Results 11 to 20 of about 215,655 (219)

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

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, Yao Wang, Kangning Wu, Lei Zhang, Lei Zhang, Xia Zhao, Ying Lin, Jianying Li   +7 more
doaj   +2 more sources

Strain-Induced Redistribution of Point Defects in ZnO Nanoparticles. [PDF]

Small Sci
Powder compaction generates local strain effects in ZnO nanoparticles. This alters the abundance of intrinsic point defects and impacts the semiconductor's electronic structure. Such changes were analyzed by a combination of spectroscopy and density functional theory calculations and emphasize the importance of strain effects in the design and ...
Aicher K, Berger T, Litovoilis A, Aschauer U, Diwald O.   +4 more
europepmc   +2 more sources

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, Haibin Shen, Men Guo, Ziming He, Yupeng Li, Ran Wen   +5 more
doaj   +2 more sources

The Grain Growth Control of ZnO-V₂O₅ Based Varistors by PrMnO₃ Addition. [PDF]

Micromachines (Basel), 2022
In this study, the grain growth behaviour of ZnO-V2O5-based ceramics with 0.25–0.75 mol% additions of PrMnO3 was systematically investigated during sintering from 850 °C to 925 °C.
Xu M, Cai C, Shi Y, Xie M, Wu Y, Liu Y, Peng J, Bao J, An S.   +8 more
europepmc   +2 more sources

Optimization of technological processes in the manufacturability of varistors based on recycled ZnO product, with emphasis on environmental sustainability. [PDF]

Heliyon
The main objective described in this paper is the optimization of technological parameters in the production of varistors based on recycled zinc oxide (ZnO).
Liptai P, Nagy Š, Dolník B, Matvija M, Pirošková J.   +4 more
europepmc   +2 more sources

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

Energies, 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, Hongyan Xing, Chunying Li, Ran Cai, Dongbo Lv   +4 more
doaj   +2 more sources

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

International Journal of Ceramic Engineering &Science, Volume 8, Issue 1, January 2026.
This paper presents a calculation model for the nonlinear characteristics of varistors based on a basic conductive mechanism, and it has been verified through experiments. The mechanism of the barrier's effect on electrical performance has been obtained.
Zhengzheng Fu, Zongxi Zhang, Songhai Fan, Tao Cui, Donghui Luo, Pengfei Meng, Yue Yin, Jingke Guo   +7 more
wiley   +2 more sources

Tuneable conductivity at extreme electric fields in ZnO tetrapod-silicone composites for high-voltage power cable insulation. [PDF]

Sci Rep, 2022
Resistive Field Grading Materials (RFGM) are used in critical regions in the electrical insulation system of high-voltage direct-current cable systems. Here, we describe a novel type of RFGM, based on a percolated network of zinc oxide (ZnO) tetrapods in
Greijer H, Mirotta N, Treossi E, Valorosi F, Schütt F, Siebert L, Mishra YK, Adelung R, Palermo V, Hillborg H.   +9 more
europepmc   +2 more sources

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

High Voltage, Volume 10, Issue 3, Page 673-679, June 2025.
Abstract This study focuses on the distribution of high‐resistance media (pores and spinels) within ZnO $\text{ZnO}$ varistors and explores the mechanical and electrical failure mechanisms of varistors under different pulse actions. Micro‐CT technology revealed that the proportion of high‐resistance media in the edge area is much higher than in the ...
Pengfei Meng, Yue Yin, Lei Wang, Jingke Guo, Zerui Li, Kai Zhou, Guangya Zhu, Yefei Xu   +7 more
wiley   +2 more sources

Electrical degradation of double-Schottky barrier in ZnO varistors

AIP Advances, 2016
Researches on electrical degradation of double-Schottky barrier in ZnO varistors are reviewed, aimed at the constitution of a full picture of universal degradation mechanism within the perspective of defect.
Jinliang He, Chenlu Cheng, Jun Hu
doaj   +2 more sources