Results 11 to 20 of about 290 (180)

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

Micromachines, 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.
Maofeng Xu, Changkun Cai, Yu Shi, Manyi Xie, Yanlong Wu, Yuanyuan Liu, Jun Peng, Jinxiao Bao, Shengli An   +8 more
doaj   +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).
Pavol Liptai, Šimon Nagy, Bystrík Dolník, Miloš Matvija, Jana Pirošková   +4 more
doaj   +2 more sources

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

Scientific Reports, 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
Helena Greijer, Nicola Mirotta, Emanuele Treossi, Filippo Valorosi, Fabian Schütt, Leonard Siebert, Yogendra Kumar Mishra, Rainer Adelung, Vincenzo Palermo, Henrik Hillborg   +9 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
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, Zongxi Zhang, Songhai Fan, Tao Cui, Donghui Luo, Pengfei Meng, Yue Yin, Jingke Guo   +7 more
doaj   +2 more sources

Large internal stress induced nonlinear current-voltage behavior in nanodiamond strengthened ZnO ceramics [PDF]

Nature Communications
The modulation of the electrostatic potential barrier at grain boundaries determines the performance of many ceramic-based electronics such as varistors.
Peng Yan, Mingming Si, Yongping Liu, Yu Ren, Qi Ding, Weizhong Jiang, Yuchi Fan, Wan Jiang   +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

High 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, Yue Yin, Lei Wang, Jingke Guo, Zerui Li, Kai Zhou, Guangya Zhu, Yefei Xu   +7 more
doaj   +2 more sources

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

International 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, Hang Zhang, Kexin Zhang, Yubo Shen, Limin Qu, Yue Yin, Pengfei Meng, Jingke Guo   +7 more
doaj   +2 more sources

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

International 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, Zongxi Zhang, Songhai Fan, Tao Cui, Donghui Luo, Yue Yin, Pengfei Meng, Jingke Guo   +7 more
doaj   +2 more sources

Comparative Studies on Degradation of Varistors Subjected to Operation in Surge Arresters and Surge Arrester Counters [PDF]

Archives of Metallurgy and Materials, 2020
The paper presents results of investigation of microstructure and micro-hardness for material of ZnO varistors applied to 110 kV surge arrester and surge arrester counter.
P. Papliński, J. Wańkowicz, H. Śmietanka, P. Ranachowski, Z. Ranachowski, S. Kudela Jr, M. Aleksiejuk   +6 more
doaj   +1 more source

Effect of Zn7Sb2O12 pre-synthesis on microstructure and properties of ZnO varistor ceramics

AIP Advances, 2022
In this work, the Zn7Sb2O12 spinel phase is pre-synthesized at 980, 1000, 1020, 1040, and 1060 °C by mixing ZnO and Sb2O3 in a molar ratio of 7:1. ZnO varistors are prepared by replacing Sb2O3 with the Zn7Sb2O12 spinel phase.
Fei Zhu, Chang Liu, Jianlin Li, Deyi Zheng, Chi Pang, Zihao Fei   +5 more
doaj   +1 more source