Effect of Cysteine as Environmentally Friendly Inhibitor on AA6061-T6 Corrosion in 0.5 M HCl: Electrochemical and Surface Studies

Kumari P Preethi Kumari P; Prakash Shetty; Nagalaxmi; Dhanya Sunil

doi:10.3103/S1068375520050087

Effect of Cysteine as Environmentally Friendly Inhibitor on AA6061-T6 Corrosion in 0.5 M HCl: Electrochemical and Surface Studies

Kumari P Preethi Kumari P
, Prakash Shetty^*
, Nagalaxmi
, Dhanya Sunil

^*Corresponding author for this work

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

16 Citations (Scopus)

Abstract

Abstract: The inhibitive action of cysteine was investigated against the corrosion of aluminium alloy 6061-T6 (AA6061-T6) in a 0.5 M hydrochloric acidic medium in the temperatures range of 303–323 K using potentiodynamic polarization as well as electrochemical impedance spectroscopy methods. The electrochemical results of the former were validated by the latter. Cysteine showed mixed inhibitor behavior and exhibited good inhibition performance. The thermodynamic properties indicated mixed adsorption behavior of cysteine, which satisfied the Langmuir adsorption isotherm. The surface morphological investigation of both corroded and inhibited specimens was performed using a scanning electron microscopy and atomic force microscope, which revealed the adsorption of cysteine onto the alloy surface.

Original language	English
Pages (from-to)	624-634
Number of pages	11
Journal	Surface Engineering and Applied Electrochemistry
Volume	56
Issue number	5
DOIs	https://doi.org/10.3103/S1068375520050087
Publication status	Published - 01-09-2020

All Science Journal Classification (ASJC) codes

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

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title = "Effect of Cysteine as Environmentally Friendly Inhibitor on AA6061-T6 Corrosion in 0.5 M HCl: Electrochemical and Surface Studies",

abstract = "Abstract: The inhibitive action of cysteine was investigated against the corrosion of aluminium alloy 6061-T6 (AA6061-T6) in a 0.5 M hydrochloric acidic medium in the temperatures range of 303–323 K using potentiodynamic polarization as well as electrochemical impedance spectroscopy methods. The electrochemical results of the former were validated by the latter. Cysteine showed mixed inhibitor behavior and exhibited good inhibition performance. The thermodynamic properties indicated mixed adsorption behavior of cysteine, which satisfied the Langmuir adsorption isotherm. The surface morphological investigation of both corroded and inhibited specimens was performed using a scanning electron microscopy and atomic force microscope, which revealed the adsorption of cysteine onto the alloy surface.",

author = "\{Preethi Kumari P\}, \{Kumari P\} and Prakash Shetty and Nagalaxmi and Dhanya Sunil",

note = "Funding Information: The authors are grateful to Manipal Institute of Technology, Manipal Academy of Higher Education (A Deemed University), Manipal, India, for providing the laboratory facilities. Publisher Copyright: {\textcopyright} 2020, Allerton Press, Inc. Copyright: Copyright 2020 Elsevier B.V., All rights reserved.",

year = "2020",

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doi = "10.3103/S1068375520050087",

language = "English",

volume = "56",

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journal = "Surface Engineering and Applied Electrochemistry",

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TY - JOUR

T1 - Effect of Cysteine as Environmentally Friendly Inhibitor on AA6061-T6 Corrosion in 0.5 M HCl

T2 - Electrochemical and Surface Studies

AU - Preethi Kumari P, Kumari P

AU - Shetty, Prakash

AU - Nagalaxmi, null

AU - Sunil, Dhanya

N1 - Funding Information: The authors are grateful to Manipal Institute of Technology, Manipal Academy of Higher Education (A Deemed University), Manipal, India, for providing the laboratory facilities. Publisher Copyright: © 2020, Allerton Press, Inc. Copyright: Copyright 2020 Elsevier B.V., All rights reserved.

PY - 2020/9/1

Y1 - 2020/9/1

N2 - Abstract: The inhibitive action of cysteine was investigated against the corrosion of aluminium alloy 6061-T6 (AA6061-T6) in a 0.5 M hydrochloric acidic medium in the temperatures range of 303–323 K using potentiodynamic polarization as well as electrochemical impedance spectroscopy methods. The electrochemical results of the former were validated by the latter. Cysteine showed mixed inhibitor behavior and exhibited good inhibition performance. The thermodynamic properties indicated mixed adsorption behavior of cysteine, which satisfied the Langmuir adsorption isotherm. The surface morphological investigation of both corroded and inhibited specimens was performed using a scanning electron microscopy and atomic force microscope, which revealed the adsorption of cysteine onto the alloy surface.

AB - Abstract: The inhibitive action of cysteine was investigated against the corrosion of aluminium alloy 6061-T6 (AA6061-T6) in a 0.5 M hydrochloric acidic medium in the temperatures range of 303–323 K using potentiodynamic polarization as well as electrochemical impedance spectroscopy methods. The electrochemical results of the former were validated by the latter. Cysteine showed mixed inhibitor behavior and exhibited good inhibition performance. The thermodynamic properties indicated mixed adsorption behavior of cysteine, which satisfied the Langmuir adsorption isotherm. The surface morphological investigation of both corroded and inhibited specimens was performed using a scanning electron microscopy and atomic force microscope, which revealed the adsorption of cysteine onto the alloy surface.

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UR - https://www.scopus.com/pages/publications/85094672848#tab=citedBy

U2 - 10.3103/S1068375520050087

DO - 10.3103/S1068375520050087

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VL - 56

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EP - 634

JO - Surface Engineering and Applied Electrochemistry

JF - Surface Engineering and Applied Electrochemistry

IS - 5

ER -

Effect of Cysteine as Environmentally Friendly Inhibitor on AA6061-T6 Corrosion in 0.5 M HCl: Electrochemical and Surface Studies

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