Results 11 to 20 of about 968 (215)
Computer Simulation of ZnO Varistors Failures [PDF]
MRS Proceedings, 1997 ABSTRACTA simple thermo-mechanical model is applied to evaluate the influence of the nonuni-formity of ZnO varistor disks used in surge arresters on their energy handling capability. By solving heat transfer equations for a varistor disk with nonuniform electrical properties, we compute the time dependence of the temperature profile and the ...
Bartkowiak, M. +3 more
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International Journal of Ceramic Engineering & ScienceFrom 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
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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
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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
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High VoltageThis 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
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Boundary breakdown time of ZnO varistors under nanosecond pulse current
AIP 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
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Effect of the sintering temperature on the electrical properties of Y–Al‐doped ZnO varistors
International Journal of Ceramic Engineering & ScienceTo 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
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International Journal of Ceramic Engineering & ScienceZnO 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
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Strain-Induced Redistribution of Point Defects in ZnO Nanoparticles. [PDF]
Small SciPowder 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 +4 more
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High performance ZnO varistors prepared from nanocrystalline precursors for miniaturised electronic devices [PDF]
, 2008 An industrially viable solution-based processing route using minimal amounts of solvent has been used to prepare bulk quantity nanopowders (average particle size 15 3 nm) for the fabrication of ZnO varistors. The xerogels, calcined powders and sintered
Raghavendra, Ramesh +7 more
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