The nanostructure and microstructure of steels: Electrochemical Tafel behaviour and atomic force microscopy

Detalhes bibliográficos
Autor(a) principal: Alves, Valéria A.
Data de Publicação: 2005
Outros Autores: Paquim, Ana M. Chiorcea, Cavaleiro, Albano, Brett, Christopher M. A.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10316/5098
https://doi.org/10.1016/j.corsci.2005.05.038
Resumo: The influence of chemical composition and heat treatment on a low-carbon steel, chromium steel and high speed steel has been examined by polarisation curves and electrochemical parameters deduced from the Tafel plots. The electrochemical corrosion resistance, which is small between the as-received steels become greater after heat treatment, following the order: carbon steel < chromium steel ~ high speed steel. To explain these differences, the nano- and microstructure of the steels has been characterized by the ex situ techniques of atomic force microscopy and optical microscopy, before and after surface etching with Nital (a solution of 5% HNO3 in ethanol). This causes preferential attack of the ferrite phases showing the carbide phases more clearly. From these nanostructural studies it was possible to better understand why the passive films formed on chromium steel and high speed steel have superior protective properties to those formed on carbon steel.
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spelling The nanostructure and microstructure of steels: Electrochemical Tafel behaviour and atomic force microscopyCarbon steelChromium steelHigh speed steelCarbidesTafel plotsAtomic force microscopyThe influence of chemical composition and heat treatment on a low-carbon steel, chromium steel and high speed steel has been examined by polarisation curves and electrochemical parameters deduced from the Tafel plots. The electrochemical corrosion resistance, which is small between the as-received steels become greater after heat treatment, following the order: carbon steel < chromium steel ~ high speed steel. To explain these differences, the nano- and microstructure of the steels has been characterized by the ex situ techniques of atomic force microscopy and optical microscopy, before and after surface etching with Nital (a solution of 5% HNO3 in ethanol). This causes preferential attack of the ferrite phases showing the carbide phases more clearly. From these nanostructural studies it was possible to better understand why the passive films formed on chromium steel and high speed steel have superior protective properties to those formed on carbon steel.http://www.sciencedirect.com/science/article/B6TWS-4H2PJS6-2/1/0a3dfd1f1c9c9f35426cf6e9fb8102662005info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleaplication/PDFhttp://hdl.handle.net/10316/5098http://hdl.handle.net/10316/5098https://doi.org/10.1016/j.corsci.2005.05.038engCorrosion Science. 47:12 (2005) 2871-2882Alves, Valéria A.Paquim, Ana M. ChiorceaCavaleiro, AlbanoBrett, Christopher M. A.info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2021-07-27T09:49:22Zoai:estudogeral.uc.pt:10316/5098Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T21:01:24.379832Repositório 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 The nanostructure and microstructure of steels: Electrochemical Tafel behaviour and atomic force microscopy
title The nanostructure and microstructure of steels: Electrochemical Tafel behaviour and atomic force microscopy
spellingShingle The nanostructure and microstructure of steels: Electrochemical Tafel behaviour and atomic force microscopy
Alves, Valéria A.
Carbon steel
Chromium steel
High speed steel
Carbides
Tafel plots
Atomic force microscopy
title_short The nanostructure and microstructure of steels: Electrochemical Tafel behaviour and atomic force microscopy
title_full The nanostructure and microstructure of steels: Electrochemical Tafel behaviour and atomic force microscopy
title_fullStr The nanostructure and microstructure of steels: Electrochemical Tafel behaviour and atomic force microscopy
title_full_unstemmed The nanostructure and microstructure of steels: Electrochemical Tafel behaviour and atomic force microscopy
title_sort The nanostructure and microstructure of steels: Electrochemical Tafel behaviour and atomic force microscopy
author Alves, Valéria A.
author_facet Alves, Valéria A.
Paquim, Ana M. Chiorcea
Cavaleiro, Albano
Brett, Christopher M. A.
author_role author
author2 Paquim, Ana M. Chiorcea
Cavaleiro, Albano
Brett, Christopher M. A.
author2_role author
author
author
dc.contributor.author.fl_str_mv Alves, Valéria A.
Paquim, Ana M. Chiorcea
Cavaleiro, Albano
Brett, Christopher M. A.
dc.subject.por.fl_str_mv Carbon steel
Chromium steel
High speed steel
Carbides
Tafel plots
Atomic force microscopy
topic Carbon steel
Chromium steel
High speed steel
Carbides
Tafel plots
Atomic force microscopy
description The influence of chemical composition and heat treatment on a low-carbon steel, chromium steel and high speed steel has been examined by polarisation curves and electrochemical parameters deduced from the Tafel plots. The electrochemical corrosion resistance, which is small between the as-received steels become greater after heat treatment, following the order: carbon steel < chromium steel ~ high speed steel. To explain these differences, the nano- and microstructure of the steels has been characterized by the ex situ techniques of atomic force microscopy and optical microscopy, before and after surface etching with Nital (a solution of 5% HNO3 in ethanol). This causes preferential attack of the ferrite phases showing the carbide phases more clearly. From these nanostructural studies it was possible to better understand why the passive films formed on chromium steel and high speed steel have superior protective properties to those formed on carbon steel.
publishDate 2005
dc.date.none.fl_str_mv 2005
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://hdl.handle.net/10316/5098
http://hdl.handle.net/10316/5098
https://doi.org/10.1016/j.corsci.2005.05.038
url http://hdl.handle.net/10316/5098
https://doi.org/10.1016/j.corsci.2005.05.038
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Corrosion Science. 47:12 (2005) 2871-2882
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv aplication/PDF
dc.source.none.fl_str_mv 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
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