Results 21 to 30 of about 2,304 (224)
مجلة المختار للعلوم, 2004 للسيراميك استخدامات عديدة علي نطاق واسع في مجال الكهرباء (الالكترونيات). ويتسع مدى هـذه الاستخدامات ليشمل الوقاية من خطر الجهد باستخدام الفارستور (Varistors) إلى مقاومات الفارستور (Varistors) ذات درجة الحرارة الموجبة إلى العوازل السيراميكية ...
D. E. Ibrahim, Osama Desouky
doaj +1 more source
High Voltage, 2020 Element doping is an effective method to improve the performance of ZnO varistors. Previous studies mainly focused on the variation of microstructures and Schottky barriers.
Men Guo +7 more
doaj +1 more source
Simulation research on space charge characteristics of zinc oxide varistor
Energy Reports, 2020 Zinc oxide (ZnO) lightning arresters have good protection performance and have been widely used in power systems. ZnO varistor is the core component of the arrester, and its electrical performance determines the overvoltage protection level of the ...
Qian Wang, Ruonan Zhang, Chenjie Ji
doaj +1 more source
Comparative Characterization of Different Cutting Strategies for the Sintered ZnO Electroceramics
Applied Sciences, 2021 Sintered zinc oxide (ZnO) ceramic is a fragile and difficult-to-cut material, so finishing operations demand handling cautious and accurate surface tolerances by polishing, grinding, or machining.
Jaka Dugar, Awais Ikram, Franci Pušavec
doaj +1 more source
Growth of ZnO thin films on GaAs by pulsed laser deposition [PDF]
, 1995 ZnO thin films have been grown on GaAs substrates using the pulsed laser deposition technique with or without a photodeposited SiO2 buffer layer. The presence of the SiO2 layer has a beneficial effect on the crystalline quality of the grown ZnO films ...
Boyd, Ian W. +4 more
core +3 more sources
Influence of processing on microstructure and electrical characteristics of multilayer varistors
Journal of Advanced Ceramics, 2019 The paper reports on the influence of processing on microstructure and electrical properties of multilayer varistors based on zinc oxide doped with Bi2O3, Sb2O3, Co2O3, MnO, Cr2O3, B2O3, and SiO2.
D. Szwagierczak, J. Kulawik, A. Skwarek
doaj +1 more source
Influence of Fine Crystal Percentage on the Electrical Properties of ZnO Ceramic-Based Varistors
Crystals, 2020 Herein, the effect of nanocrystal percentage in bulk-ZnO varistors was studied. The structure of ZnO nanocrystals was examined using X-ray diffraction (XRD) and field-emission scanning electron microscopy (FE-SEM).
Abdullah Aljaafari, Ahmed Sedky
doaj +1 more source
Active and Passive Electronic Components, 2003 The degradation of the epoxy resin-coated commercial ZnO varistors at elevated temperatures and ambient humid conditions has been investigated experimentally.
Jianying Li +3 more
doaj +1 more source
DC Aging Mechanism of Co2O3-Doped ZnO Varistors
Energies, 2021 Lowered power loss and asymmetrically electrical parameters are reported in the DC aging of Co2O3-doped ZnO varistors in this paper. Based on the frequency domain dielectric responses of the pristine and degraded samples, the present study explores the ...
Xia Zhao +5 more
doaj +1 more source
Polarity engineering in polycrystalline ZnO by inversion boundaries [PDF]
, 2014 Two distinctive polarity-engineered microstructures were obtained in polycrystalline ZnO ceramics by inducing two different types of inversion boundaries (IBs) inside individual grains to examine the effect of the different polarities on the varistor ...
Jeon, Sang-Yun +6 more
core +1 more source