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Effect of high-temperature exposure on degradation of La0.6Sr0.4CoO3 coated metallic interconnects for ITSOFC and SOEC
dc.contributor.author | Korb, Matias de Angelis | pt_BR |
dc.contributor.author | Tarragó, Diego Pereira | pt_BR |
dc.contributor.author | Krischer, Cesar Augusto | pt_BR |
dc.contributor.author | Duluard, Sandrine | pt_BR |
dc.contributor.author | Ansart, Florence | pt_BR |
dc.contributor.author | Malfatti, Célia de Fraga | pt_BR |
dc.date.accessioned | 2021-07-07T04:36:24Z | pt_BR |
dc.date.issued | 2020 | pt_BR |
dc.identifier.issn | 1516-1439 | pt_BR |
dc.identifier.uri | http://hdl.handle.net/10183/223376 | pt_BR |
dc.description.abstract | 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. | en |
dc.format.mimetype | application/pdf | pt_BR |
dc.language.iso | eng | pt_BR |
dc.relation.ispartof | Materials research : ibero-american journal of materials. São Carlos, SP. Vol. 23, n. 3 (2020), e20200084, p. 1-7 | pt_BR |
dc.rights | Open Access | en |
dc.subject | Steel intreconnect | en |
dc.subject | Aço inoxidável | pt_BR |
dc.subject | Coating | en |
dc.subject | Degradação | pt_BR |
dc.subject | Lanthanum cobaltite | en |
dc.subject | Tratamento térmico | pt_BR |
dc.subject | Impedance spectroscopy | en |
dc.title | Effect of high-temperature exposure on degradation of La0.6Sr0.4CoO3 coated metallic interconnects for ITSOFC and SOEC | pt_BR |
dc.type | Artigo de periódico | pt_BR |
dc.identifier.nrb | 001127893 | pt_BR |
dc.type.origin | Nacional | pt_BR |
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