Pericarp of the Fruit of Garcinia Mangostana as Corrosion Inhibitor for Mild Steel in Hydrochloric Acid Medium

Detalhes bibliográficos
Autor(a) principal: Kumar,K.P. Vinod
Data de Publicação: 2010
Outros Autores: Pillai,M.S. Narayanan, Thusnavis,G. Rexin
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=S0872-19042010000600002
Resumo: The corrosion inhibition effect of acid extract of the pericarp of the fruit Garcinia mangostana on mild steel in hydrochloric acid medium is studied. Using weight-loss data, corrosion rate (CR) and thermodynamic parameters such as energy of activation for corrosion of mild steel (E), heat of adsorption of the inhibitors on the metal surface (Q) and change in free energy (∆G) are calculated. Adsorption isotherm is also recorded between log C and θ. Electrochemical parameters are evaluated from AC impedance and Tafel polarization studies in the presence and absence of different concentrations of inhibitor. Infra-red spectra are recorded for the extract and the adsorption product to find out the changes in the functional group frequencies of the organic components of the extract. The surface morphological changes are analysed using the SEM images. The entire study shows that the pericarp extract of the fruit G. mangostana is a non-toxic, cost-effective corrosion inhibitor for mild steel in acid medium.
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spelling Pericarp of the Fruit of Garcinia Mangostana as Corrosion Inhibitor for Mild Steel in Hydrochloric Acid Mediumcorrosionmild steelG. mangostanaTafel polarizationimpedanceSEMThe corrosion inhibition effect of acid extract of the pericarp of the fruit Garcinia mangostana on mild steel in hydrochloric acid medium is studied. Using weight-loss data, corrosion rate (CR) and thermodynamic parameters such as energy of activation for corrosion of mild steel (E), heat of adsorption of the inhibitors on the metal surface (Q) and change in free energy (∆G) are calculated. Adsorption isotherm is also recorded between log C and θ. Electrochemical parameters are evaluated from AC impedance and Tafel polarization studies in the presence and absence of different concentrations of inhibitor. Infra-red spectra are recorded for the extract and the adsorption product to find out the changes in the functional group frequencies of the organic components of the extract. The surface morphological changes are analysed using the SEM images. The entire study shows that the pericarp extract of the fruit G. mangostana is a non-toxic, cost-effective corrosion inhibitor for mild steel in acid medium.Sociedade Portuguesa de Electroquímica2010-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articletext/htmlhttp://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042010000600002Portugaliae Electrochimica Acta v.28 n.6 2010reponame: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=S0872-19042010000600002Kumar,K.P. VinodPillai,M.S. NarayananThusnavis,G. Rexininfo:eu-repo/semantics/openAccess2024-02-06T17:07:06Zoai:scielo:S0872-19042010000600002Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T02:20:09.785599Repositório 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 Pericarp of the Fruit of Garcinia Mangostana as Corrosion Inhibitor for Mild Steel in Hydrochloric Acid Medium
title Pericarp of the Fruit of Garcinia Mangostana as Corrosion Inhibitor for Mild Steel in Hydrochloric Acid Medium
spellingShingle Pericarp of the Fruit of Garcinia Mangostana as Corrosion Inhibitor for Mild Steel in Hydrochloric Acid Medium
Kumar,K.P. Vinod
corrosion
mild steel
G. mangostana
Tafel polarization
impedance
SEM
title_short Pericarp of the Fruit of Garcinia Mangostana as Corrosion Inhibitor for Mild Steel in Hydrochloric Acid Medium
title_full Pericarp of the Fruit of Garcinia Mangostana as Corrosion Inhibitor for Mild Steel in Hydrochloric Acid Medium
title_fullStr Pericarp of the Fruit of Garcinia Mangostana as Corrosion Inhibitor for Mild Steel in Hydrochloric Acid Medium
title_full_unstemmed Pericarp of the Fruit of Garcinia Mangostana as Corrosion Inhibitor for Mild Steel in Hydrochloric Acid Medium
title_sort Pericarp of the Fruit of Garcinia Mangostana as Corrosion Inhibitor for Mild Steel in Hydrochloric Acid Medium
author Kumar,K.P. Vinod
author_facet Kumar,K.P. Vinod
Pillai,M.S. Narayanan
Thusnavis,G. Rexin
author_role author
author2 Pillai,M.S. Narayanan
Thusnavis,G. Rexin
author2_role author
author
dc.contributor.author.fl_str_mv Kumar,K.P. Vinod
Pillai,M.S. Narayanan
Thusnavis,G. Rexin
dc.subject.por.fl_str_mv corrosion
mild steel
G. mangostana
Tafel polarization
impedance
SEM
topic corrosion
mild steel
G. mangostana
Tafel polarization
impedance
SEM
description The corrosion inhibition effect of acid extract of the pericarp of the fruit Garcinia mangostana on mild steel in hydrochloric acid medium is studied. Using weight-loss data, corrosion rate (CR) and thermodynamic parameters such as energy of activation for corrosion of mild steel (E), heat of adsorption of the inhibitors on the metal surface (Q) and change in free energy (∆G) are calculated. Adsorption isotherm is also recorded between log C and θ. Electrochemical parameters are evaluated from AC impedance and Tafel polarization studies in the presence and absence of different concentrations of inhibitor. Infra-red spectra are recorded for the extract and the adsorption product to find out the changes in the functional group frequencies of the organic components of the extract. The surface morphological changes are analysed using the SEM images. The entire study shows that the pericarp extract of the fruit G. mangostana is a non-toxic, cost-effective corrosion inhibitor for mild steel in acid medium.
publishDate 2010
dc.date.none.fl_str_mv 2010-01-01
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=S0872-19042010000600002
url http://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042010000600002
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv http://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042010000600002
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.28 n.6 2010
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
institution RCAAP
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
repository.mail.fl_str_mv
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