Chemical and electrochemical coloration of stainless steel and pitting corrosion resistance studies

Detalhes bibliográficos
Autor(a) principal: Kikuti,Elaine
Data de Publicação: 2004
Outros Autores: Conrrado,Rosangela, Bocchi,Nerilso, Biaggio,Sonia R., Rocha-Filho,Romeu C.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Journal of the Brazilian Chemical Society (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532004000400005
Resumo: Colored oxide films were grown on AISI-304 stainless-steel samples by chemical and electrochemical methods using different coloring times. The electrochemical methods involved the use of alternating potential pulses and triangular current scans. The colored films were characterized in the visible region by reflectance spectrophotometry. Pitting corrosion resistance of the different colored steel samples was evaluated at 25 ºC in 0.62 mol L-1 NaCl, using potentiodynamic polarization curves, and in 0.4 mol L-1 HCl, by electrochemical impedance spectroscopy. Independently of the coloring method used, the colored oxide films showed a protective effect against pitting corrosion only in the first hours of exposition. For longer exposition times (8-10 h) the colored and non-colored steel samples presented similar behaviors.
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spelling Chemical and electrochemical coloration of stainless steel and pitting corrosion resistance studiesAISI-304 stainless steelcolored oxide filmssteel coloring methodspitting corrosionColored oxide films were grown on AISI-304 stainless-steel samples by chemical and electrochemical methods using different coloring times. The electrochemical methods involved the use of alternating potential pulses and triangular current scans. The colored films were characterized in the visible region by reflectance spectrophotometry. Pitting corrosion resistance of the different colored steel samples was evaluated at 25 ºC in 0.62 mol L-1 NaCl, using potentiodynamic polarization curves, and in 0.4 mol L-1 HCl, by electrochemical impedance spectroscopy. Independently of the coloring method used, the colored oxide films showed a protective effect against pitting corrosion only in the first hours of exposition. For longer exposition times (8-10 h) the colored and non-colored steel samples presented similar behaviors.Sociedade Brasileira de Química2004-08-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532004000400005Journal of the Brazilian Chemical Society v.15 n.4 2004reponame:Journal of the Brazilian Chemical Society (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.1590/S0103-50532004000400005info:eu-repo/semantics/openAccessKikuti,ElaineConrrado,RosangelaBocchi,NerilsoBiaggio,Sonia R.Rocha-Filho,Romeu C.eng2004-09-15T00:00:00Zoai:scielo:S0103-50532004000400005Revistahttp://jbcs.sbq.org.brONGhttps://old.scielo.br/oai/scielo-oai.php||office@jbcs.sbq.org.br1678-47900103-5053opendoar:2004-09-15T00:00Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ)false
dc.title.none.fl_str_mv Chemical and electrochemical coloration of stainless steel and pitting corrosion resistance studies
title Chemical and electrochemical coloration of stainless steel and pitting corrosion resistance studies
spellingShingle Chemical and electrochemical coloration of stainless steel and pitting corrosion resistance studies
Kikuti,Elaine
AISI-304 stainless steel
colored oxide films
steel coloring methods
pitting corrosion
title_short Chemical and electrochemical coloration of stainless steel and pitting corrosion resistance studies
title_full Chemical and electrochemical coloration of stainless steel and pitting corrosion resistance studies
title_fullStr Chemical and electrochemical coloration of stainless steel and pitting corrosion resistance studies
title_full_unstemmed Chemical and electrochemical coloration of stainless steel and pitting corrosion resistance studies
title_sort Chemical and electrochemical coloration of stainless steel and pitting corrosion resistance studies
author Kikuti,Elaine
author_facet Kikuti,Elaine
Conrrado,Rosangela
Bocchi,Nerilso
Biaggio,Sonia R.
Rocha-Filho,Romeu C.
author_role author
author2 Conrrado,Rosangela
Bocchi,Nerilso
Biaggio,Sonia R.
Rocha-Filho,Romeu C.
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Kikuti,Elaine
Conrrado,Rosangela
Bocchi,Nerilso
Biaggio,Sonia R.
Rocha-Filho,Romeu C.
dc.subject.por.fl_str_mv AISI-304 stainless steel
colored oxide films
steel coloring methods
pitting corrosion
topic AISI-304 stainless steel
colored oxide films
steel coloring methods
pitting corrosion
description Colored oxide films were grown on AISI-304 stainless-steel samples by chemical and electrochemical methods using different coloring times. The electrochemical methods involved the use of alternating potential pulses and triangular current scans. The colored films were characterized in the visible region by reflectance spectrophotometry. Pitting corrosion resistance of the different colored steel samples was evaluated at 25 ºC in 0.62 mol L-1 NaCl, using potentiodynamic polarization curves, and in 0.4 mol L-1 HCl, by electrochemical impedance spectroscopy. Independently of the coloring method used, the colored oxide films showed a protective effect against pitting corrosion only in the first hours of exposition. For longer exposition times (8-10 h) the colored and non-colored steel samples presented similar behaviors.
publishDate 2004
dc.date.none.fl_str_mv 2004-08-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532004000400005
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532004000400005
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S0103-50532004000400005
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 Brasileira de Química
publisher.none.fl_str_mv Sociedade Brasileira de Química
dc.source.none.fl_str_mv Journal of the Brazilian Chemical Society v.15 n.4 2004
reponame:Journal of the Brazilian Chemical Society (Online)
instname:Sociedade Brasileira de Química (SBQ)
instacron:SBQ
instname_str Sociedade Brasileira de Química (SBQ)
instacron_str SBQ
institution SBQ
reponame_str Journal of the Brazilian Chemical Society (Online)
collection Journal of the Brazilian Chemical Society (Online)
repository.name.fl_str_mv Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ)
repository.mail.fl_str_mv ||office@jbcs.sbq.org.br
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