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TitleChemical compatibility of chromium-based interconnect related materials with doped cerium oxide electrolyte
Publication TypeJournal Article
Year of Publication1999
AuthorsHatchwell, C.E., Sammes N.M., Tompsett G.A., and Brown I.W.M.
JournalJournal of the European Ceramic Society
Pagination1697 - 1703
Date Published1999
ISSN09552219 (ISSN)
KeywordsAnnealing, Ceramic materials, Cerium compounds, Cerium oxide, Chemical compatibility, Chromium compounds, Doping (additives), Fuel cells, Gadolinium compounds, Powders, Scanning electron microscopy, Solid electrolytes, Solid oxide fuel cells, X ray diffraction analysis
AbstractX-ray diffraction and scanning electron microscopy were used to study the chemical compatibility of (La, Sr)CrO3, SrCrO4, CaCrO4 and Cr2O3 (materials associated with the interconnect of a solid oxide fuel cell) with gadolinia-doped cerium oxide electrolyte (CGO). Powder mixtures and multilayer pellets of the interconnect related materials were annealed with CGO in air at temperatures ranging from 650 to 1600°C for durations of up to 400 h. No reaction was observed between (La,Sr)CrO3 and Ce0.8Gd0.2O1.9 after annealing at 1600°C for 10 h. However, SrCrO4, CaCrO4 and Cr2O3 reacted with CGO, forming an unidentified phase.

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