An electroactive co-polymer as corrosion inhibitor for steel in sulphuric acid medium

Ganesha Achary; Y. Arthoba Naik; S. Vijay Kumar; T. V. Venkatesha; B. S. Sherigara

doi:10.1016/j.apsusc.2008.02.103

An electroactive co-polymer as corrosion inhibitor for steel in sulphuric acid medium

Ganesha Achary, Y. Arthoba Naik, S. Vijay Kumar, T. V. Venkatesha, B. S. Sherigara

Kuvempu University

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

60 Scopus citations

Abstract

The corrosion behavior of mild steel in sulphuric acid solution containing various concentrations of a co-polymer formed between maleic anhydride and N-vinyl-2-pyrrolidone (VPMA) was investigated using weight-loss, polarization and electrochemical impedance techniques. The polymer acts as an effective corrosion inhibitor for steel in sulphuric acid medium. The inhibition process is attributed to the formation of an adsorbed film of co-polymer on the metal surface which protects the metal against corrosion. Scanning electron microscopy (SEM) studies of the metal surfaces confirmed the existence of an adsorbed film. The adsorption followed the Langmuir isotherm. The protection efficiency increased with increase in inhibitor concentration and decreased with increase in temperature and acid concentration. The thermodynamic functions of the adsorption and dissolution processes were evaluated.

Original language	British English
Pages (from-to)	5569-5573
Number of pages	5
Journal	Applied Surface Science
Volume	254
Issue number	17
DOIs	https://doi.org/10.1016/j.apsusc.2008.02.103
State	Published - 30 Jun 2008

Keywords

Adsorption
Co-polymer and electroactive
Corrosion inhibition

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10.1016/j.apsusc.2008.02.103

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title = "An electroactive co-polymer as corrosion inhibitor for steel in sulphuric acid medium",

abstract = "The corrosion behavior of mild steel in sulphuric acid solution containing various concentrations of a co-polymer formed between maleic anhydride and N-vinyl-2-pyrrolidone (VPMA) was investigated using weight-loss, polarization and electrochemical impedance techniques. The polymer acts as an effective corrosion inhibitor for steel in sulphuric acid medium. The inhibition process is attributed to the formation of an adsorbed film of co-polymer on the metal surface which protects the metal against corrosion. Scanning electron microscopy (SEM) studies of the metal surfaces confirmed the existence of an adsorbed film. The adsorption followed the Langmuir isotherm. The protection efficiency increased with increase in inhibitor concentration and decreased with increase in temperature and acid concentration. The thermodynamic functions of the adsorption and dissolution processes were evaluated.",

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T1 - An electroactive co-polymer as corrosion inhibitor for steel in sulphuric acid medium

AU - Achary, Ganesha

AU - Naik, Y. Arthoba

AU - Kumar, S. Vijay

AU - Venkatesha, T. V.

AU - Sherigara, B. S.

PY - 2008/6/30

Y1 - 2008/6/30

N2 - The corrosion behavior of mild steel in sulphuric acid solution containing various concentrations of a co-polymer formed between maleic anhydride and N-vinyl-2-pyrrolidone (VPMA) was investigated using weight-loss, polarization and electrochemical impedance techniques. The polymer acts as an effective corrosion inhibitor for steel in sulphuric acid medium. The inhibition process is attributed to the formation of an adsorbed film of co-polymer on the metal surface which protects the metal against corrosion. Scanning electron microscopy (SEM) studies of the metal surfaces confirmed the existence of an adsorbed film. The adsorption followed the Langmuir isotherm. The protection efficiency increased with increase in inhibitor concentration and decreased with increase in temperature and acid concentration. The thermodynamic functions of the adsorption and dissolution processes were evaluated.

AB - The corrosion behavior of mild steel in sulphuric acid solution containing various concentrations of a co-polymer formed between maleic anhydride and N-vinyl-2-pyrrolidone (VPMA) was investigated using weight-loss, polarization and electrochemical impedance techniques. The polymer acts as an effective corrosion inhibitor for steel in sulphuric acid medium. The inhibition process is attributed to the formation of an adsorbed film of co-polymer on the metal surface which protects the metal against corrosion. Scanning electron microscopy (SEM) studies of the metal surfaces confirmed the existence of an adsorbed film. The adsorption followed the Langmuir isotherm. The protection efficiency increased with increase in inhibitor concentration and decreased with increase in temperature and acid concentration. The thermodynamic functions of the adsorption and dissolution processes were evaluated.

KW - Adsorption

KW - Co-polymer and electroactive

KW - Corrosion inhibition

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U2 - 10.1016/j.apsusc.2008.02.103

DO - 10.1016/j.apsusc.2008.02.103

M3 - Article

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SN - 0169-4332

VL - 254

SP - 5569

EP - 5573

JO - Applied Surface Science

JF - Applied Surface Science

IS - 17

ER -

An electroactive co-polymer as corrosion inhibitor for steel in sulphuric acid medium

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Keywords

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