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000050908 084__ $$2WoS$$aElectrochemistry
000050908 084__ $$2WoS$$aEnergy & Fuels
000050908 1001_ $$0P:(DE-Juel1)VDB2002$$aBatfalsky, P.$$b0$$uFZJ
000050908 245__ $$aChemical Interaction between Glass-Ceramic Sealants and Interconnect Steels in SOFC Stacks
000050908 260__ $$aNew York, NY [u.a.]$$bElsevier$$c2006
000050908 300__ $$a128 - 137
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000050908 440_0 $$03727$$aJournal of Power Sources$$v155$$x0378-7753
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000050908 520__ $$aIn order to gain insight into the mechanism causing performance degradation and/or failure, stacks of planar solid oxide fuel cells (SOFC) are routinely dismantled and examined after operation at Forschungszentrum Julich. The post-operation inspection focuses in particular on the chemical and mechanical compatibility aspects of cell and stack materials.In the present work a short-term degradation effect is addressed, which was found to be caused by unwanted chemical interactions between glass-ceramic sealants and ferritic steel interconnects. The post-operation inspection revealed severe steel corrosion along the seal rims. Under SOFC stack conditions rapidly growing oxide nodules were observed bridging the 200 mu m seal gal) between the metallic components after a few hundred hours of operation. These oxide nodules, rich in iron, gave rise to local short-circuiting effects eventually resulting in stack failure.The present study, combined with recent model investigations triggered by the stack results, indicates that severe degradation only occurs in the case of glass-ceramic sealants which contain minor amounts of PbO. Furthermore, the rate of corrosion attack of the metallic components strongly depends on the silicon (Si) content of the ferritic steel. The stack tests suggest that increasing the Si content increases the corrosion rate, and thus detrimentally influences the stack performance. (c) 2005 Elsevier B.V. All rights reserved.
000050908 536__ $$0G:(DE-Juel1)FUEK402$$2G:(DE-HGF)$$aRationelle Energieumwandlung$$cP12$$x0
000050908 536__ $$0G:(DE-Juel1)SOFC-20140602$$aSOFC - Solid Oxide Fuel Cell (SOFC-20140602)$$cSOFC-20140602$$fSOFC$$x1
000050908 588__ $$aDataset connected to Web of Science
000050908 650_7 $$2WoSType$$aJ
000050908 65320 $$2Author$$aSOFC stacks
000050908 65320 $$2Author$$aglass-ceramic sealants
000050908 65320 $$2Author$$ainterconnect materials
000050908 65320 $$2Author$$aferritic high-chromium steels
000050908 65320 $$2Author$$achemical interaction
000050908 65320 $$2Author$$ashort-circuiting
000050908 7001_ $$0P:(DE-Juel1)VDB20698$$aHaanappel, V. A. C.$$b1$$uFZJ
000050908 7001_ $$0P:(DE-Juel1)129755$$aMalzbender, J.$$b2$$uFZJ
000050908 7001_ $$0P:(DE-Juel1)129636$$aMenzler, N. H.$$b3$$uFZJ
000050908 7001_ $$0P:(DE-Juel1)VDB3021$$aShemet, V.$$b4$$uFZJ
000050908 7001_ $$0P:(DE-Juel1)129936$$aVinke, I. C.$$b5$$uFZJ
000050908 7001_ $$0P:(DE-Juel1)VDB1573$$aSteinbrech, R. W.$$b6$$uFZJ
000050908 773__ $$0PERI:(DE-600)1491915-1$$a10.1016/j.jpowsour.2005.05.046$$gVol. 155, p. 128 - 137$$p128 - 137$$q155<128 - 137$$tJournal of power sources$$v155$$x0378-7753$$y2006
000050908 8567_ $$uhttp://dx.doi.org/10.1016/j.jpowsour.2005.05.046
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