Attenuation of Acid Corrosion of Mild Steel Using a Novel Organic Dye: Electrochemical and Surface Measurements

Rao Yudhistira Rao; Kumari P Preethi Kumari P; Dhanya Sunil; Prakash Shetty; Suma A. Rao

doi:10.3103/S1068375519040069

Attenuation of Acid Corrosion of Mild Steel Using a Novel Organic Dye: Electrochemical and Surface Measurements

Rao Yudhistira Rao, Kumari P Preethi Kumari P, Dhanya Sunil, Prakash Shetty, Suma A. Rao

Department of Chemistry, Manipal Institute of Technology, Manipal

Research output: Contribution to journal › Article › peer-review

8 Citations (Scopus)

Abstract

Abstract: The corrosion behavior of mild steel in acid media was studied at different temperatures and over a range of concentrations of a newly synthesized azo dye, namely, 2-((E)-((Z)-(2-hydroxy- 5-((E)phenyldiazenyl) benzylidene) hydrazono) methyl)-4-(phenyldiazenyl)phenol (PBHP). Standard electrochemical methods such as potentiodynamic polarization and electrochemical impedance spectroscopy were employed for the corrosion rate measurements. As per the experimental data, the inhibition efficiency was observed to increase with an increase in the concentrations of PBHP. Potentiodynamic polarization measurements indicate that the studied inhibitor functions as mixed type and followed Langmuir adsorption isotherm. The surface morphology of the mild steel specimen was examined before and after corrosion using scanning electron microscopy and atomic force microscopy.

Original language	English
Pages (from-to)	443-454
Number of pages	12
Journal	Surface Engineering and Applied Electrochemistry
Volume	55
Issue number	4
DOIs	https://doi.org/10.3103/S1068375519040069
Publication status	Published - 01-07-2019

All Science Journal Classification (ASJC) codes

Surfaces and Interfaces
Surfaces, Coatings and Films
Industrial and Manufacturing Engineering

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title = "Attenuation of Acid Corrosion of Mild Steel Using a Novel Organic Dye: Electrochemical and Surface Measurements",

abstract = "Abstract: The corrosion behavior of mild steel in acid media was studied at different temperatures and over a range of concentrations of a newly synthesized azo dye, namely, 2-((E)-((Z)-(2-hydroxy- 5-((E)phenyldiazenyl) benzylidene) hydrazono) methyl)-4-(phenyldiazenyl)phenol (PBHP). Standard electrochemical methods such as potentiodynamic polarization and electrochemical impedance spectroscopy were employed for the corrosion rate measurements. As per the experimental data, the inhibition efficiency was observed to increase with an increase in the concentrations of PBHP. Potentiodynamic polarization measurements indicate that the studied inhibitor functions as mixed type and followed Langmuir adsorption isotherm. The surface morphology of the mild steel specimen was examined before and after corrosion using scanning electron microscopy and atomic force microscopy.",

author = "{Yudhistira Rao}, Rao and {Preethi Kumari P}, {Kumari P} and Dhanya Sunil and Prakash Shetty and Rao, {Suma A.}",

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T1 - Attenuation of Acid Corrosion of Mild Steel Using a Novel Organic Dye

T2 - Electrochemical and Surface Measurements

AU - Yudhistira Rao, Rao

AU - Preethi Kumari P, Kumari P

AU - Sunil, Dhanya

AU - Shetty, Prakash

AU - Rao, Suma A.

PY - 2019/7/1

Y1 - 2019/7/1

N2 - Abstract: The corrosion behavior of mild steel in acid media was studied at different temperatures and over a range of concentrations of a newly synthesized azo dye, namely, 2-((E)-((Z)-(2-hydroxy- 5-((E)phenyldiazenyl) benzylidene) hydrazono) methyl)-4-(phenyldiazenyl)phenol (PBHP). Standard electrochemical methods such as potentiodynamic polarization and electrochemical impedance spectroscopy were employed for the corrosion rate measurements. As per the experimental data, the inhibition efficiency was observed to increase with an increase in the concentrations of PBHP. Potentiodynamic polarization measurements indicate that the studied inhibitor functions as mixed type and followed Langmuir adsorption isotherm. The surface morphology of the mild steel specimen was examined before and after corrosion using scanning electron microscopy and atomic force microscopy.

AB - Abstract: The corrosion behavior of mild steel in acid media was studied at different temperatures and over a range of concentrations of a newly synthesized azo dye, namely, 2-((E)-((Z)-(2-hydroxy- 5-((E)phenyldiazenyl) benzylidene) hydrazono) methyl)-4-(phenyldiazenyl)phenol (PBHP). Standard electrochemical methods such as potentiodynamic polarization and electrochemical impedance spectroscopy were employed for the corrosion rate measurements. As per the experimental data, the inhibition efficiency was observed to increase with an increase in the concentrations of PBHP. Potentiodynamic polarization measurements indicate that the studied inhibitor functions as mixed type and followed Langmuir adsorption isotherm. The surface morphology of the mild steel specimen was examined before and after corrosion using scanning electron microscopy and atomic force microscopy.

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Attenuation of Acid Corrosion of Mild Steel Using a Novel Organic Dye: Electrochemical and Surface Measurements

Abstract

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