Niobium and niobium-iron coatings on API 5LX 70 steel applied with HVOF

Detalhes bibliográficos
Autor(a) principal: Brandolt,Cristiane de Souza
Data de Publicação: 2014
Outros Autores: Souza Junior,Jair Garcia de, Kunst,Sandra Raquel, Vega,Maria Rita Ortega, Schroeder,Roberto Moreira, Malfatti,Célia de Fraga
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Materials research (São Carlos. Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392014000400010
Resumo: The present study aimed to create and characterize niobium and niobium-iron 60% coatings applied to steel API 5L X70 using the hypersonic thermal spray process (HVOF). The morphologies of the coatings were analyzed using scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), X-ray diffraction (XRD) and profilometry, while the coatings' hardnesses was evaluated using the Vickers hardness test. The coatings' corrosion resistance was evaluated by monitoring their open circuit potential and potentiodynamic polarization and performing electrochemical impedance spectroscopy in a 0. 05 M NaCl solution. The results showed that the niobium-iron coating contained minor porosity regions, while such defects occurred over large regions of the niobium coating. In terms of corrosion resistance, the coatings obtained in this work promoted a reduction in the substrate's corrosion rate, but the presence of discontinuities such as porosity compromised the barrier effects of these coatings.
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spelling Niobium and niobium-iron coatings on API 5LX 70 steel applied with HVOFcoatingsniobiumHVOFAPI 5L X70 steelThe present study aimed to create and characterize niobium and niobium-iron 60% coatings applied to steel API 5L X70 using the hypersonic thermal spray process (HVOF). The morphologies of the coatings were analyzed using scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), X-ray diffraction (XRD) and profilometry, while the coatings' hardnesses was evaluated using the Vickers hardness test. The coatings' corrosion resistance was evaluated by monitoring their open circuit potential and potentiodynamic polarization and performing electrochemical impedance spectroscopy in a 0. 05 M NaCl solution. The results showed that the niobium-iron coating contained minor porosity regions, while such defects occurred over large regions of the niobium coating. In terms of corrosion resistance, the coatings obtained in this work promoted a reduction in the substrate's corrosion rate, but the presence of discontinuities such as porosity compromised the barrier effects of these coatings.ABM, ABC, ABPol2014-08-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392014000400010Materials Research v.17 n.4 2014reponame:Materials research (São Carlos. Online)instname:Universidade Federal de São Carlos (UFSCAR)instacron:ABM ABC ABPOL10.1590/S1516-14392014005000087info:eu-repo/semantics/openAccessBrandolt,Cristiane de SouzaSouza Junior,Jair Garcia deKunst,Sandra RaquelVega,Maria Rita OrtegaSchroeder,Roberto MoreiraMalfatti,Célia de Fragaeng2014-09-16T00:00:00Zoai:scielo:S1516-14392014000400010Revistahttp://www.scielo.br/mrPUBhttps://old.scielo.br/oai/scielo-oai.phpdedz@power.ufscar.br1980-53731516-1439opendoar:2014-09-16T00:00Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR)false
dc.title.none.fl_str_mv Niobium and niobium-iron coatings on API 5LX 70 steel applied with HVOF
title Niobium and niobium-iron coatings on API 5LX 70 steel applied with HVOF
spellingShingle Niobium and niobium-iron coatings on API 5LX 70 steel applied with HVOF
Brandolt,Cristiane de Souza
coatings
niobium
HVOF
API 5L X70 steel
title_short Niobium and niobium-iron coatings on API 5LX 70 steel applied with HVOF
title_full Niobium and niobium-iron coatings on API 5LX 70 steel applied with HVOF
title_fullStr Niobium and niobium-iron coatings on API 5LX 70 steel applied with HVOF
title_full_unstemmed Niobium and niobium-iron coatings on API 5LX 70 steel applied with HVOF
title_sort Niobium and niobium-iron coatings on API 5LX 70 steel applied with HVOF
author Brandolt,Cristiane de Souza
author_facet Brandolt,Cristiane de Souza
Souza Junior,Jair Garcia de
Kunst,Sandra Raquel
Vega,Maria Rita Ortega
Schroeder,Roberto Moreira
Malfatti,Célia de Fraga
author_role author
author2 Souza Junior,Jair Garcia de
Kunst,Sandra Raquel
Vega,Maria Rita Ortega
Schroeder,Roberto Moreira
Malfatti,Célia de Fraga
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv Brandolt,Cristiane de Souza
Souza Junior,Jair Garcia de
Kunst,Sandra Raquel
Vega,Maria Rita Ortega
Schroeder,Roberto Moreira
Malfatti,Célia de Fraga
dc.subject.por.fl_str_mv coatings
niobium
HVOF
API 5L X70 steel
topic coatings
niobium
HVOF
API 5L X70 steel
description The present study aimed to create and characterize niobium and niobium-iron 60% coatings applied to steel API 5L X70 using the hypersonic thermal spray process (HVOF). The morphologies of the coatings were analyzed using scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), X-ray diffraction (XRD) and profilometry, while the coatings' hardnesses was evaluated using the Vickers hardness test. The coatings' corrosion resistance was evaluated by monitoring their open circuit potential and potentiodynamic polarization and performing electrochemical impedance spectroscopy in a 0. 05 M NaCl solution. The results showed that the niobium-iron coating contained minor porosity regions, while such defects occurred over large regions of the niobium coating. In terms of corrosion resistance, the coatings obtained in this work promoted a reduction in the substrate's corrosion rate, but the presence of discontinuities such as porosity compromised the barrier effects of these coatings.
publishDate 2014
dc.date.none.fl_str_mv 2014-08-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392014000400010
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392014000400010
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S1516-14392014005000087
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv ABM, ABC, ABPol
publisher.none.fl_str_mv ABM, ABC, ABPol
dc.source.none.fl_str_mv Materials Research v.17 n.4 2014
reponame:Materials research (São Carlos. Online)
instname:Universidade Federal de São Carlos (UFSCAR)
instacron:ABM ABC ABPOL
instname_str Universidade Federal de São Carlos (UFSCAR)
instacron_str ABM ABC ABPOL
institution ABM ABC ABPOL
reponame_str Materials research (São Carlos. Online)
collection Materials research (São Carlos. Online)
repository.name.fl_str_mv Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR)
repository.mail.fl_str_mv dedz@power.ufscar.br
_version_ 1754212665017761792

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