Results 81 to 90 of about 904 (223)

Microstructure engineering to drastically reduce the leakage currents of high voltage ZnO Varistor ceramics

open access: yes, 2012
[EN] The energetic losses associated with the leakage currents can represent a serious problem for the efficient performance of ZnO-based varistor ceramics.
Caballero Cuesta, Amador   +5 more
core   +2 more sources

Boundary breakdown time of ZnO varistors under nanosecond pulse current

open access: yesAIP Advances, 2019
Conductive properties of zinc oxide (ZnO) varistor ceramics depend on the boundary barrier structure. By using the photoconductivity switches (PCSS) technology, the boundary breakdown characteristics of ZnO varistors for nanosecond electric pulse ...
Guangyong Xie, Mengyuan Wu, Wei Shi
doaj   +1 more source

Penghasilan varistor ZnO melalui kaedah pencampuran konvensional dan pengelompokan induk

open access: yes, 2010
Varistor berasaskan zink oksida, ZnO telah difabrikasikan menggunakan teknik percampuran konvensional dan pengelompokan induk (PI). Kesan halaju pengisaran mesin pengisar bola planet (PBM) semasa proses penghomogenan dalam penghasilan varistor ...
Noor Azira, Mohd Noor
core  

Fabrication of Sn-Doped ZnO Varistor by Solid State Processing

open access: yes, 2011
In this work, systematic substitution of ZnO with SnO2 in ZnO-based varistor composition was investigated through analysis of densification, phase formation, microstructure and non-linear properties. The general formula was Zn0.96-xSnxBi0.02Co0.02Oβ with
Warunee Srichan   +4 more
core   +1 more source

The Role of Polypyrrole in Electrical Properties of ZnO-Polymer Composite Varistors [PDF]

open access: yesIranian Journal of Chemistry & Chemical Engineering, 2017
Composite films on the base of ZnO with different weight percentages of polypyrrole have been prepared using the hot pressing method and their current-voltage characteristics have been studied. Results show that the films have nonlinear varistor behavior
Nasim Asaadi   +3 more
doaj  

KONTROLLÜKİMYASAL ÇÖKT{}RME YÖNTEMİ İLE ÜRETİLEN YÜKSEK VOL TAJ.LI Zn O \7 ARİSTÖRLERİN MİKROYAPISAL ÖZELI.�İKLERİNİN İNCELENMESİ

open access: yesSakarya Üniversitesi Fen Bilimleri Enstitüsü Dergisi, 2003
ZnO esaslı varistörl e r çok bileşenli yarı iletkenseraınil\lerdir. Çok bileşe nli ollt;sit seranıiklerinelektrik s el da,ıra nışları hen1 malzemeninmikroyapısına henı de ZnO t a n e sınırlarında oluianürünlerin yapısına bağlidır.
Özlem YÜKSEL   +2 more
doaj   +1 more source

Influence of processing parameters on microstructure and electrical properties of ZnO-based varistor ceramics

open access: yesDiscover Electronics
ZnO-based varistors are widely used in electrical equipment for surge protection. This research explores the influence of sintering parameters—such as sintering temperature, ramp rate and soaking time—on microstructure development and V-I characteristics
Muhammad Hassan   +3 more
doaj   +1 more source

Microstructure and electrical properties of Y(NO(3))(3)center dot 6H(2)O-doped ZnO-Bi(2)O(3)-based varistor ceramics

open access: yes, 2011
Y(NO(3))center dot 6H(2)O-doped ZnO-Bi(2)O(3)-based varistor ceramics were prepared using a solid reaction route. The microstructure, electrical properties, degradation coefficient (D(V)), and dielectric characteristics of varistor ceramics were studied ...
Cheng XN   +5 more
core  

Zno varistor of low-temperature sintering ability

open access: yes, 2011
[[abstract]]Zinc oxide (ZnO) varistors containing vanadium oxide as the principal additive and one or more cobalt oxides and/or manganese oxides additives exhibit excellent nonlinear current-voltage characteristics.
Wu, Tai-Bor;Tsai, Jyh-Kuang
core  

Características microestructurales de varistores del sistema ZnO-BaO-P2O5

open access: yesBoletín de la Sociedad Española de Cerámica y Vidrio, 1999
Ceramic materials based on the system ZnO-BaO show a great potential for varistor applications. However, the BaO rich phase located at the grain boundaries shows high solubility in water which causes severe damage of the materials.
Fernández, J. F.   +5 more
doaj  

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