Corrosion resistance of chromium and zinc platings by EIS

The corrosion behavior of chromium and zinc industrial coatings was investigated in 3%wt NaCl solution using electrochemical impedance spectroscopy technique. In order to determine the mechanisms of protection and failure of these coatings, we have correlated the polarization resistance in time func...

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Autores:
Magda Marcela Torres Luque; Universidad de los Andes
Jhon Jairo Olaya Flórez; Universidad Nacional de Colombia
Hugo Del Luján Ascolani; Centro Nacional de Energía Atómica de Argentina
Tipo de recurso:
Fecha de publicación:
2011
Institución:
Universidad del Norte
Repositorio:
Repositorio Uninorte
Idioma:
spa
OAI Identifier:
oai:manglar.uninorte.edu.co:10584/4168
Acceso en línea:
http://rcientificas.uninorte.edu.co/index.php/ingenieria/article/view/3618
http://hdl.handle.net/10584/4168
Palabra clave:
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http://purl.org/coar/access_right/c_abf2
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spelling Magda Marcela Torres Luque; Universidad de los AndesJhon Jairo Olaya Flórez; Universidad Nacional de ColombiaHugo Del Luján Ascolani; Centro Nacional de Energía Atómica de ArgentinaColombia2013-08-31T23:11:06Z2013-08-31T23:11:06Z2011-12-11http://rcientificas.uninorte.edu.co/index.php/ingenieria/article/view/3618http://hdl.handle.net/10584/4168The corrosion behavior of chromium and zinc industrial coatings was investigated in 3%wt NaCl solution using electrochemical impedance spectroscopy technique. In order to determine the mechanisms of protection and failure of these coatings, we have correlated the polarization resistance in time function, with the morphology and chemical composition. To do this, we characterized the microstructure of the coatings by scanning electron microscopy, the crystalline phases with X-ray diffraction and chemical composition, before and after exposure to a corrosive environment, by X-ray photoelectron spectroscopy and Auger electron spectroscopy. Overall, both coatings (Cr and Zn) showed degradation with the immersion time, due to microstructure defects, however, the protective and failure mechanisms are different for each system. These details are discussed in this research.Se ha estudiado el comportamiento frente a la corrosión de recubrimientos electrolíticos industriales de cromo y zinc mediante la técnica de espectroscopia de impedancia electroquímica en electrólito de NaCl al 3% en peso. Con el objetivo de determinar los mecanismos de protección y de falla de estos recubrimientos se ha correlacionado la resistencia a la polarización en el tiempo, con la morfología y la composición química. Para ello, los recubrimientos fueron caracterizados mediante microscopia electrónica de barrido, difracción de rayos X, espectroscopia de fotoelectrones de rayos X y espectroscopia de electrones Auger. Ambos recubrimientos muestran degradación en el tiempo de ensayo debido a los defectos presentes en su microestructura, sin embargo, el mecanismo de protección y, por tanto, de falla es diferente para cada sistema. Estos detalles son discutidos en esta investigación.application/pdfspaUniversidad del NorteRevista Científica Ingeniería y Desarrollo; Vol 29, No 2 (2011): Julio - Diciembre; 170-185instname:Universidad del Nortereponame:Repositorio Digital de la Universidad del NorteCorrosion resistance of chromium and zinc platings by EISResistencia a la corrosión de recubrimientos electroquímicos de cromo y zinc mediante EIEarticlepublishedVersionhttp://purl.org/coar/version/c_970fb48d4fbd8a85http://purl.org/coar/resource_type/c_6501http://purl.org/coar/access_right/c_abf210584/4168oai:172.16.14.36:10584/41682015-10-07 01:47:20.036Repositorio Digital de la Universidad del Nortemauribe@uninorte.edu.co
dc.title.none.fl_str_mv Corrosion resistance of chromium and zinc platings by EIS
Resistencia a la corrosión de recubrimientos electroquímicos de cromo y zinc mediante EIE
title Corrosion resistance of chromium and zinc platings by EIS
spellingShingle Corrosion resistance of chromium and zinc platings by EIS
title_short Corrosion resistance of chromium and zinc platings by EIS
title_full Corrosion resistance of chromium and zinc platings by EIS
title_fullStr Corrosion resistance of chromium and zinc platings by EIS
title_full_unstemmed Corrosion resistance of chromium and zinc platings by EIS
title_sort Corrosion resistance of chromium and zinc platings by EIS
dc.creator.fl_str_mv Magda Marcela Torres Luque; Universidad de los Andes
Jhon Jairo Olaya Flórez; Universidad Nacional de Colombia
Hugo Del Luján Ascolani; Centro Nacional de Energía Atómica de Argentina
dc.contributor.author.none.fl_str_mv Magda Marcela Torres Luque; Universidad de los Andes
Jhon Jairo Olaya Flórez; Universidad Nacional de Colombia
Hugo Del Luján Ascolani; Centro Nacional de Energía Atómica de Argentina
description The corrosion behavior of chromium and zinc industrial coatings was investigated in 3%wt NaCl solution using electrochemical impedance spectroscopy technique. In order to determine the mechanisms of protection and failure of these coatings, we have correlated the polarization resistance in time function, with the morphology and chemical composition. To do this, we characterized the microstructure of the coatings by scanning electron microscopy, the crystalline phases with X-ray diffraction and chemical composition, before and after exposure to a corrosive environment, by X-ray photoelectron spectroscopy and Auger electron spectroscopy. Overall, both coatings (Cr and Zn) showed degradation with the immersion time, due to microstructure defects, however, the protective and failure mechanisms are different for each system. These details are discussed in this research.
publishDate 2011
dc.date.issued.none.fl_str_mv 2011-12-11
dc.date.accessioned.none.fl_str_mv 2013-08-31T23:11:06Z
dc.date.available.none.fl_str_mv 2013-08-31T23:11:06Z
dc.type.none.fl_str_mv article
dc.type.coarversion.fl_str_mv http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.coar.fl_str_mv http://purl.org/coar/resource_type/c_6501
dc.type.hasVersion.none.fl_str_mv publishedVersion
dc.identifier.other.none.fl_str_mv http://rcientificas.uninorte.edu.co/index.php/ingenieria/article/view/3618
dc.identifier.uri.none.fl_str_mv http://hdl.handle.net/10584/4168
url http://rcientificas.uninorte.edu.co/index.php/ingenieria/article/view/3618
http://hdl.handle.net/10584/4168
dc.language.iso.none.fl_str_mv spa
language spa
dc.relation.ispartof.none.fl_str_mv Revista Científica Ingeniería y Desarrollo; Vol 29, No 2 (2011): Julio - Diciembre; 170-185
dc.rights.coar.fl_str_mv http://purl.org/coar/access_right/c_abf2
rights_invalid_str_mv http://purl.org/coar/access_right/c_abf2
dc.format.none.fl_str_mv application/pdf
dc.coverage.spatial.none.fl_str_mv Colombia
dc.publisher.none.fl_str_mv Universidad del Norte
publisher.none.fl_str_mv Universidad del Norte
dc.source.none.fl_str_mv instname:Universidad del Norte
reponame:Repositorio Digital de la Universidad del Norte
instname_str Universidad del Norte
institution Universidad del Norte
reponame_str Repositorio Digital de la Universidad del Norte
collection Repositorio Digital de la Universidad del Norte
repository.name.fl_str_mv Repositorio Digital de la Universidad del Norte
repository.mail.fl_str_mv mauribe@uninorte.edu.co
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