Development of hard intermetallic coatings on austenitic stainless steel by hot dipping in an Al-Si alloy

The austenitic stainless steel was coated by dipping it into a molten Al–12.4%Si alloy at 765 °C. The effect of immersion times in the range of 60 to 900 s was investigated with respect to the crystalline structure, thickness, and microhardness of the coating. A uniform layer (~12 μm) of intermetall...

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Detalles Bibliográficos
Autores: Frutos, E., González-Carrasco, José Luis, Capdevila, Carlos, Jiménez, José Antonio
Tipo de recurso: artículo
Fecha de publicación:2009
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/35819
Acceso en línea:http://hdl.handle.net/10261/35819
Access Level:acceso abierto
Palabra clave:Austenitic stainless steels
Coatings
Intermetallic compounds
Microhardness
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spelling Development of hard intermetallic coatings on austenitic stainless steel by hot dipping in an Al-Si alloyFrutos, E.González-Carrasco, José LuisCapdevila, CarlosJiménez, José AntonioAustenitic stainless steelsCoatingsIntermetallic compoundsMicrohardnessThe austenitic stainless steel was coated by dipping it into a molten Al–12.4%Si alloy at 765 °C. The effect of immersion times in the range of 60 to 900 s was investigated with respect to the crystalline structure, thickness, and microhardness of the coating. A uniform layer (~12 μm) of intermetallic Al12(Fe,Cr)3Si2 with hexagonal crystalline structure is formed, irrespective of the immersion time. Incorporation of Si to the coating changes the growth mode of the coating from inwards to outwards, which favours the development of a flat substrate/coating interface. Microhardness of the coating decreases with increasing dipping time, ranging between 850 and 600 HV for the shortest and longest immersion time, respectively. These hardness values are higher than that for the substrate of about 200 HV, irrespective of the immersion time.The authors wish to express their thanks for the financial support of the Spanish Project MAT2006-12948-C04-01 and the CIBER of Bioingeniería, Biomateriales y Nanomedicina, supported by the ISCIII.Peer reviewedElsevier201120112009info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501http://hdl.handle.net/10261/35819reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://dx.doi.org/10.1016/j.surfcoat.2009.03.015info:eu-repo/semantics/openAccessoai:digital.csic.es:10261/358192026-05-22T06:33:51Z
dc.title.none.fl_str_mv Development of hard intermetallic coatings on austenitic stainless steel by hot dipping in an Al-Si alloy
title Development of hard intermetallic coatings on austenitic stainless steel by hot dipping in an Al-Si alloy
spellingShingle Development of hard intermetallic coatings on austenitic stainless steel by hot dipping in an Al-Si alloy
Frutos, E.
Austenitic stainless steels
Coatings
Intermetallic compounds
Microhardness
title_short Development of hard intermetallic coatings on austenitic stainless steel by hot dipping in an Al-Si alloy
title_full Development of hard intermetallic coatings on austenitic stainless steel by hot dipping in an Al-Si alloy
title_fullStr Development of hard intermetallic coatings on austenitic stainless steel by hot dipping in an Al-Si alloy
title_full_unstemmed Development of hard intermetallic coatings on austenitic stainless steel by hot dipping in an Al-Si alloy
title_sort Development of hard intermetallic coatings on austenitic stainless steel by hot dipping in an Al-Si alloy
dc.creator.none.fl_str_mv Frutos, E.
González-Carrasco, José Luis
Capdevila, Carlos
Jiménez, José Antonio
author Frutos, E.
author_facet Frutos, E.
González-Carrasco, José Luis
Capdevila, Carlos
Jiménez, José Antonio
author_role author
author2 González-Carrasco, José Luis
Capdevila, Carlos
Jiménez, José Antonio
author2_role author
author
author
dc.subject.none.fl_str_mv Austenitic stainless steels
Coatings
Intermetallic compounds
Microhardness
topic Austenitic stainless steels
Coatings
Intermetallic compounds
Microhardness
description The austenitic stainless steel was coated by dipping it into a molten Al–12.4%Si alloy at 765 °C. The effect of immersion times in the range of 60 to 900 s was investigated with respect to the crystalline structure, thickness, and microhardness of the coating. A uniform layer (~12 μm) of intermetallic Al12(Fe,Cr)3Si2 with hexagonal crystalline structure is formed, irrespective of the immersion time. Incorporation of Si to the coating changes the growth mode of the coating from inwards to outwards, which favours the development of a flat substrate/coating interface. Microhardness of the coating decreases with increasing dipping time, ranging between 850 and 600 HV for the shortest and longest immersion time, respectively. These hardness values are higher than that for the substrate of about 200 HV, irrespective of the immersion time.
publishDate 2009
dc.date.none.fl_str_mv 2009
2011
2011
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/10261/35819
url http://hdl.handle.net/10261/35819
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://dx.doi.org/10.1016/j.surfcoat.2009.03.015
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
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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