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Boletín de la Sociedad Española de Cerámica y Vidrio
Article . 2005 . Peer-reviewed
License: Elsevier TDM
Data sources: Crossref
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DIGITAL.CSIC
Article . 2008 . Peer-reviewed
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Efecto de la adición de Ag en Bi-2212 texturado mediante laser

Ag addition effect on laser textured Bi-2212 samples abstract
Authors: Mora Alfonso, Mario; Sotelo, Andres; Amaveda, H.; Madre, M. A.; Diez, J. C.; Angurel, Luis A.; Fuente, Germán F. de la;

Efecto de la adición de Ag en Bi-2212 texturado mediante laser

Abstract

[ES] La incorporación de Ag en los compuestos de Bi-2212 ha demostrado ser un método adecuado para mejorar tanto las propiedades mecánicas, térmicas como eléctricas de estos materiales. Las propiedades finales dependen fuertemente de la cantidad de Ag añadida al sistema pero también del tipo de procesado que sufre. En el presente trabajo se realiza un estudio del efecto de la adición de Ag en materiales masivos Bi-2212 texturados mediante fusión zonal inducida por láser, con el objetivo de comprender el efecto de la adición de Ag en sistemas Bi-2212 que pasan totalmente por un fundido. Para ello se preparon muestras con diferentes contenidos en Ag (hasta el 40% en peso). Debido a la inmiscibilidad en estado sólido de la Ag y del Bi-2212, se ha utilizado un método de síntesis de estos materiales por medio de técnicas sol-gel para asegurar una buena homogeneidad y un tamaño de partícula reducido en la cerámica de partida. A partir de estos polvos se prepararon los precursores que posteriormente fueron transformados en materiales texturados tras pasarlos por un fundido inducido mediante láser. Posteriormente se analizan los cambios de las muestras en función del porcentaje de Ag, tanto antes como después de un recocido. Estos cambios se correlacionan con las propiedades mecánicas y eléctricas de las muestras.

[EN] mechanical properties as well as the electrical ones. The final properties have been found to be in strong dependence of Ag content and the processing technique. In the present work the influence of Ag addition on Bi-2212 bulk materials grown from the melt, using a laser floating zone melting technique, has been studied. Samples with different Ag contents (0 to 40 wt.%) were prepared for this work. The Bi-2212 + x wt.% Ag powders have been prepared by a sol-gel method via nitrates to assure total cation solution, small particle size and good homogeneity in the mixture. Cylindrical precursors, fabricated from these powders, were used as feed in a LFZ melting installation to obtain textured Bi-2212/Ag composites. The effect of the Ag addition on the microstructure is analysed as a function of Ag content. The changes on the microstructure are also correlated with the mechanical and superconducting properties.

Los autores desean agradecer al Ministerio de Ciencia y Tecnología (MCyT, MAT 2002-04121-C03-02) y al Gobierno de Aragón (Grupos Consolidados de Investigación) su apoyo financiero.

Peer reviewed

Country
Spain
Keywords

Fusión zonal, Plata, Silver, Propiedades mecánicas, Fusión Zonal, Clay industries. Ceramics. Glass, Mechanical properties, TP785-869, Melting zone, Bi-2212

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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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