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Título

Orientation relationships and interfaces in directionally solidified eutectics for solid oxide fuel cell anodes

Autor Serrano-Zabaleta, S.; Laguna-Bercero, M. A.; Ortega, Luis; Larrea, A.
Fecha de publicación 2014
EditorElsevier
Citación Journal of the European Ceramic Society 34(9): 2123-2132 (2014)
ResumenOrientation relationships (ORs), interface planes and growth directions of the directionally solidified eutectics NiO-YSZ, CoO-YSZ, NiO-CeO2, NiO-GDC, CoO-CeO2 and CoO-GDC have been determined by means of electron backscatter diffraction (EBSD). The eutectics were prepared by the laser floating zone technique at different growth rates (10-200mm/h) to explore dissimilar lamellar spacing. The majority OR is characterized by a single (111)NiO/CoO//(001)YSZ/GDC/CeO2 interface plane and two different growth directions: [01-1]NiO/CoO//[010]YSZ/GDC/CeO2 and [11-0]NiO/CoO~//[110]YSZ/GDC/CeO2, the OR being the same for both cases. In addition, a cube-on-cube OR, where the crystallographic axes of the component phases are parallel, has also been observed. These experimental results are discussed in terms of the ionic charge balance and the lattice misfit at the interface. The coincidence of reciprocal lattice points model (CRLP) has also been applied to the NiO-YSZ case. The most favourable ORs predicted by the CRLP model are consistent with the experimental findings. © 2013 Elsevier Ltd.
Descripción Directionally Solidified Eutectics: Selected Papers from DSEC IV.
Versión del editorhttp://dx.doi.org/10.1016/j.jeurceramsoc.2013.06.008
URI http://hdl.handle.net/10261/102967
DOI10.1016/j.jeurceramsoc.2013.06.008
Identificadoresdoi: 10.1016/j.jeurceramsoc.2013.06.008
issn: 0955-2219
e-issn: 1873-619X
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