Electrochemical Estimation of the Corrosion Rate of Magnesium/Aluminium Alloys

The corrosion rate of AZ31, AZ80, and AZ91D magnesium/aluminium alloys immersed in 3.5 wt.% NaCl was determined comparing gravimetric and electrochemical measurements. The findings revealed that, for all investigated materials, a fraction of the metallic surface exposed to the corrosive medium did n...

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Autores: Pardo, A., Feliú Jr., S., Merino, C., Arrabal, R., Matykina, E.
Tipo de recurso: artículo
Fecha de publicación:2010
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/114108
Acceso en línea:http://hdl.handle.net/10261/114108
Access Level:acceso abierto
Palabra clave:Alloys aluminium
Electrochemical corrosion
AZ31 alloy
Corrosion
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spelling Electrochemical Estimation of the Corrosion Rate of Magnesium/Aluminium AlloysPardo, A.Feliú Jr., S.Merino, C.Arrabal, R.Matykina, E.Alloys aluminiumElectrochemical corrosionAZ31 alloyCorrosionThe corrosion rate of AZ31, AZ80, and AZ91D magnesium/aluminium alloys immersed in 3.5 wt.% NaCl was determined comparing gravimetric and electrochemical measurements. The findings revealed that, for all investigated materials, a fraction of the metallic surface exposed to the corrosive medium did not reveal a normal electrochemical response to the applied signal. This may be associated with phenomena such as partial disintegration of specimens into fine metallic particles, electrochemical formation of ions, and/or anomalous chemical attack occurring simultaneously with the normal electrochemical corrosion attack. The abnormal electrochemical behaviour was more evident for lower amounts of aluminium in the bulk composition of the investigated materials. Thus, the electrochemical estimates of pure Mg and the AZ31 alloy were not reliable and tended to underestimate corrosion losses.Peer ReviewedHindawi Publishing Corporation2015201520102015info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501http://hdl.handle.net/10261/114108reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglésinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/1141082026-05-22T06:33:51Z
dc.title.none.fl_str_mv Electrochemical Estimation of the Corrosion Rate of Magnesium/Aluminium Alloys
title Electrochemical Estimation of the Corrosion Rate of Magnesium/Aluminium Alloys
spellingShingle Electrochemical Estimation of the Corrosion Rate of Magnesium/Aluminium Alloys
Pardo, A.
Alloys aluminium
Electrochemical corrosion
AZ31 alloy
Corrosion
title_short Electrochemical Estimation of the Corrosion Rate of Magnesium/Aluminium Alloys
title_full Electrochemical Estimation of the Corrosion Rate of Magnesium/Aluminium Alloys
title_fullStr Electrochemical Estimation of the Corrosion Rate of Magnesium/Aluminium Alloys
title_full_unstemmed Electrochemical Estimation of the Corrosion Rate of Magnesium/Aluminium Alloys
title_sort Electrochemical Estimation of the Corrosion Rate of Magnesium/Aluminium Alloys
dc.creator.none.fl_str_mv Pardo, A.
Feliú Jr., S.
Merino, C.
Arrabal, R.
Matykina, E.
author Pardo, A.
author_facet Pardo, A.
Feliú Jr., S.
Merino, C.
Arrabal, R.
Matykina, E.
author_role author
author2 Feliú Jr., S.
Merino, C.
Arrabal, R.
Matykina, E.
author2_role author
author
author
author
dc.subject.none.fl_str_mv Alloys aluminium
Electrochemical corrosion
AZ31 alloy
Corrosion
topic Alloys aluminium
Electrochemical corrosion
AZ31 alloy
Corrosion
description The corrosion rate of AZ31, AZ80, and AZ91D magnesium/aluminium alloys immersed in 3.5 wt.% NaCl was determined comparing gravimetric and electrochemical measurements. The findings revealed that, for all investigated materials, a fraction of the metallic surface exposed to the corrosive medium did not reveal a normal electrochemical response to the applied signal. This may be associated with phenomena such as partial disintegration of specimens into fine metallic particles, electrochemical formation of ions, and/or anomalous chemical attack occurring simultaneously with the normal electrochemical corrosion attack. The abnormal electrochemical behaviour was more evident for lower amounts of aluminium in the bulk composition of the investigated materials. Thus, the electrochemical estimates of pure Mg and the AZ31 alloy were not reliable and tended to underestimate corrosion losses.
publishDate 2010
dc.date.none.fl_str_mv 2010
2015
2015
2015
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/114108
url http://hdl.handle.net/10261/114108
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Hindawi Publishing Corporation
publisher.none.fl_str_mv Hindawi Publishing Corporation
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,811543

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