Corrosion Inhibition of Carbon Steel in Well Water by L-Cysteine-Zn2+ System

Detalhes bibliográficos
Autor(a) principal: Thangakani,J. A.
Data de Publicação: 2017
Outros Autores: Rajendran,S., Sathiabama,J., Rathish,R. J., Santhanaprabha,S.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042017000100002
Resumo: The environmental friendly inhibitor system L-cysteine-Zn2+ has been investigated by weight loss method. A synergistic effect exists between L-cysteine and Zn2+ system. The formulation consisting of 250 ppm of L-cysteine and 50 ppm of Zn2+ offers an excellent inhibition efficiency of 99%. Polarization study reveals that this formulation functions as anodic inhibitor. AC impedance spectra reveal that a protective film is formed on the metal surface. FTIR spectra study leads to the conclusion that the Fe2+L- cysteine complex formed on the anodic sites of the metal surface controlled the anodic reaction, and Zn(OH)2 formed on the cathodic sites of the metal surface controlled the cathodic reaction. A suitable mechanism of corrosion inhibition is proposed based on the results obtained from weight loss study and surface analysis technique. Synergism parameters have been calculated. They are found to be greater than 1, suggesting that a synergistic effect exists between L-cysteine and Zn2+.
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spelling Corrosion Inhibition of Carbon Steel in Well Water by L-Cysteine-Zn2+ SystemL-cysteine corrosion inhibitorsynergistic effectcarbon steelwell waterzinc ionaminoacidsThe environmental friendly inhibitor system L-cysteine-Zn2+ has been investigated by weight loss method. A synergistic effect exists between L-cysteine and Zn2+ system. The formulation consisting of 250 ppm of L-cysteine and 50 ppm of Zn2+ offers an excellent inhibition efficiency of 99%. Polarization study reveals that this formulation functions as anodic inhibitor. AC impedance spectra reveal that a protective film is formed on the metal surface. FTIR spectra study leads to the conclusion that the Fe2+L- cysteine complex formed on the anodic sites of the metal surface controlled the anodic reaction, and Zn(OH)2 formed on the cathodic sites of the metal surface controlled the cathodic reaction. A suitable mechanism of corrosion inhibition is proposed based on the results obtained from weight loss study and surface analysis technique. Synergism parameters have been calculated. They are found to be greater than 1, suggesting that a synergistic effect exists between L-cysteine and Zn2+.Sociedade Portuguesa de Electroquímica2017-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articletext/htmlhttp://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042017000100002Portugaliae Electrochimica Acta v.35 n.1 2017reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAPenghttp://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042017000100002Thangakani,J. A.Rajendran,S.Sathiabama,J.Rathish,R. J.Santhanaprabha,S.info:eu-repo/semantics/openAccess2024-02-06T17:07:23Zoai:scielo:S0872-19042017000100002Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T02:20:19.266952Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Corrosion Inhibition of Carbon Steel in Well Water by L-Cysteine-Zn2+ System
title Corrosion Inhibition of Carbon Steel in Well Water by L-Cysteine-Zn2+ System
spellingShingle Corrosion Inhibition of Carbon Steel in Well Water by L-Cysteine-Zn2+ System
Thangakani,J. A.
L-cysteine corrosion inhibitor
synergistic effect
carbon steel
well water
zinc ion
aminoacids
title_short Corrosion Inhibition of Carbon Steel in Well Water by L-Cysteine-Zn2+ System
title_full Corrosion Inhibition of Carbon Steel in Well Water by L-Cysteine-Zn2+ System
title_fullStr Corrosion Inhibition of Carbon Steel in Well Water by L-Cysteine-Zn2+ System
title_full_unstemmed Corrosion Inhibition of Carbon Steel in Well Water by L-Cysteine-Zn2+ System
title_sort Corrosion Inhibition of Carbon Steel in Well Water by L-Cysteine-Zn2+ System
author Thangakani,J. A.
author_facet Thangakani,J. A.
Rajendran,S.
Sathiabama,J.
Rathish,R. J.
Santhanaprabha,S.
author_role author
author2 Rajendran,S.
Sathiabama,J.
Rathish,R. J.
Santhanaprabha,S.
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Thangakani,J. A.
Rajendran,S.
Sathiabama,J.
Rathish,R. J.
Santhanaprabha,S.
dc.subject.por.fl_str_mv L-cysteine corrosion inhibitor
synergistic effect
carbon steel
well water
zinc ion
aminoacids
topic L-cysteine corrosion inhibitor
synergistic effect
carbon steel
well water
zinc ion
aminoacids
description The environmental friendly inhibitor system L-cysteine-Zn2+ has been investigated by weight loss method. A synergistic effect exists between L-cysteine and Zn2+ system. The formulation consisting of 250 ppm of L-cysteine and 50 ppm of Zn2+ offers an excellent inhibition efficiency of 99%. Polarization study reveals that this formulation functions as anodic inhibitor. AC impedance spectra reveal that a protective film is formed on the metal surface. FTIR spectra study leads to the conclusion that the Fe2+L- cysteine complex formed on the anodic sites of the metal surface controlled the anodic reaction, and Zn(OH)2 formed on the cathodic sites of the metal surface controlled the cathodic reaction. A suitable mechanism of corrosion inhibition is proposed based on the results obtained from weight loss study and surface analysis technique. Synergism parameters have been calculated. They are found to be greater than 1, suggesting that a synergistic effect exists between L-cysteine and Zn2+.
publishDate 2017
dc.date.none.fl_str_mv 2017-01-01
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042017000100002
url http://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042017000100002
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv http://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042017000100002
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Sociedade Portuguesa de Electroquímica
publisher.none.fl_str_mv Sociedade Portuguesa de Electroquímica
dc.source.none.fl_str_mv Portugaliae Electrochimica Acta v.35 n.1 2017
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
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reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
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