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Boletín de la Sociedad Española de Cerámica y Vidrio
Article . 2008 . Peer-reviewed
License: Elsevier TDM
Data sources: Crossref
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DIGITAL.CSIC
Article . 2009 . Peer-reviewed
Data sources: DIGITAL.CSIC
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Cermets Ni-GDC para su uso como ánodos en IT-SOFC basadas en electrolitos GDC

Ni-GDC anode for GDC electrolyte-based IT-SOFC
Authors: Tartaj, Jesús; Moure Jiménez, Carlos; Gil, Vanesa;

Cermets Ni-GDC para su uso como ánodos en IT-SOFC basadas en electrolitos GDC

Abstract

[ES] El objetivo de este trabajo es estudiar en un amplio rango de temperaturas (1000-1450ºC) y mediante difracción de rayos-X (DRX) las posibles reacciones en estado sólido que pueden tener lugar en las regiones interfaciales de sistemas constituidos por composites NiO-Ce0.9Gd0.1O1.95 (NiO-GDC) con un 50% en peso de NiO, y de Cermets Ni- Ce0.9Gd0.1O1.95 (Ni-GDC) con un 39% en volumen Ni, y electrolitos basados en soluciones sólidas Ce0.9Gd0.1O1.95 (GDC). Y así mismo, estudiar la compatibilidad termoquímica y termomecánica entre los distintos materiales cerámicos que constituyen los sistemas electrolito/ánodo. Se confirma mediante MEB y análisis EDAX que los sistemas cosinterizados entre 1350 y 1400ºC durante 2h y constituidos por un electrolito basado en ceria (GDC) y un ánodo basado en un cermet níquel-ceria (Ni-GDC), presentan una buena adherencia entre capas, sin la formación de defectos y sin la presencia de interdifusión de especies a lo largo de la región interfacial. Es decir, se confirma que ambos materiales, Ni-GDC y GDC son compatibles termoquímica y termomecánicamente.

[EN] The purpose of this work is to investigate the possible solid state reactions between the NiO-Ce0.9Gd0.1O1.95 (NiO-GDC) composites with 50% wt NiO, and cermets Ni- Ce0.9Gd0.1O1.95 (Ni-GDC) with 39 vol. % of Ni, and electrolyte solid solutions based on Ce0.9Gd0.1O1.95 (GDC) employing the X-ray diffraction technique. At the same time the thermochemical and thermomechanical compatibility between these materials was established. Results obtained from SEM and EDAX analysis showed that the electrolyte based on ceria (GDC) and the anode based on nickel-ceria cermet (Ni-GDC) present good adhesion and well defined interfaces. No reactive phases and other type of defects were detected. This study showed that both materials, Ni-GDC and GDC are thermochemical and thermomechanically compatible.

Este trabajo ha sido realizado dentro de un proyecto financiado por la comisión Interministerial de Ciencia y Tecnología de España (CICYT, Proyecto Ref. MAT2003-01163). Los autores también agradecen a la Comunidad Autónoma de Madrid la concesión de una beca predoctoral FPI.

Peer reviewed

Country
Spain
Related Organizations
Keywords

TP785-869, Compatibilidad química, chemical compatibility, CeO2-Gd2O3, compatibilidad química, Clay industries. Ceramics. Glass, Chemical compatibility, compatibilidad termomecánica, Thermal compatibility, Ni-CGO cermet, Compatibilidad termomecánica, thermal compatibility

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
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