High Temperature Oxidation Behavior of Yttrium Dioxide Coated Fe-20Cr Alloy

Detalhes bibliográficos
Autor(a) principal: Pillis,Marina Fuser
Data de Publicação: 2016
Outros Autores: Correa,Olandir Vercino, Ramanathan,Lalgudi Venkataraman
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=S1516-14392016000300611
Resumo: Long term isothermal and cyclic oxidation behavior of yttrium dioxide (Y2O3) coated Fe-20Cr alloy was studied. Oxidation tests were carried out in air for periods of up to 200 hours at 1000°C and the oxidation behavior of the alloy was evaluated gravimetrically. The Y2O3 coating reduced markedly the mass gain of the alloy. Energy dispersive spectroscopic analysis of scale sections on oxidized Y2O3 coated specimens revealed a Cr rich layer close to the metal/oxide interface and the presence of Y and Cr near the oxide/air interface, indicating diffusion of Cr through the Y2O3 layer. Further evidence of this diffusion was seen as change in colour of the Y2O3 coating from white to green after prolonged oxidation. X-ray diffraction analysis of the scale revealed perovskite-type YCrO3.This study attributes the increased oxidation resistance of the Y2O3 coated Fe-20Cr alloy to increased oxygen ion diffusion through the Cr2O3 scale due to YCrO3 formation and grain boundary segregated Y ion blocking alloy cation diffusion.
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spelling High Temperature Oxidation Behavior of Yttrium Dioxide Coated Fe-20Cr AlloyIron-chromium alloyYttrium dioxideCoatingOxidation behaviorHigh temperatureLong term isothermal and cyclic oxidation behavior of yttrium dioxide (Y2O3) coated Fe-20Cr alloy was studied. Oxidation tests were carried out in air for periods of up to 200 hours at 1000°C and the oxidation behavior of the alloy was evaluated gravimetrically. The Y2O3 coating reduced markedly the mass gain of the alloy. Energy dispersive spectroscopic analysis of scale sections on oxidized Y2O3 coated specimens revealed a Cr rich layer close to the metal/oxide interface and the presence of Y and Cr near the oxide/air interface, indicating diffusion of Cr through the Y2O3 layer. Further evidence of this diffusion was seen as change in colour of the Y2O3 coating from white to green after prolonged oxidation. X-ray diffraction analysis of the scale revealed perovskite-type YCrO3.This study attributes the increased oxidation resistance of the Y2O3 coated Fe-20Cr alloy to increased oxygen ion diffusion through the Cr2O3 scale due to YCrO3 formation and grain boundary segregated Y ion blocking alloy cation diffusion.ABM, ABC, ABPol2016-06-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392016000300611Materials Research v.19 n.3 2016reponame:Materials research (São Carlos. Online)instname:Universidade Federal de São Carlos (UFSCAR)instacron:ABM ABC ABPOL10.1590/1980-5373-MR-2015-0393info:eu-repo/semantics/openAccessPillis,Marina FuserCorrea,Olandir VercinoRamanathan,Lalgudi Venkataramaneng2016-05-19T00:00:00Zoai:scielo:S1516-14392016000300611Revistahttp://www.scielo.br/mrPUBhttps://old.scielo.br/oai/scielo-oai.phpdedz@power.ufscar.br1980-53731516-1439opendoar:2016-05-19T00:00Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR)false
dc.title.none.fl_str_mv High Temperature Oxidation Behavior of Yttrium Dioxide Coated Fe-20Cr Alloy
title High Temperature Oxidation Behavior of Yttrium Dioxide Coated Fe-20Cr Alloy
spellingShingle High Temperature Oxidation Behavior of Yttrium Dioxide Coated Fe-20Cr Alloy
Pillis,Marina Fuser
Iron-chromium alloy
Yttrium dioxide
Coating
Oxidation behavior
High temperature
title_short High Temperature Oxidation Behavior of Yttrium Dioxide Coated Fe-20Cr Alloy
title_full High Temperature Oxidation Behavior of Yttrium Dioxide Coated Fe-20Cr Alloy
title_fullStr High Temperature Oxidation Behavior of Yttrium Dioxide Coated Fe-20Cr Alloy
title_full_unstemmed High Temperature Oxidation Behavior of Yttrium Dioxide Coated Fe-20Cr Alloy
title_sort High Temperature Oxidation Behavior of Yttrium Dioxide Coated Fe-20Cr Alloy
author Pillis,Marina Fuser
author_facet Pillis,Marina Fuser
Correa,Olandir Vercino
Ramanathan,Lalgudi Venkataraman
author_role author
author2 Correa,Olandir Vercino
Ramanathan,Lalgudi Venkataraman
author2_role author
author
dc.contributor.author.fl_str_mv Pillis,Marina Fuser
Correa,Olandir Vercino
Ramanathan,Lalgudi Venkataraman
dc.subject.por.fl_str_mv Iron-chromium alloy
Yttrium dioxide
Coating
Oxidation behavior
High temperature
topic Iron-chromium alloy
Yttrium dioxide
Coating
Oxidation behavior
High temperature
description Long term isothermal and cyclic oxidation behavior of yttrium dioxide (Y2O3) coated Fe-20Cr alloy was studied. Oxidation tests were carried out in air for periods of up to 200 hours at 1000°C and the oxidation behavior of the alloy was evaluated gravimetrically. The Y2O3 coating reduced markedly the mass gain of the alloy. Energy dispersive spectroscopic analysis of scale sections on oxidized Y2O3 coated specimens revealed a Cr rich layer close to the metal/oxide interface and the presence of Y and Cr near the oxide/air interface, indicating diffusion of Cr through the Y2O3 layer. Further evidence of this diffusion was seen as change in colour of the Y2O3 coating from white to green after prolonged oxidation. X-ray diffraction analysis of the scale revealed perovskite-type YCrO3.This study attributes the increased oxidation resistance of the Y2O3 coated Fe-20Cr alloy to increased oxygen ion diffusion through the Cr2O3 scale due to YCrO3 formation and grain boundary segregated Y ion blocking alloy cation diffusion.
publishDate 2016
dc.date.none.fl_str_mv 2016-06-01
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=S1516-14392016000300611
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392016000300611
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/1980-5373-MR-2015-0393
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.19 n.3 2016
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
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