Influence of thermal treatments in the corrosion behaviour of HVOF Cr 3C2-NiCr coatings
Autor(a) principal: | |
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Data de Publicação: | 2001 |
Outros Autores: | , , |
Tipo de documento: | Artigo de conferência |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://hdl.handle.net/11449/66744 |
Resumo: | Thermal spray coatings as Cr3C2-NiCr obtained by high velocity oxy-fuel spraying (HVOF) are mainly applied due to their behaviour against aggressive erosive-abrasive and corrosive atmospheres and their thermal stability at high temperatures [1]. In order to increase the corrosion protection that it offers to the substrate trying to close the interconnected pores, it is possible to apply a thermal treatment with the gun during the spraying of the coating. This treatment could be applied in different ways. One of these ways consists of spraying only a few layers of coating followed by thermal treatment and finally the spray of the rest of layers. This thermal treatment on spraying is studied related to the corrosion properties of the system. The study comprises the electrochemical characterisation of the system by open circuit potential (OC), polarisation resistance (Rp), cyclic voltammetry (CV) and impedance spectroscopy measurements (EIS). Optical and scanning electron microscopy characterisation (OM and SEM) of the top and cross-section of the system has been used in order to justify the electrochemical results. |
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Influence of thermal treatments in the corrosion behaviour of HVOF Cr 3C2-NiCr coatingsChromium compoundsCorrosionCyclic voltammetryElectrochemistryElectrolytesEnergy dispersive spectroscopyHeat treatmentOptical microscopyPorosityScanning electron microscopyThermodynamic stabilityHigh velocity oxy-fuel (HVOF) sprayingImpedance spectroscopySprayed coatingsThermal spray coatings as Cr3C2-NiCr obtained by high velocity oxy-fuel spraying (HVOF) are mainly applied due to their behaviour against aggressive erosive-abrasive and corrosive atmospheres and their thermal stability at high temperatures [1]. In order to increase the corrosion protection that it offers to the substrate trying to close the interconnected pores, it is possible to apply a thermal treatment with the gun during the spraying of the coating. This treatment could be applied in different ways. One of these ways consists of spraying only a few layers of coating followed by thermal treatment and finally the spray of the rest of layers. This thermal treatment on spraying is studied related to the corrosion properties of the system. The study comprises the electrochemical characterisation of the system by open circuit potential (OC), polarisation resistance (Rp), cyclic voltammetry (CV) and impedance spectroscopy measurements (EIS). Optical and scanning electron microscopy characterisation (OM and SEM) of the top and cross-section of the system has been used in order to justify the electrochemical results.Dept. Enginyeria Química CPT Thermal Spray Center Universitat de Barcelona, BarcelonaInstituto de Química Universidade Estadual Paulista Depto Físico, Araraquara, SPInstituto de Química Universidade Estadual Paulista Depto Físico, Araraquara, SPUniversitat de BarcelonaUniversidade Estadual Paulista (Unesp)Guilemany, J. M.Fernández, J.Delgado, J.Benedetti, Assis Vicente [UNESP]2014-05-27T11:20:22Z2014-05-27T11:20:22Z2001-12-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObject1165-1169Proceedings of the International Thermal Spray Conference, p. 1165-1169.http://hdl.handle.net/11449/667442-s2.0-1442279863Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengProceedings of the International Thermal Spray Conferenceinfo:eu-repo/semantics/openAccess2021-10-23T21:41:26Zoai:repositorio.unesp.br:11449/66744Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462021-10-23T21:41:26Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Influence of thermal treatments in the corrosion behaviour of HVOF Cr 3C2-NiCr coatings |
title |
Influence of thermal treatments in the corrosion behaviour of HVOF Cr 3C2-NiCr coatings |
spellingShingle |
Influence of thermal treatments in the corrosion behaviour of HVOF Cr 3C2-NiCr coatings Guilemany, J. M. Chromium compounds Corrosion Cyclic voltammetry Electrochemistry Electrolytes Energy dispersive spectroscopy Heat treatment Optical microscopy Porosity Scanning electron microscopy Thermodynamic stability High velocity oxy-fuel (HVOF) spraying Impedance spectroscopy Sprayed coatings |
title_short |
Influence of thermal treatments in the corrosion behaviour of HVOF Cr 3C2-NiCr coatings |
title_full |
Influence of thermal treatments in the corrosion behaviour of HVOF Cr 3C2-NiCr coatings |
title_fullStr |
Influence of thermal treatments in the corrosion behaviour of HVOF Cr 3C2-NiCr coatings |
title_full_unstemmed |
Influence of thermal treatments in the corrosion behaviour of HVOF Cr 3C2-NiCr coatings |
title_sort |
Influence of thermal treatments in the corrosion behaviour of HVOF Cr 3C2-NiCr coatings |
author |
Guilemany, J. M. |
author_facet |
Guilemany, J. M. Fernández, J. Delgado, J. Benedetti, Assis Vicente [UNESP] |
author_role |
author |
author2 |
Fernández, J. Delgado, J. Benedetti, Assis Vicente [UNESP] |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
Universitat de Barcelona Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Guilemany, J. M. Fernández, J. Delgado, J. Benedetti, Assis Vicente [UNESP] |
dc.subject.por.fl_str_mv |
Chromium compounds Corrosion Cyclic voltammetry Electrochemistry Electrolytes Energy dispersive spectroscopy Heat treatment Optical microscopy Porosity Scanning electron microscopy Thermodynamic stability High velocity oxy-fuel (HVOF) spraying Impedance spectroscopy Sprayed coatings |
topic |
Chromium compounds Corrosion Cyclic voltammetry Electrochemistry Electrolytes Energy dispersive spectroscopy Heat treatment Optical microscopy Porosity Scanning electron microscopy Thermodynamic stability High velocity oxy-fuel (HVOF) spraying Impedance spectroscopy Sprayed coatings |
description |
Thermal spray coatings as Cr3C2-NiCr obtained by high velocity oxy-fuel spraying (HVOF) are mainly applied due to their behaviour against aggressive erosive-abrasive and corrosive atmospheres and their thermal stability at high temperatures [1]. In order to increase the corrosion protection that it offers to the substrate trying to close the interconnected pores, it is possible to apply a thermal treatment with the gun during the spraying of the coating. This treatment could be applied in different ways. One of these ways consists of spraying only a few layers of coating followed by thermal treatment and finally the spray of the rest of layers. This thermal treatment on spraying is studied related to the corrosion properties of the system. The study comprises the electrochemical characterisation of the system by open circuit potential (OC), polarisation resistance (Rp), cyclic voltammetry (CV) and impedance spectroscopy measurements (EIS). Optical and scanning electron microscopy characterisation (OM and SEM) of the top and cross-section of the system has been used in order to justify the electrochemical results. |
publishDate |
2001 |
dc.date.none.fl_str_mv |
2001-12-01 2014-05-27T11:20:22Z 2014-05-27T11:20:22Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/conferenceObject |
format |
conferenceObject |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
Proceedings of the International Thermal Spray Conference, p. 1165-1169. http://hdl.handle.net/11449/66744 2-s2.0-1442279863 |
identifier_str_mv |
Proceedings of the International Thermal Spray Conference, p. 1165-1169. 2-s2.0-1442279863 |
url |
http://hdl.handle.net/11449/66744 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Proceedings of the International Thermal Spray Conference |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
1165-1169 |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1799965122768142336 |