Electrochemical investigation of hydrazide derivative as corrosion inhibitor for mild steel in hydrochloric acid medium

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2 Citations (Scopus)

Abstract

Inhibition effect of (2E)-2-(3-hydroxy-2-methoxybenzylidene) hydrazinecarbothioamide (HMBHC) on the corrosion of mild steel in 0.5 M HCl solution has been investigated using potentiostatic polarization and electrochemical impedance spectroscopic techniques. The inhibition efficiency increases with increase in inhibitor concentration and with increase in temperature. The polarization study show that the HMBHC acted as mixed type of inhibitor. The kinetic and thermodynamic parameters have been calculated and discussed in detail. The adsorption of inhibitor on the metal surface is found to be through chemisorption and followed Langmuir’s adsorption isotherm. The surface morphology of the specimen has been studied by scanning electron microscopy study.

Original languageEnglish
Pages (from-to)196-203
Number of pages8
JournalIndian Journal of Chemical Technology
Volume23
Issue number3
Publication statusPublished - 01-05-2016

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Hydrochloric Acid
Corrosion inhibitors
Hydrochloric acid
Carbon steel
Polarization
Derivatives
Chemisorption
Adsorption isotherms
Surface morphology
Metals
Thermodynamics
Corrosion
Adsorption
Scanning electron microscopy
Kinetics
Temperature

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)

Cite this

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title = "Electrochemical investigation of hydrazide derivative as corrosion inhibitor for mild steel in hydrochloric acid medium",
abstract = "Inhibition effect of (2E)-2-(3-hydroxy-2-methoxybenzylidene) hydrazinecarbothioamide (HMBHC) on the corrosion of mild steel in 0.5 M HCl solution has been investigated using potentiostatic polarization and electrochemical impedance spectroscopic techniques. The inhibition efficiency increases with increase in inhibitor concentration and with increase in temperature. The polarization study show that the HMBHC acted as mixed type of inhibitor. The kinetic and thermodynamic parameters have been calculated and discussed in detail. The adsorption of inhibitor on the metal surface is found to be through chemisorption and followed Langmuir’s adsorption isotherm. The surface morphology of the specimen has been studied by scanning electron microscopy study.",
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AU - Preethi Kumari, P.

AU - Shetty, Prakash

AU - Rao, Suma A.

PY - 2016/5/1

Y1 - 2016/5/1

N2 - Inhibition effect of (2E)-2-(3-hydroxy-2-methoxybenzylidene) hydrazinecarbothioamide (HMBHC) on the corrosion of mild steel in 0.5 M HCl solution has been investigated using potentiostatic polarization and electrochemical impedance spectroscopic techniques. The inhibition efficiency increases with increase in inhibitor concentration and with increase in temperature. The polarization study show that the HMBHC acted as mixed type of inhibitor. The kinetic and thermodynamic parameters have been calculated and discussed in detail. The adsorption of inhibitor on the metal surface is found to be through chemisorption and followed Langmuir’s adsorption isotherm. The surface morphology of the specimen has been studied by scanning electron microscopy study.

AB - Inhibition effect of (2E)-2-(3-hydroxy-2-methoxybenzylidene) hydrazinecarbothioamide (HMBHC) on the corrosion of mild steel in 0.5 M HCl solution has been investigated using potentiostatic polarization and electrochemical impedance spectroscopic techniques. The inhibition efficiency increases with increase in inhibitor concentration and with increase in temperature. The polarization study show that the HMBHC acted as mixed type of inhibitor. The kinetic and thermodynamic parameters have been calculated and discussed in detail. The adsorption of inhibitor on the metal surface is found to be through chemisorption and followed Langmuir’s adsorption isotherm. The surface morphology of the specimen has been studied by scanning electron microscopy study.

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