Results 11 to 20 of about 2,272 (222)

Computational Model and Experimental Validation of the Influence of Grain‐Boundary Parameters on the Electrical Performance of Arrester Varistor

open access: yesInternational Journal of Ceramic Engineering & Science
From a materials‐computation perspective, this study integrates the electron‐excitation model of double Schottky‐barriers with a Voronoi network to characterize the microscopic electrical and structural properties of ZnO varistors.
Zhengzheng Fu   +7 more
doaj   +2 more sources

Analysis of the failure mechanism of ZnO varistors influenced by high‐resistance media based on multi‐field coupling simulation

open access: yesHigh Voltage
This study focuses on the distribution of high‐resistance media (pores and spinels) within ZnO varistors and explores the mechanical and electrical failure mechanisms of varistors under different pulse actions.
Pengfei Meng   +7 more
doaj   +2 more sources

Effect of the sintering temperature on the electrical properties of Y–Al‐doped ZnO varistors

open access: yesInternational Journal of Ceramic Engineering & Science
To investigate the relationship between the electrical properties of Y–Al doped ZnO varistors and sintering temperature, in this study, we measured the voltage–current characteristics and electrical performance parameters of samples sintered at 1100∘C ...
Lei Wang   +7 more
doaj   +2 more sources

Influence of Y–Bi–Co oxide doping on electrical performance of ZnO varistors based on simulation analysis

open access: yesInternational Journal of Ceramic Engineering & Science
ZnO varistors doped with Y2O3, Bi2O3, and Co2O3 were analyzed for electrical performance, microstructure, phase composition, and elemental distribution using electrical performance testing, scanning electron microscopy, X‐ray diffraction, and energy ...
Zhengzheng Fu   +7 more
doaj   +2 more sources

Size effect on properties of varistors made from zinc oxide nanoparticles through low temperature spark plasma sintering [PDF]

open access: yes, 2009
Conditions for the elaboration of nanostructured varistors by spark plasma sintering (SPS) are investigated, using 8-nm zinc oxide nanoparticles synthesized following an organometallic approach. A binary system constituted of zinc oxide and bismuth oxide
Angerer   +53 more
core   +2 more sources

Micro-Degradation Characteristics and Mechanism of ZnO Varistors under Multi-Pulse Lightning Strike

open access: yesEnergies, 2020
In view of the problem that ZnO varistors are often subjected to thermal breakdown and deterioration due to lightning strikes in low-voltage power distribution systems, this article used a 8/20 µs multi-pulse surge current with a pulse time interval of ...
Chunlong Zhang   +4 more
doaj   +1 more source

Electronic properties of SnO2-based ceramics with double function of varistor and humidity sensor [PDF]

open access: yes, 2009
This is the post-print version of the article. The official published version can be obtained from the link below - Copyright @ 2010 AD-Tech.Tin dioxide based varistor ceramics SnO2-Co3O4-Nb2O5-Cr2O3-xCuO (x=0; 0.05; 0.1 and 0.5) were made and their ...
Bulpett, R   +5 more
core   +1 more source

Revisiting the effects of Co(2)O(3) on multiscale defect structures and relevant electrical properties in ZnO varistors

open access: yesHigh 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

Current limiting and negative differential resistance in indium oxide based ceramics [PDF]

open access: yes, 2009
Indium oxide based ceramics with bismuth oxide addition were sintered in air in the temperature range 800-1300 ºC. Current-voltage characteristics of In2O3-Bi2O3 ceramics sintered at different temperatures are weakly nonlinear.
A.B. Glot   +41 more
core   +1 more source

دراسة التركيب النسيجي لأجسام سيراميكية من أكسيدي الزنك و السيريوم ((Microstructure study of Ce-doped – Ceramics containing Zinc and Cerium oxides))

open access: yesمجلة 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

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