Fe-Cr-Si Codeposition on Nb-Si based Alloys via Halide Activated Pack Cementation to Improve Oxidation Resistance

Detalhes bibliográficos
Autor(a) principal: Cruz,Anderson Weslei da
Data de Publicação: 2020
Outros Autores: Glória,Raphael Felca, Nogueira,Rafaela de Oliveira, Chaia,Nabil, Silva,Gilbert, Rodrigues,Geovani
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=S1516-14392020000500222
Resumo: Abstract The coating formation by Fe-Cr-Si codeposition was done in a single step via Halide Activated Pack Cementation (HAPC) on Nb-Si alloy with the aim of improving the oxidation resistance. The activator salt and temperature selections for HAPC process were obtained by thermodynamic analysis. The isothermal oxidation test results for the coated alloy at 1200 °C for 62 h showed good oxidation resistance. The mass gain was 17.5 mg/cm2. Furthermore, no cracks and spallation on the oxide layers were observed for the coated alloy after the oxidation test, being that the oxidative kinetics curve is in accordance with the parabolic rate law. On the other hand, total oxidation was observed for the uncoated alloy after 12 h at 1200 °C in the isothermal oxidation test. The mass gain was 49.27 mg/cm2 and several cracks and spallation on the oxide layers led to a severe oxidation process.
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spelling Fe-Cr-Si Codeposition on Nb-Si based Alloys via Halide Activated Pack Cementation to Improve Oxidation ResistanceNb-Si based alloysHalide Activated Pack Cementation (HAPC process)Fe-Cr-Si CodepositionThermodynamic AnalysisOxidation ResistanceAbstract The coating formation by Fe-Cr-Si codeposition was done in a single step via Halide Activated Pack Cementation (HAPC) on Nb-Si alloy with the aim of improving the oxidation resistance. The activator salt and temperature selections for HAPC process were obtained by thermodynamic analysis. The isothermal oxidation test results for the coated alloy at 1200 °C for 62 h showed good oxidation resistance. The mass gain was 17.5 mg/cm2. Furthermore, no cracks and spallation on the oxide layers were observed for the coated alloy after the oxidation test, being that the oxidative kinetics curve is in accordance with the parabolic rate law. On the other hand, total oxidation was observed for the uncoated alloy after 12 h at 1200 °C in the isothermal oxidation test. The mass gain was 49.27 mg/cm2 and several cracks and spallation on the oxide layers led to a severe oxidation process.ABM, ABC, ABPol2020-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392020000500222Materials Research v.23 n.5 2020reponame:Materials research (São Carlos. Online)instname:Universidade Federal de São Carlos (UFSCAR)instacron:ABM ABC ABPOL10.1590/1980-5373-mr-2020-0105info:eu-repo/semantics/openAccessCruz,Anderson Weslei daGlória,Raphael FelcaNogueira,Rafaela de OliveiraChaia,NabilSilva,GilbertRodrigues,Geovanieng2020-11-30T00:00:00Zoai:scielo:S1516-14392020000500222Revistahttp://www.scielo.br/mrPUBhttps://old.scielo.br/oai/scielo-oai.phpdedz@power.ufscar.br1980-53731516-1439opendoar:2020-11-30T00:00Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR)false
dc.title.none.fl_str_mv Fe-Cr-Si Codeposition on Nb-Si based Alloys via Halide Activated Pack Cementation to Improve Oxidation Resistance
title Fe-Cr-Si Codeposition on Nb-Si based Alloys via Halide Activated Pack Cementation to Improve Oxidation Resistance
spellingShingle Fe-Cr-Si Codeposition on Nb-Si based Alloys via Halide Activated Pack Cementation to Improve Oxidation Resistance
Cruz,Anderson Weslei da
Nb-Si based alloys
Halide Activated Pack Cementation (HAPC process)
Fe-Cr-Si Codeposition
Thermodynamic Analysis
Oxidation Resistance
title_short Fe-Cr-Si Codeposition on Nb-Si based Alloys via Halide Activated Pack Cementation to Improve Oxidation Resistance
title_full Fe-Cr-Si Codeposition on Nb-Si based Alloys via Halide Activated Pack Cementation to Improve Oxidation Resistance
title_fullStr Fe-Cr-Si Codeposition on Nb-Si based Alloys via Halide Activated Pack Cementation to Improve Oxidation Resistance
title_full_unstemmed Fe-Cr-Si Codeposition on Nb-Si based Alloys via Halide Activated Pack Cementation to Improve Oxidation Resistance
title_sort Fe-Cr-Si Codeposition on Nb-Si based Alloys via Halide Activated Pack Cementation to Improve Oxidation Resistance
author Cruz,Anderson Weslei da
author_facet Cruz,Anderson Weslei da
Glória,Raphael Felca
Nogueira,Rafaela de Oliveira
Chaia,Nabil
Silva,Gilbert
Rodrigues,Geovani
author_role author
author2 Glória,Raphael Felca
Nogueira,Rafaela de Oliveira
Chaia,Nabil
Silva,Gilbert
Rodrigues,Geovani
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv Cruz,Anderson Weslei da
Glória,Raphael Felca
Nogueira,Rafaela de Oliveira
Chaia,Nabil
Silva,Gilbert
Rodrigues,Geovani
dc.subject.por.fl_str_mv Nb-Si based alloys
Halide Activated Pack Cementation (HAPC process)
Fe-Cr-Si Codeposition
Thermodynamic Analysis
Oxidation Resistance
topic Nb-Si based alloys
Halide Activated Pack Cementation (HAPC process)
Fe-Cr-Si Codeposition
Thermodynamic Analysis
Oxidation Resistance
description Abstract The coating formation by Fe-Cr-Si codeposition was done in a single step via Halide Activated Pack Cementation (HAPC) on Nb-Si alloy with the aim of improving the oxidation resistance. The activator salt and temperature selections for HAPC process were obtained by thermodynamic analysis. The isothermal oxidation test results for the coated alloy at 1200 °C for 62 h showed good oxidation resistance. The mass gain was 17.5 mg/cm2. Furthermore, no cracks and spallation on the oxide layers were observed for the coated alloy after the oxidation test, being that the oxidative kinetics curve is in accordance with the parabolic rate law. On the other hand, total oxidation was observed for the uncoated alloy after 12 h at 1200 °C in the isothermal oxidation test. The mass gain was 49.27 mg/cm2 and several cracks and spallation on the oxide layers led to a severe oxidation process.
publishDate 2020
dc.date.none.fl_str_mv 2020-01-01
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=S1516-14392020000500222
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392020000500222
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/1980-5373-mr-2020-0105
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.23 n.5 2020
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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