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000012262 0247_ $$2DOI$$a10.1016/j.jpowsour.2010.06.007
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000012262 084__ $$2WoS$$aElectrochemistry
000012262 084__ $$2WoS$$aEnergy & Fuels
000012262 1001_ $$0P:(DE-Juel1)VDB2712$$aNiewolak, L.$$b0$$uFZJ
000012262 245__ $$aPotential Suitability of Ferritic and Austenitic Steels as Interconnect Materials for Solid Oxide Fuel Cells Operating at 600°C
000012262 260__ $$aNew York, NY [u.a.]$$bElsevier$$c2010
000012262 300__ $$a7600 - 7608
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000012262 440_0 $$03727$$aJournal of Power Sources$$v195$$x0378-7753$$y22
000012262 500__ $$aThe authors are grateful for financial support from the European Commission under contract No. SES6-2006-020089 (project SOFC600).
000012262 520__ $$aThe oxidation behavior of a number of commercially available ferritic and austenitic steels was tested in air and in two simulated anode gases of a solid oxide fuel cell (SOFC) to evaluate the potential suitability as construction materials for interconnects in SOFC's operating at 600 degrees C. During air exposure all studied materials showed excellent oxidation resistance due to formation of a protective, double layered chromia/spinel surface scale even if the steel Cr content was as low as 17%. However, in the anode side gases the presence of water vapour (and possibly CO/CO2) increased the tendency to form poorly protective Fe-base oxide scales, in combination with internal oxidation of Cr. The occurrence of this adverse effect could be suppressed not only by increased Cr contents of the alloy but also by a small alloy grain size either in the bulk of the material Or in the specimen/component surface. The latter can be promoted by cold work e.g. introduced by specimen/component grinding. As high Cr contents may lead to undesired sigma-phase formation and defined surface treatments of an interconnect will not be possible in all designs, the relatively low operating temperature of 600 degrees C, resulting in low Cr diffusivity in the alloy grains, may require the use of a fine grained interconnect material to obtain and sustain protective chromia base surface scale formation during long-term operation. (C) 2010 Elsevier B.V. All rights reserved.
000012262 536__ $$0G:(DE-Juel1)FUEK402$$2G:(DE-HGF)$$aRationelle Energieumwandlung$$cP12$$x0
000012262 536__ $$0G:(DE-Juel1)SOFC-20140602$$aSOFC - Solid Oxide Fuel Cell (SOFC-20140602)$$cSOFC-20140602$$fSOFC$$x1
000012262 588__ $$aDataset connected to Web of Science
000012262 65320 $$2Author$$aSOFC
000012262 65320 $$2Author$$aInterconnect
000012262 65320 $$2Author$$aFerritic steel
000012262 65320 $$2Author$$asigma-Phase
000012262 65320 $$2Author$$aOxidation
000012262 650_7 $$2WoSType$$aJ
000012262 7001_ $$0P:(DE-Juel1)129810$$aWessel, E.$$b1$$uFZJ
000012262 7001_ $$0P:(DE-Juel1)129795$$aSingheiser, L.$$b2$$uFZJ
000012262 7001_ $$0P:(DE-Juel1)129782$$aQuadakkers, W. J.$$b3$$uFZJ
000012262 773__ $$0PERI:(DE-600)1491915-1$$a10.1016/j.jpowsour.2010.06.007$$gVol. 195, p. 7600 - 7608$$p7600 - 7608$$q195<7600 - 7608$$tJournal of power sources$$v195$$x0378-7753$$y2010
000012262 8567_ $$uhttp://dx.doi.org/10.1016/j.jpowsour.2010.06.007
000012262 8564_ $$uhttps://juser.fz-juelich.de/record/12262/files/FZJ-12262_PV.pdf$$yRestricted$$zPublished final document.
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000012262 9132_ $$0G:(DE-HGF)POF3-135$$1G:(DE-HGF)POF3-130$$2G:(DE-HGF)POF3-100$$aDE-HGF$$bForschungsbereich Energie$$lSpeicher und vernetzte Infrastrukturen$$vFuel Cells$$x0
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