Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.13087/2591
Title: Comparison of electrical properties of ZnO-Bi2O3-based ceramics prepared by conventional and spark plasma sintering (SPS) methods
Authors: Apaydın, Fatih
Çelik, Ali
Kara, Ferhat
Toplan, Hüseyin Özkan
Keywords: Varistor
Bi2O3
Spark plasma sintering (SPS)
I-V properties
Grain-Growth
Zno
Microstructure
Varistors
Cuo
System
Issue Date: 2022
Publisher: Springer
Abstract: ZnO-Bi2O3-metal oxide systems are successfully utilized as varistors due to their non-linear I-V behavior. The electrical properties of ZnO-based varistors strongly depends on grain boundary phase composition and microstructural features. In this study, ZnO-based varistors containing different amount of CuO (0-2 mol%) were sintered by conventional and spark plasma sintering (SPS) methods, which resulted different I-V characteristics. While the samples sintered by SPS method were observed to have smaller grain size, more homogenous microstructure and higher density, grain boundary thickness reduced due to removal of bismuth, which was the result of high vacuum environment during sintering step. Since the barrier thickness of SPSed samples decreased, a lower breakdown electrical field (E-b) value was recorded in comparison to conventionally sintered samples. It was also detected that E-b values of both conventional and SPS samples increased with increasing CuO content.
URI: https://doi.org/10.1007/s41779-022-00731-4
https://hdl.handle.net/20.500.13087/2591
ISSN: 2510-1560
2510-1579
Appears in Collections:Scopus İndeksli Yayınlar Koleksiyonu
WoS İndeksli Yayınlar Koleksiyonu

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