Poly(p-Phenylenediamine) as an Inhibitor for Mild Steel in Hydrochloric Acid Medium
Autor(a) principal: | |
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Data de Publicação: | 2012 |
Outros Autores: | , |
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=S0872-19042012000100006 |
Resumo: | The corrosion behavior of mild steel (MS) in HCl solution containing various concentrations of electropolymerized P(p-phenylenediamine), P(pPD), has been investigated using weight loss and potentiodynamic polarization techniques. The data obtained from the two techniques are comparable and showed that the presence of P(pPD) in the acid solutions suppresses the corrosion rate of MS indicating that these polymers act as corrosion inhibitors (predominantly as anodic inhibitors). The inhibition efficiency (IE%) of the polymer enhances with increasing their concentrations and decrease with an increase in temperature. The inhibition occurs through adsorption and formation of barrier film on the metal surface which separates the metal from direct contact with the corrosive medium and hence protects the metal against the corrosion. The adsorption followed the Langmuir isotherm. The thermodynamic functions of the adsorption and dissolution processes were evaluated. |
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Poly(p-Phenylenediamine) as an Inhibitor for Mild Steel in Hydrochloric Acid Mediumcorrosioninhibitionprotection efficiencymild steelLangmuir isothermThe corrosion behavior of mild steel (MS) in HCl solution containing various concentrations of electropolymerized P(p-phenylenediamine), P(pPD), has been investigated using weight loss and potentiodynamic polarization techniques. The data obtained from the two techniques are comparable and showed that the presence of P(pPD) in the acid solutions suppresses the corrosion rate of MS indicating that these polymers act as corrosion inhibitors (predominantly as anodic inhibitors). The inhibition efficiency (IE%) of the polymer enhances with increasing their concentrations and decrease with an increase in temperature. The inhibition occurs through adsorption and formation of barrier film on the metal surface which separates the metal from direct contact with the corrosive medium and hence protects the metal against the corrosion. The adsorption followed the Langmuir isotherm. The thermodynamic functions of the adsorption and dissolution processes were evaluated.Sociedade Portuguesa de Electroquímica2012-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articletext/htmlhttp://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042012000100006Portugaliae Electrochimica Acta v.30 n.1 2012reponame: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=S0872-19042012000100006Rehim,S.S. Abd ElSayyahand,S.M.Azooz,R.E.info:eu-repo/semantics/openAccess2024-02-06T17:07:09Zoai:scielo:S0872-19042012000100006Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T02:20:11.967580Repositório 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 |
Poly(p-Phenylenediamine) as an Inhibitor for Mild Steel in Hydrochloric Acid Medium |
title |
Poly(p-Phenylenediamine) as an Inhibitor for Mild Steel in Hydrochloric Acid Medium |
spellingShingle |
Poly(p-Phenylenediamine) as an Inhibitor for Mild Steel in Hydrochloric Acid Medium Rehim,S.S. Abd El corrosion inhibition protection efficiency mild steel Langmuir isotherm |
title_short |
Poly(p-Phenylenediamine) as an Inhibitor for Mild Steel in Hydrochloric Acid Medium |
title_full |
Poly(p-Phenylenediamine) as an Inhibitor for Mild Steel in Hydrochloric Acid Medium |
title_fullStr |
Poly(p-Phenylenediamine) as an Inhibitor for Mild Steel in Hydrochloric Acid Medium |
title_full_unstemmed |
Poly(p-Phenylenediamine) as an Inhibitor for Mild Steel in Hydrochloric Acid Medium |
title_sort |
Poly(p-Phenylenediamine) as an Inhibitor for Mild Steel in Hydrochloric Acid Medium |
author |
Rehim,S.S. Abd El |
author_facet |
Rehim,S.S. Abd El Sayyahand,S.M. Azooz,R.E. |
author_role |
author |
author2 |
Sayyahand,S.M. Azooz,R.E. |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Rehim,S.S. Abd El Sayyahand,S.M. Azooz,R.E. |
dc.subject.por.fl_str_mv |
corrosion inhibition protection efficiency mild steel Langmuir isotherm |
topic |
corrosion inhibition protection efficiency mild steel Langmuir isotherm |
description |
The corrosion behavior of mild steel (MS) in HCl solution containing various concentrations of electropolymerized P(p-phenylenediamine), P(pPD), has been investigated using weight loss and potentiodynamic polarization techniques. The data obtained from the two techniques are comparable and showed that the presence of P(pPD) in the acid solutions suppresses the corrosion rate of MS indicating that these polymers act as corrosion inhibitors (predominantly as anodic inhibitors). The inhibition efficiency (IE%) of the polymer enhances with increasing their concentrations and decrease with an increase in temperature. The inhibition occurs through adsorption and formation of barrier film on the metal surface which separates the metal from direct contact with the corrosive medium and hence protects the metal against the corrosion. The adsorption followed the Langmuir isotherm. The thermodynamic functions of the adsorption and dissolution processes were evaluated. |
publishDate |
2012 |
dc.date.none.fl_str_mv |
2012-01-01 |
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=S0872-19042012000100006 |
url |
http://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042012000100006 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
http://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042012000100006 |
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.30 n.1 2012 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 |
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1799137290903093248 |