Abbas ◽  
Fayaz Ali Larik ◽  
...  
Keyword(s):  
Cost Effectiveness ◽  
Mild Steel ◽  
Corrosion Inhibitors ◽  
Mechanisms Of Action ◽  
Effect Of Temperature ◽  
General Effect ◽  
Acidic Media ◽  
Triazole Derivatives ◽  
Concentration Time ◽  
Acidic Conditions

AbstractMild steel (MS) corrosion is a worldwide issue that greatly affects the industrial and natural environment. To extend the lifespan of appliances, the control of MS corrosion is necessary. To shield MS from corrosion, specifically from acidic conditions, one of the practical and finest approaches is the application of inhibitors. Triazole derivatives are eco-friendly corrosion inhibitors (CIs) having inconsequential toxicities, excellent inhibition efficiencies (IEs) against corrosion of MS, and extremely high cost-effectiveness. This critical review discusses the general effect of temperature, concentration, time after the application of CI, and type of acid on the IE of triazole derivatives. Further, the review provides an adequate amount of information about the features of excellent CIs; a summary of the reported properties of triazole-based inhibitors, CIs in industries, and current requirements of industries; and recommendations and implications for researchers to improve IE. Additionally, the review also illustrates the mechanisms of action and the IEs, which are evaluated from potentiodynamic polarization parameters, in various acidic media and concentrations of triazole inhibitors. By IE correlation with numerous concentrations and acidic conditions, this review is advantageous and helpful for synthetic chemists to expand the diversity and complexity of a class of triazole derivatives by synthesizing new triazole derivatives.

New phosphonate based corrosion inhibitors for mild steel in hydrochloric acid useful for industrial pickling processes: experimental and theoretical approach

2017 ◽  
Vol 41 (21) ◽  
pp. 13114-13129 ◽  
Author(s):  
Neeraj Kumar Gupta ◽  
Chandrabhan Verma ◽  
R. Salghi ◽  
H. Lgaz ◽  
A. K. Mukherjee ◽  
...  
Keyword(s):  
Hydrochloric Acid ◽  
Mild Steel ◽  
Corrosion Inhibition ◽  
Theoretical Approach ◽  
Corrosion Inhibitors ◽  
Inhibition Efficiency ◽  
Phosphorus Containing ◽  
Corrosion Inhibition Efficiency

Phosphorus containing compounds have been evaluated by experimental and theoretical techniques and more than 96% corrosion inhibition efficiency was observed at 200 ppm concentration.

Biogenic amino acid methionine-based corrosion inhibitors of mild steel in acidic media

2019 ◽  
Vol 26 (4) ◽  
pp. 467-482 ◽  
Author(s):  
L. K. M. O. Goni ◽  
M. A. Jafar Mazumder ◽  
S. A. Ali ◽  
M. K. Nazal ◽  
H. A. Al-Muallem
Keyword(s):  
Amino Acid ◽  
Mild Steel ◽  
Corrosion Inhibitors ◽  
Acidic Media ◽  
Amino Acid Methionine
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