Polyethelene Glycol-Anthranilic Acid Composite as Corrosion Inhibitor for Mild Steel in Acid Medium

The polymer PGA composite was prepared by chemical oxidative method of polyethylene glycol, anthranilic acid with ammonium persulphate in oxalic acid medium. The resulted polymer was characterized by FTIR spectroscopy. The performance of the polymer polyglycol anthranilic acid composite (PGA) as corrosion inhibitor for mild steel in 1 M HCl has been studied by weight loss, potentiodynamic and impedance spectroscopy methods. The maximum IE was found to be 97%. Experimental results were fitted to Langmuir adsorption isotherm. Electrochemical studies confirmed the inhibitive nature of the PGA composite and also the mixed nature of the inhibitor. The polymer is found to be highly efficient non-toxic and environmentally safe.

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Evaluation of the inhibition efficiency of Pogonatum microstomum for mild steel in acid medium using gravimetric, kinetics, electrochemical studies and statistical modeling

10.1063/5.0019455 ◽

2020 ◽

Author(s):

Jilna Jomy ◽

S. J. Hepziba Magie Jessima ◽

S. Subhashini

Keyword(s):

Mild Steel ◽

Acid Medium ◽

Statistical Modeling ◽

Inhibition Efficiency ◽

Electrochemical Studies

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Adsorption and electrochemical studies of Pimenta dioica leaf extracts as corrosion inhibitor for mild steel in hydrochloric acid

Materials Chemistry and Physics ◽

10.1016/j.matchemphys.2015.09.013 ◽

2015 ◽

Vol 167 ◽

pp. 28-41 ◽

Cited By ~ 57

Author(s):

K.K. Anupama ◽

K. Ramya ◽

K.M. Shainy ◽

Abraham Joseph

Keyword(s):

Hydrochloric Acid ◽

Mild Steel ◽

Corrosion Inhibitor ◽

Electrochemical Studies ◽

Leaf Extracts ◽

Pimenta Dioica

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L-Dopa as Corrosion Inhibitor for Mild Steel in Mineral Acid Medium

The Open Electrochemistry Journal ◽

10.2174/1876505x00901010015 ◽

2009 ◽

Vol 1 (1) ◽

pp. 15-18 ◽

Cited By ~ 3

Author(s):

H.P. Sachin ◽

M.H. Moinuddin Khan ◽

S. Raghavendra ◽

N.S. Bhujangaiah

Keyword(s):

Mild Steel ◽

Corrosion Inhibitor ◽

Acid Medium ◽

Mineral Acid

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

International Journal of Engineering & Technology ◽

10.14419/ijet.v7i4.14.27520 ◽

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.

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Inhibition Effect of Miconazole Nitrate on the Corrosion of Mild Steel in Hydrochloric Acid Medium

International Journal of Electrochemistry ◽

10.4061/2011/157576 ◽

2011 ◽

Vol 2011 ◽

pp. 1-8 ◽

Cited By ~ 5

Author(s):

J. Ishwara Bhat ◽

Vijaya D. P. Alva

Keyword(s):

Hydrochloric Acid ◽

Mild Steel ◽

Acid Medium ◽

Inhibition Efficiency ◽

Electrochemical Impedance ◽

Inhibitor Molecule ◽

Langmuir Adsorption ◽

Hydrochloric Acid Medium ◽

Miconazole Nitrate ◽

Impedance Spectroscopy Technique

The corrosion inhibition of mild steel by miconazole nitrate, an antifungal drug has been investigated using potentiodynamic polarization, electrochemical impedance spectroscopy technique, and weight loss methods. The experimental results suggested miconazole nitrate is a good corrosion inhibitor for mild steel in 1 M hydrochloric acid medium. The inhibition efficiency increased with increase in inhibitor concentration. The thermodynamic parameters were determined and discussed. The inhibition was assumed to occur via adsorption of the inhibitor molecule on the surface of mild steel following Langmuir adsorption isotherm.

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Electrochemical behaviour of acetyl G as corrosion inhibitor for mild steel in acid medium

Pigment & Resin Technology ◽

10.1108/prt-10-2014-0087 ◽

2015 ◽

Vol 44 (6) ◽

pp. 371-378 ◽

Cited By ~ 1

Author(s):

Y. Sangeetha ◽

S. Meenakshi ◽

C. Sairam Sundaram

Keyword(s):

Mild Steel ◽

Corrosion Inhibitor ◽

Acid Medium ◽

Steel Surface ◽

Inhibition Efficiency ◽

Electrochemical Impedance ◽

Electrochemical Behaviour ◽

Green Inhibitor ◽

Content Type ◽

Mild Steel Surface

Purpose – The purpose of this paper is to develop an eco-friendly corrosion inhibitor for mild steel in 1 M HCl. Design/methodology/approach – A pharmaceutical drug acetyl G was investigated for its corrosion inhibition efficiency using weight loss method, potentiodynamic polarisation and electrochemical impedance spectroscopy. Findings – The inhibition efficiency increased with increase in inhibitor concentration. Results from polarisation studies revealed mixed type of inhibition. Impedance studies, scanning electron microscopy and Fourier transform spectroscopy confirm the adsorption of inhibitor on the mild steel surface. Research limitations/implications – The drug acetyl G has sulphur and nitrogen atoms which effectively block the corrosion of mild steel and is non-toxic and has good inhibition efficiency. Practical implications – This method provides an excellent, non-toxic and cost-effective material as a corrosion inhibitor for mild steel in acid medium. Originality/value – Application of this drug as a corrosion inhibitor has not been reported yet in the literature. Replacing the organic inhibitors, this green inhibitor shows excellent inhibition efficiency. This is adsorbed excellently on the mild steel surface due to the presence of long chain and hetero atoms. Thus, the drug retards the corrosion reaction.

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