Thermodynamic characterisation of steel corrosion for the corrosion inhibition of steel in sulphuric acid solutions by artemisia

Detalhes bibliográficos
Autor(a) principal: Bouklah,M.
Data de Publicação: 2006
Outros Autores: Hammouti,B.
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=S0872-19042006000400006
Resumo: The effect of natural occurring extract of artemisia on the corrosion of steel in 0.5 M H2SO4 in the temperature range 298 - 353 K is studied by weight loss method, electrochemical polarisation and linear polarisation Rp measurements. Results obtained reveal that extract reduces the corrosion rate. The inhibition efficiency increases with the increase of artemisia content at 10 g/L to reach 95% and 99% at 298 and 353 K, respectively. Results obtained by gravimetric and electrochemical polarisation are in good agreement. Polarisation studies clearly reveal that the presence of the natural artemisia does not change the mechanism of the hydrogen evolution reaction and acts as a mixed type inhibitor. The inhibition efficiency increases with temperature. The adsorption of artemisia on the steel follows Langmuir adsorption isotherm.
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spelling Thermodynamic characterisation of steel corrosion for the corrosion inhibition of steel in sulphuric acid solutions by artemisiasteelartemisiainhibitioncorrosionacidnatural substanceThe effect of natural occurring extract of artemisia on the corrosion of steel in 0.5 M H2SO4 in the temperature range 298 - 353 K is studied by weight loss method, electrochemical polarisation and linear polarisation Rp measurements. Results obtained reveal that extract reduces the corrosion rate. The inhibition efficiency increases with the increase of artemisia content at 10 g/L to reach 95% and 99% at 298 and 353 K, respectively. Results obtained by gravimetric and electrochemical polarisation are in good agreement. Polarisation studies clearly reveal that the presence of the natural artemisia does not change the mechanism of the hydrogen evolution reaction and acts as a mixed type inhibitor. The inhibition efficiency increases with temperature. The adsorption of artemisia on the steel follows Langmuir adsorption isotherm.Sociedade Portuguesa de Electroquímica2006-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articletext/htmlhttp://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042006000400006Portugaliae Electrochimica Acta v.24 n.4 2006reponame: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=S0872-19042006000400006Bouklah,M.Hammouti,B.info:eu-repo/semantics/openAccess2024-02-06T17:06:50Zoai:scielo:S0872-19042006000400006Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T02:20:01.559533Repositório 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 Thermodynamic characterisation of steel corrosion for the corrosion inhibition of steel in sulphuric acid solutions by artemisia
title Thermodynamic characterisation of steel corrosion for the corrosion inhibition of steel in sulphuric acid solutions by artemisia
spellingShingle Thermodynamic characterisation of steel corrosion for the corrosion inhibition of steel in sulphuric acid solutions by artemisia
Bouklah,M.
steel
artemisia
inhibition
corrosion
acid
natural substance
title_short Thermodynamic characterisation of steel corrosion for the corrosion inhibition of steel in sulphuric acid solutions by artemisia
title_full Thermodynamic characterisation of steel corrosion for the corrosion inhibition of steel in sulphuric acid solutions by artemisia
title_fullStr Thermodynamic characterisation of steel corrosion for the corrosion inhibition of steel in sulphuric acid solutions by artemisia
title_full_unstemmed Thermodynamic characterisation of steel corrosion for the corrosion inhibition of steel in sulphuric acid solutions by artemisia
title_sort Thermodynamic characterisation of steel corrosion for the corrosion inhibition of steel in sulphuric acid solutions by artemisia
author Bouklah,M.
author_facet Bouklah,M.
Hammouti,B.
author_role author
author2 Hammouti,B.
author2_role author
dc.contributor.author.fl_str_mv Bouklah,M.
Hammouti,B.
dc.subject.por.fl_str_mv steel
artemisia
inhibition
corrosion
acid
natural substance
topic steel
artemisia
inhibition
corrosion
acid
natural substance
description The effect of natural occurring extract of artemisia on the corrosion of steel in 0.5 M H2SO4 in the temperature range 298 - 353 K is studied by weight loss method, electrochemical polarisation and linear polarisation Rp measurements. Results obtained reveal that extract reduces the corrosion rate. The inhibition efficiency increases with the increase of artemisia content at 10 g/L to reach 95% and 99% at 298 and 353 K, respectively. Results obtained by gravimetric and electrochemical polarisation are in good agreement. Polarisation studies clearly reveal that the presence of the natural artemisia does not change the mechanism of the hydrogen evolution reaction and acts as a mixed type inhibitor. The inhibition efficiency increases with temperature. The adsorption of artemisia on the steel follows Langmuir adsorption isotherm.
publishDate 2006
dc.date.none.fl_str_mv 2006-01-01
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=S0872-19042006000400006
url http://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042006000400006
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv http://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042006000400006
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.24 n.4 2006
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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