Galvanostatic optimization of polyaniline coating on mild steel in tartrate medium for corrosion protection

Dipak Kumar Gupta; Shova Neupane; Sanjay Singh; Amar Prasad Yadav

Galvanostatic optimization of polyaniline coating on mild steel in tartrate medium for corrosion protection

Dipak Kumar Gupta
, Shova Neupane
, Sanjay Singh
, Amar Prasad Yadav^*

^*Corresponding author for this work

Tribhuvan University
CNRS - The National Center for Scientific Research

Research output: Contribution to journal › Journal article › Research › peer-review

Abstract

Optimization of polyaniline (PANI) coating on mild steel (MS) surface has been studied in 0.3 M aniline + 0.2 M sodium potassium tartrate (Na-K Tartrate) by galvanostatic polarization. The current densities of 0.5, 0.75. 1 and 2 mA cm^-2 are used for the electrodeposition of PANI on MS. The obtained PANI coatings have been characterized for its morphology using an optical microscope and corrosion performance by using potentiodynamic polarization in 0.4 M Na₂SO₃ solution simulating an industrial environment. The results reveal a sequential process of dissolution of MS, passivation of MS by forming tartrate salt followed by oxidation of aniline monomer and subsequential nucleation and growth of PANI coating. It is found that the PANI coating obtained at 0.5 mA cm^-2 results in better coating producing corrosion inhibition efficiency (IE) of approximately 90% compared to IE of about 75% for coating obtained at 2 mA cm^-2.

Original language	English
Journal	Indian Journal of Chemical Technology
Volume	29
Issue number	1
Pages (from-to)	82-87
ISSN	0971-457X
Publication status	Published - Jan 2022
Externally published	Yes

Bibliographical note

Funding Information:
The authors would like to thank the Central Department of Chemistry, Tribhuvan University and Tri-Chandra Multiple Campus, Ghantaghar, Kathmandu for providing laboratory facilities. D.K. Gupta would like to acknowledge Nepal Academy of Science and Technology (NAST) for the partial Ph.D. financial support to carry out this study.

Funding

The authors would like to thank the Central Department of Chemistry, Tribhuvan University and Tri-Chandra Multiple Campus, Ghantaghar, Kathmandu for providing laboratory facilities. D.K. Gupta would like to acknowledge Nepal Academy of Science and Technology (NAST) for the partial Ph.D. financial support to carry out this study.

Keywords

Aniline
Electropolymerization
Mild Steel
Polyaniline
Sodium potassium tartrate

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title = "Galvanostatic optimization of polyaniline coating on mild steel in tartrate medium for corrosion protection",

abstract = "Optimization of polyaniline (PANI) coating on mild steel (MS) surface has been studied in 0.3 M aniline + 0.2 M sodium potassium tartrate (Na-K Tartrate) by galvanostatic polarization. The current densities of 0.5, 0.75. 1 and 2 mA cm-2 are used for the electrodeposition of PANI on MS. The obtained PANI coatings have been characterized for its morphology using an optical microscope and corrosion performance by using potentiodynamic polarization in 0.4 M Na2SO3 solution simulating an industrial environment. The results reveal a sequential process of dissolution of MS, passivation of MS by forming tartrate salt followed by oxidation of aniline monomer and subsequential nucleation and growth of PANI coating. It is found that the PANI coating obtained at 0.5 mA cm-2 results in better coating producing corrosion inhibition efficiency (IE) of approximately 90\% compared to IE of about 75\% for coating obtained at 2 mA cm-2.",

keywords = "Aniline, Electropolymerization, Mild Steel, Polyaniline, Sodium potassium tartrate",

author = "Gupta, \{Dipak Kumar\} and Shova Neupane and Sanjay Singh and Yadav, \{Amar Prasad\}",

note = "Funding Information: The authors would like to thank the Central Department of Chemistry, Tribhuvan University and Tri-Chandra Multiple Campus, Ghantaghar, Kathmandu for providing laboratory facilities. D.K. Gupta would like to acknowledge Nepal Academy of Science and Technology (NAST) for the partial Ph.D. financial support to carry out this study. ",

year = "2022",

month = jan,

language = "English",

volume = "29",

pages = "82--87",

journal = "Indian Journal of Chemical Technology",

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publisher = "National Institute of Science Communication and Information Resources (NISCAIR)",

number = "1",

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TY - JOUR

T1 - Galvanostatic optimization of polyaniline coating on mild steel in tartrate medium for corrosion protection

AU - Gupta, Dipak Kumar

AU - Neupane, Shova

AU - Singh, Sanjay

AU - Yadav, Amar Prasad

N1 - Funding Information: The authors would like to thank the Central Department of Chemistry, Tribhuvan University and Tri-Chandra Multiple Campus, Ghantaghar, Kathmandu for providing laboratory facilities. D.K. Gupta would like to acknowledge Nepal Academy of Science and Technology (NAST) for the partial Ph.D. financial support to carry out this study.

PY - 2022/1

Y1 - 2022/1

N2 - Optimization of polyaniline (PANI) coating on mild steel (MS) surface has been studied in 0.3 M aniline + 0.2 M sodium potassium tartrate (Na-K Tartrate) by galvanostatic polarization. The current densities of 0.5, 0.75. 1 and 2 mA cm-2 are used for the electrodeposition of PANI on MS. The obtained PANI coatings have been characterized for its morphology using an optical microscope and corrosion performance by using potentiodynamic polarization in 0.4 M Na2SO3 solution simulating an industrial environment. The results reveal a sequential process of dissolution of MS, passivation of MS by forming tartrate salt followed by oxidation of aniline monomer and subsequential nucleation and growth of PANI coating. It is found that the PANI coating obtained at 0.5 mA cm-2 results in better coating producing corrosion inhibition efficiency (IE) of approximately 90% compared to IE of about 75% for coating obtained at 2 mA cm-2.

AB - Optimization of polyaniline (PANI) coating on mild steel (MS) surface has been studied in 0.3 M aniline + 0.2 M sodium potassium tartrate (Na-K Tartrate) by galvanostatic polarization. The current densities of 0.5, 0.75. 1 and 2 mA cm-2 are used for the electrodeposition of PANI on MS. The obtained PANI coatings have been characterized for its morphology using an optical microscope and corrosion performance by using potentiodynamic polarization in 0.4 M Na2SO3 solution simulating an industrial environment. The results reveal a sequential process of dissolution of MS, passivation of MS by forming tartrate salt followed by oxidation of aniline monomer and subsequential nucleation and growth of PANI coating. It is found that the PANI coating obtained at 0.5 mA cm-2 results in better coating producing corrosion inhibition efficiency (IE) of approximately 90% compared to IE of about 75% for coating obtained at 2 mA cm-2.

KW - Aniline

KW - Electropolymerization

KW - Mild Steel

KW - Polyaniline

KW - Sodium potassium tartrate

M3 - Journal article

AN - SCOPUS:85129485222

SN - 0971-457X

VL - 29

SP - 82

EP - 87

JO - Indian Journal of Chemical Technology

JF - Indian Journal of Chemical Technology

IS - 1

ER -

Galvanostatic optimization of polyaniline coating on mild steel in tartrate medium for corrosion protection

Abstract

Bibliographical note

Funding

Keywords

SDU Link

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