Performance evaluation of machined and powder metallurgically fabricated Crofer®22 APU interconnects for SOFC applications

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dc.authorid0000-0002-7668-0204
dc.authorid0000-0002-8836-572X
dc.authorid0000-0003-3564-5493
dc.contributor.authorTopcu, Alparslan
dc.contributor.authorOzturk, Bulent
dc.contributor.authorCora, Omer Necati
dc.date.accessioned2026-01-24T12:31:11Z
dc.date.available2026-01-24T12:31:11Z
dc.date.issued2022
dc.departmentAlanya Alaaddin Keykubat Üniversitesi
dc.description.abstractThis study aimed to evaluate the performances of solid oxide fuel cell (SOFC) interconnects made of commercially available bulk Crofer (R) 22 APU alloy through machining, and powder metallurgy approach (P/M) from Crofer (R) 22 APU powders. To this goal, interconnects with 40 x 40 mm(2) active area were fabricated via both methods. Porosity, coefficient of thermal expansion (CTE) measurements, thermal shock, and single-cell performance tests were carried out. While no porosity was available for the machined interconnect, P/M inter-connect was found to have 9% porosity so the increased surface area. CTE values of interconnects, one of the critical parameters in fuel cell stack design, were found to be in close agreement. The maximum power values of 3.12 and 2.97 W were obtained for machined, and P/M interconnects, respectively, at operating temperature condition of 800 degrees C. Even though P/M interconnect exhibited slightly lower performance in terms of power density, it was concluded that P/M interconnect can be considered a reliable alter-native to the conventionally produced machined one due to ease of production, lower scrap rate, and potential to have a better cell performance as it has an increased surface scrap rate, and potential to have a better cell performance as it has an increased surface area. (C) 2021 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
dc.description.sponsorshipScientific and Technological Research Council of Turkey (TUBITAK) [114M502]
dc.description.sponsorshipThe authors acknowledge the partial support provided by the Scientific and Technological Research Council of Turkey (TUBITAK) through project #114M502.
dc.identifier.doi10.1016/j.ijhydene.2021.06.036
dc.identifier.endpage3448
dc.identifier.issn0360-3199
dc.identifier.issn1879-3487
dc.identifier.issue5
dc.identifier.scopus2-s2.0-85109423098
dc.identifier.scopusqualityQ1
dc.identifier.startpage3437
dc.identifier.urihttps://doi.org/10.1016/j.ijhydene.2021.06.036
dc.identifier.urihttps://hdl.handle.net/20.500.12868/5711
dc.identifier.volume47
dc.identifier.wosWOS:000740437700002
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherPergamon-Elsevier Science Ltd
dc.relation.ispartofInternational Journal of Hydrogen Energy
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WoS_20260121
dc.subjectSolid oxide fuel cell
dc.subjectMetallic interconnect
dc.subjectCrofer (R) 22 APU
dc.subjectPowder metallurgy
dc.subjectPerformance tests
dc.titlePerformance evaluation of machined and powder metallurgically fabricated Crofer®22 APU interconnects for SOFC applications
dc.typeArticle

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