Cationic Surfactant - Zn2+ Systems as Mixed Corrosion Inhibitors for Carbon Steel in a Sodium Chloride Corrosive Medium
Autor(a) principal: | |
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Data de Publicação: | 2018 |
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=S0872-19042018000400004 |
Resumo: | Benzyl dimethyl dodecyl ammonium chloride-zinc ion system, as quaternary ammonium salt (QA-Zn2+), was investigated as corrosion inhibitor for carbon steel in a 2.0 M sodium chloride solution, by different techniques such as weight loss, open circuit potential, potentiodynamic polarization and electrochemical impedance spectroscopic techniques. The inhibition efficiency of the used system (QA-Zn2+) increases with increasing mixed inhibitor concentrations and with rising temperatures. A synergistic effect exists between QA and Zn2+. Potentiodynamic polarization curves indicate that the used system mainly acts as an anodic mixed inhibitor. The polarization resistance values were (Rp) increased, and the interface capacitance (Cdl) was decreased in the mixed inhibitor system (QA- Zn2+) presence, more than in the case of individual inhibitors. The corrosion inhibition is due to the adsorption of (QA-Zn2+) onto the metal surface, and the formation of a barrier film that separates the metal from the corrosive medium. The maximum inhibition efficiency of 98% was obtained at 200 QA and 50 ppm Zn2+ of the mixed inhibitor system, due to a synergistic effect. |
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Cationic Surfactant - Zn2+ Systems as Mixed Corrosion Inhibitors for Carbon Steel in a Sodium Chloride Corrosive Mediumsteel corrosion inhibitorssurfactantquaternary ammonium saltsynergistic effectEISBenzyl dimethyl dodecyl ammonium chloride-zinc ion system, as quaternary ammonium salt (QA-Zn2+), was investigated as corrosion inhibitor for carbon steel in a 2.0 M sodium chloride solution, by different techniques such as weight loss, open circuit potential, potentiodynamic polarization and electrochemical impedance spectroscopic techniques. The inhibition efficiency of the used system (QA-Zn2+) increases with increasing mixed inhibitor concentrations and with rising temperatures. A synergistic effect exists between QA and Zn2+. Potentiodynamic polarization curves indicate that the used system mainly acts as an anodic mixed inhibitor. The polarization resistance values were (Rp) increased, and the interface capacitance (Cdl) was decreased in the mixed inhibitor system (QA- Zn2+) presence, more than in the case of individual inhibitors. The corrosion inhibition is due to the adsorption of (QA-Zn2+) onto the metal surface, and the formation of a barrier film that separates the metal from the corrosive medium. The maximum inhibition efficiency of 98% was obtained at 200 QA and 50 ppm Zn2+ of the mixed inhibitor system, due to a synergistic effect.Sociedade Portuguesa de Electroquímica2018-07-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articletext/htmlhttp://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042018000400004Portugaliae Electrochimica Acta v.36 n.4 2018reponame: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=S0872-19042018000400004Abdel Hameed,Reda S.info:eu-repo/semantics/openAccess2024-02-06T17:07:27Zoai:scielo:S0872-19042018000400004Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T02:20:23.321908Repositório 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 |
Cationic Surfactant - Zn2+ Systems as Mixed Corrosion Inhibitors for Carbon Steel in a Sodium Chloride Corrosive Medium |
title |
Cationic Surfactant - Zn2+ Systems as Mixed Corrosion Inhibitors for Carbon Steel in a Sodium Chloride Corrosive Medium |
spellingShingle |
Cationic Surfactant - Zn2+ Systems as Mixed Corrosion Inhibitors for Carbon Steel in a Sodium Chloride Corrosive Medium Abdel Hameed,Reda S. steel corrosion inhibitors surfactant quaternary ammonium salt synergistic effect EIS |
title_short |
Cationic Surfactant - Zn2+ Systems as Mixed Corrosion Inhibitors for Carbon Steel in a Sodium Chloride Corrosive Medium |
title_full |
Cationic Surfactant - Zn2+ Systems as Mixed Corrosion Inhibitors for Carbon Steel in a Sodium Chloride Corrosive Medium |
title_fullStr |
Cationic Surfactant - Zn2+ Systems as Mixed Corrosion Inhibitors for Carbon Steel in a Sodium Chloride Corrosive Medium |
title_full_unstemmed |
Cationic Surfactant - Zn2+ Systems as Mixed Corrosion Inhibitors for Carbon Steel in a Sodium Chloride Corrosive Medium |
title_sort |
Cationic Surfactant - Zn2+ Systems as Mixed Corrosion Inhibitors for Carbon Steel in a Sodium Chloride Corrosive Medium |
author |
Abdel Hameed,Reda S. |
author_facet |
Abdel Hameed,Reda S. |
author_role |
author |
dc.contributor.author.fl_str_mv |
Abdel Hameed,Reda S. |
dc.subject.por.fl_str_mv |
steel corrosion inhibitors surfactant quaternary ammonium salt synergistic effect EIS |
topic |
steel corrosion inhibitors surfactant quaternary ammonium salt synergistic effect EIS |
description |
Benzyl dimethyl dodecyl ammonium chloride-zinc ion system, as quaternary ammonium salt (QA-Zn2+), was investigated as corrosion inhibitor for carbon steel in a 2.0 M sodium chloride solution, by different techniques such as weight loss, open circuit potential, potentiodynamic polarization and electrochemical impedance spectroscopic techniques. The inhibition efficiency of the used system (QA-Zn2+) increases with increasing mixed inhibitor concentrations and with rising temperatures. A synergistic effect exists between QA and Zn2+. Potentiodynamic polarization curves indicate that the used system mainly acts as an anodic mixed inhibitor. The polarization resistance values were (Rp) increased, and the interface capacitance (Cdl) was decreased in the mixed inhibitor system (QA- Zn2+) presence, more than in the case of individual inhibitors. The corrosion inhibition is due to the adsorption of (QA-Zn2+) onto the metal surface, and the formation of a barrier film that separates the metal from the corrosive medium. The maximum inhibition efficiency of 98% was obtained at 200 QA and 50 ppm Zn2+ of the mixed inhibitor system, due to a synergistic effect. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018-07-01 |
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=S0872-19042018000400004 |
url |
http://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042018000400004 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
http://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042018000400004 |
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.36 n.4 2018 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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1799137291892948992 |