The nanostructure and microstructure of steels: Electrochemical Tafel behaviour and atomic force microscopy
Autor(a) principal: | |
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Data de Publicação: | 2005 |
Outros Autores: | , , |
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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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) |
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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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1799133905743249408 |