Effect of high-temperature exposure on degradation of La0.6Sr0.4CoO3 coated metallic interconnects for ITSOFC and SOEC

Detalhes bibliográficos
Autor(a) principal: Korb, Matias de Angelis
Data de Publicação: 2020
Outros Autores: Tarragó, Diego Pereira, Krischer, Cesar Augusto, Duluard, Sandrine, Ansart, Florence, Malfatti, Célia de Fraga
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFRGS
Texto Completo: http://hdl.handle.net/10183/223376
Resumo: Previous studies showed the formation of new phases affecting the electrical properties of LSC thin films deposited on stainless steel substrates, which are commonly tested for ITSOFC and SOEC interconnects. A 4.3 μm thick La0.6Sr0.4CoO3 coating was deposited on AISI430 steel by spray pyrolysis, followed by heat treatment (800°C/2h) and an oxidation in air (800°C/96h). The La0.6Sr0.4CoO3 phase interacted with the metallic substrate and formed SrCrO4 , causing degradation of the perovskite into La0.9Sr0.1CoO3 . An EDS mapping showed Sr and Cr enrichment in the coating/substrate interface. TG analysis indicated a lower mass gain for the coated substrate. The total ASR at 800°C of the interconnect before and after oxidation was 3.23 Ω.cm2 and 3.98 Ω.cm2 , respectively. The Ea underwent very small variation, remaining around 0.24 eV (T≤300°C) and 0.65 eV (T≥400°C). The reaction of Cr from the substrate and Sr from LSC seems to have impaired the performance of the interconnect.
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spelling Korb, Matias de AngelisTarragó, Diego PereiraKrischer, Cesar AugustoDuluard, SandrineAnsart, FlorenceMalfatti, Célia de Fraga2021-07-07T04:36:24Z20201516-1439http://hdl.handle.net/10183/223376001127893Previous studies showed the formation of new phases affecting the electrical properties of LSC thin films deposited on stainless steel substrates, which are commonly tested for ITSOFC and SOEC interconnects. A 4.3 μm thick La0.6Sr0.4CoO3 coating was deposited on AISI430 steel by spray pyrolysis, followed by heat treatment (800°C/2h) and an oxidation in air (800°C/96h). The La0.6Sr0.4CoO3 phase interacted with the metallic substrate and formed SrCrO4 , causing degradation of the perovskite into La0.9Sr0.1CoO3 . An EDS mapping showed Sr and Cr enrichment in the coating/substrate interface. TG analysis indicated a lower mass gain for the coated substrate. The total ASR at 800°C of the interconnect before and after oxidation was 3.23 Ω.cm2 and 3.98 Ω.cm2 , respectively. The Ea underwent very small variation, remaining around 0.24 eV (T≤300°C) and 0.65 eV (T≥400°C). The reaction of Cr from the substrate and Sr from LSC seems to have impaired the performance of the interconnect.application/pdfengMaterials research : ibero-american journal of materials. São Carlos, SP. Vol. 23, n. 3 (2020), e20200084, p. 1-7Aço inoxidávelDegradaçãoTratamento térmicoSteel intreconnectCoatingLanthanum cobaltiteImpedance spectroscopyEffect of high-temperature exposure on degradation of La0.6Sr0.4CoO3 coated metallic interconnects for ITSOFC and SOECinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/otherinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSTEXT001127893.pdf.txt001127893.pdf.txtExtracted Texttext/plain35686http://www.lume.ufrgs.br/bitstream/10183/223376/2/001127893.pdf.txtb7d65ebb1062ba0e28381a2b98187925MD52ORIGINAL001127893.pdfTexto completo (inglês)application/pdf1429954http://www.lume.ufrgs.br/bitstream/10183/223376/1/001127893.pdf850d95848e6f38d04ddcafbce86588b1MD5110183/2233762021-08-04 04:45:19.352605oai:www.lume.ufrgs.br:10183/223376Repositório InstitucionalPUBhttps://lume.ufrgs.br/oai/requestlume@ufrgs.bropendoar:2021-08-04T07:45:19Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false
dc.title.pt_BR.fl_str_mv Effect of high-temperature exposure on degradation of La0.6Sr0.4CoO3 coated metallic interconnects for ITSOFC and SOEC
title Effect of high-temperature exposure on degradation of La0.6Sr0.4CoO3 coated metallic interconnects for ITSOFC and SOEC
spellingShingle Effect of high-temperature exposure on degradation of La0.6Sr0.4CoO3 coated metallic interconnects for ITSOFC and SOEC
Korb, Matias de Angelis
Aço inoxidável
Degradação
Tratamento térmico
Steel intreconnect
Coating
Lanthanum cobaltite
Impedance spectroscopy
title_short Effect of high-temperature exposure on degradation of La0.6Sr0.4CoO3 coated metallic interconnects for ITSOFC and SOEC
title_full Effect of high-temperature exposure on degradation of La0.6Sr0.4CoO3 coated metallic interconnects for ITSOFC and SOEC
title_fullStr Effect of high-temperature exposure on degradation of La0.6Sr0.4CoO3 coated metallic interconnects for ITSOFC and SOEC
title_full_unstemmed Effect of high-temperature exposure on degradation of La0.6Sr0.4CoO3 coated metallic interconnects for ITSOFC and SOEC
title_sort Effect of high-temperature exposure on degradation of La0.6Sr0.4CoO3 coated metallic interconnects for ITSOFC and SOEC
author Korb, Matias de Angelis
author_facet Korb, Matias de Angelis
Tarragó, Diego Pereira
Krischer, Cesar Augusto
Duluard, Sandrine
Ansart, Florence
Malfatti, Célia de Fraga
author_role author
author2 Tarragó, Diego Pereira
Krischer, Cesar Augusto
Duluard, Sandrine
Ansart, Florence
Malfatti, Célia de Fraga
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv Korb, Matias de Angelis
Tarragó, Diego Pereira
Krischer, Cesar Augusto
Duluard, Sandrine
Ansart, Florence
Malfatti, Célia de Fraga
dc.subject.por.fl_str_mv Aço inoxidável
Degradação
Tratamento térmico
topic Aço inoxidável
Degradação
Tratamento térmico
Steel intreconnect
Coating
Lanthanum cobaltite
Impedance spectroscopy
dc.subject.eng.fl_str_mv Steel intreconnect
Coating
Lanthanum cobaltite
Impedance spectroscopy
description Previous studies showed the formation of new phases affecting the electrical properties of LSC thin films deposited on stainless steel substrates, which are commonly tested for ITSOFC and SOEC interconnects. A 4.3 μm thick La0.6Sr0.4CoO3 coating was deposited on AISI430 steel by spray pyrolysis, followed by heat treatment (800°C/2h) and an oxidation in air (800°C/96h). The La0.6Sr0.4CoO3 phase interacted with the metallic substrate and formed SrCrO4 , causing degradation of the perovskite into La0.9Sr0.1CoO3 . An EDS mapping showed Sr and Cr enrichment in the coating/substrate interface. TG analysis indicated a lower mass gain for the coated substrate. The total ASR at 800°C of the interconnect before and after oxidation was 3.23 Ω.cm2 and 3.98 Ω.cm2 , respectively. The Ea underwent very small variation, remaining around 0.24 eV (T≤300°C) and 0.65 eV (T≥400°C). The reaction of Cr from the substrate and Sr from LSC seems to have impaired the performance of the interconnect.
publishDate 2020
dc.date.issued.fl_str_mv 2020
dc.date.accessioned.fl_str_mv 2021-07-07T04:36:24Z
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dc.identifier.uri.fl_str_mv http://hdl.handle.net/10183/223376
dc.identifier.issn.pt_BR.fl_str_mv 1516-1439
dc.identifier.nrb.pt_BR.fl_str_mv 001127893
identifier_str_mv 1516-1439
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url http://hdl.handle.net/10183/223376
dc.language.iso.fl_str_mv eng
language eng
dc.relation.ispartof.pt_BR.fl_str_mv Materials research : ibero-american journal of materials. São Carlos, SP. Vol. 23, n. 3 (2020), e20200084, p. 1-7
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:Repositório Institucional da UFRGS
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reponame_str Repositório Institucional da UFRGS
collection Repositório Institucional da UFRGS
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