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000828422 037__ $$aFZJ-2017-02383
000828422 041__ $$aEnglish
000828422 1001_ $$0P:(DE-Juel1)165868$$aGrünwald, Nikolas$$b0$$eCorresponding author
000828422 1112_ $$a92. DKG Jahrestagung & Symposium Hochleistungskeramik 2017$$cBerlin$$d2017-03-19 - 2017-03-22$$wGermany
000828422 245__ $$aMicrostructural Evolution of Atmospheric Plasma Sprayed Manganese Cobalt Iron Oxide Protection Layers for Solid Oxide Fuel Cells
000828422 260__ $$c2017
000828422 3367_ $$033$$2EndNote$$aConference Paper
000828422 3367_ $$2DataCite$$aOther
000828422 3367_ $$2BibTeX$$aINPROCEEDINGS
000828422 3367_ $$2DRIVER$$aconferenceObject
000828422 3367_ $$2ORCID$$aLECTURE_SPEECH
000828422 3367_ $$0PUB:(DE-HGF)6$$2PUB:(DE-HGF)$$aConference Presentation$$bconf$$mconf$$s1490357050_17085$$xAfter Call
000828422 520__ $$aIn sold oxide fuel cells (SOFCs), chromium containing steels are widely used as interconnect material. On the one hand they fulfill the component’s demands, but on the other hand chromium species that evaporate at the high SOFCs working temperatures lead to a strong degradation of commonly used cathode materials. This chromium poisoning can be minimized by inserting a chromium protection layer between interconnect and cathode. Atmospheric plasma sprayed (APS) Mn1.0Co1.9Fe0.1O4 (MCF) protective coatings have proven their effectiveness in reducing degradation rates within operated stacks in Jülich. Previous studies revealed phase and microstructural changes of these layers during annealing in air but couldn’t explain the underlying mechanisms, which are crucial for long term predictions. This study investigates long term annealed samples and will concentrate on the microstructural and phase changes, enabling a lifetime prediction of APS-MCF coatings. A self-healing of microcracks, which are present in as-sprayed coatings, is observed after annealing at 500°C in air. Diffraction patterns of the initial and annealed state reveal a phase change linked to the annealing process, explaining the healing effect by a volume expansion connected to an oxygen uptake. Visualization of the elemental distribution shows a demixing of cobalt and manganese after annealing at 700°C that is described by a simple model. Combining these results with those obtained from long term operated stacks can allow lifetime predictions of such protection layers.
000828422 536__ $$0G:(DE-HGF)POF3-135$$a135 - Fuel Cells (POF3-135)$$cPOF3-135$$fPOF III$$x0
000828422 536__ $$0G:(DE-Juel1)SOFC-20140602$$aSOFC - Solid Oxide Fuel Cell (SOFC-20140602)$$cSOFC-20140602$$fSOFC$$x1
000828422 536__ $$0G:(DE-Juel1)HITEC-20170406$$aHITEC - Helmholtz Interdisciplinary Doctoral Training in Energy and Climate Research (HITEC) (HITEC-20170406)$$cHITEC-20170406$$x2
000828422 7001_ $$0P:(DE-Juel1)129636$$aMenzler, Norbert H.$$b1
000828422 7001_ $$0P:(DE-Juel1)161591$$aGuillon, Olivier$$b2$$ufzj
000828422 7001_ $$0P:(DE-Juel1)129670$$aVassen, Robert$$b3$$ufzj
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000828422 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)165868$$aForschungszentrum Jülich$$b0$$kFZJ
000828422 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)129636$$aForschungszentrum Jülich$$b1$$kFZJ
000828422 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)161591$$aForschungszentrum Jülich$$b2$$kFZJ
000828422 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)129670$$aForschungszentrum Jülich$$b3$$kFZJ
000828422 9131_ $$0G:(DE-HGF)POF3-135$$1G:(DE-HGF)POF3-130$$2G:(DE-HGF)POF3-100$$3G:(DE-HGF)POF3$$4G:(DE-HGF)POF$$aDE-HGF$$bEnergie$$lSpeicher und vernetzte Infrastrukturen$$vFuel Cells$$x0
000828422 9141_ $$y2017
000828422 920__ $$lyes
000828422 9201_ $$0I:(DE-Juel1)IEK-1-20101013$$kIEK-1$$lWerkstoffsynthese und Herstellungsverfahren$$x0
000828422 9201_ $$0I:(DE-82)080011_20140620$$kJARA-ENERGY$$lJARA-ENERGY$$x1
000828422 980__ $$aconf
000828422 980__ $$aVDB
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000828422 981__ $$aI:(DE-Juel1)IMD-2-20101013