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DIGITAL.CSIC
Article . 2008 . Peer-reviewed
Data sources: DIGITAL.CSIC
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Processing parameters for ZnO-based thick film varistors obtained by screen printing

Authors: Rubia, Miguel Ángel de la; Peiteado, Marco; Fernández Lozano, José Francisco; Caballero Cuesta, Amador; Frutos, José de; Holc, J.; Drnovsek, S.; +3 Authors

Processing parameters for ZnO-based thick film varistors obtained by screen printing

Abstract

[ES] Se han preparado varistores basados en el sistema ZnO-Bi2O3-Sb2O3 en forma de lámina gruesa sobre sustratos de alúmina densa. Diferentes parámetros del procesamiento como la viscosidad de la pasta, los ciclos de calcinación y sinterización y el espesor en verde y sinterizado han sido estudiados para mejorar el procesamiento de los varistores basados en ZnO preparados en forma de lámina gruesa. Los polvos de partida fueron pretratados de dos formas diferentes con el objetivo de controlar la formación de la fase líquida rica en bismuto y la excesiva volatilización de Bi2O3 durante la sinterización debida a la alta relación área-volumen de las láminas gruesas. Se han observado cambios significativos en las propiedades eléctricas relacionadas con los diferentes ciclos de calcinado y con la selección de los polvos de partida.

[EN] Thick film varistors based on the ZnO-Bi2O3-Sb2O3 system have been prepared by screen printing on dense alumina substrates. Different processing parameters like the paste viscosity, burn out and sintering cycles, green and sintered thickness, have been studied to improve the processing of ZnO-based thick film varistors. Starting powders were pre-treated in two different ways in order to control both the Bi-rich liquid phase formation and the excessive volatilization of Bi2O3 during sintering due to the high area/volume ratio of the thick films. Significant changes have been observed in the electrical properties related to the different firing schedule and selection of the starting powders.

This work has been developed within Marie Curie Training Site Ceramos (HPMT-CT-2001-00372) program and CYCYTMAT2004-04843-C02 project.

Peer reviewed

Country
Spain
Related Organizations
Keywords

Serigrafía, Procesamiento, Varistors, propiedades eléctricas, screen printing, Clay industries. Ceramics. Glass, Processing, procesamiento, TP785-869, serigrafía, lámina gruesa, electrical properties, Electrical properties, Varistor, processing, Screen printing, Lámina gruesa, Thick film, Propiedades eléctricas

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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!
0
Average
Average
Average
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gold