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 +8 more
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Optimization of technological processes in the manufacturability of varistors based on recycled ZnO product, with emphasis on environmental sustainability. [PDF]
HeliyonThe 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 +4 more
europepmc +2 more sources
Electrical properties of ZnO varistors prepared by direct mixing of constituent phases [PDF]
Science of Sintering, 2006 Varistor samples containing different amounts of constituent phases were prepared by direct mixing of constituent phases. Detailed electrical characterization was performed to explain the influence of minor phases (spinel and intergranular phases) on ...
Branković G., Branković Z., Žunić M.
core +3 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 +9 more
europepmc +2 more sources
Large internal stress induced nonlinear current-voltage behavior in nanodiamond strengthened ZnO ceramics. [PDF]
Nat CommunThe modulation of the electrostatic potential barrier at grain boundaries determines the performance of many ceramic-based electronics such as varistors.
Yan P +7 more
europepmc +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 +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 +5 more
doaj +1 more source
Investigation of microstructure of ZnO varistors taken from surge arrester counters [PDF]
Archives of Metallurgy and Materials, 2019 The paper presents investigations of microstructure of varistors of damaged surge arrester counters. A similar ZnO varistor, not subjected before to operation, was a point of reference in this research.
P. Papliński +3 more
doaj +1 more source
Microstructure and Degree of Degradation of ZnO Varistors in Surge Arresters Due to Operation [PDF]
Archives of Metallurgy and Materials, 2018 The paper presents the test results for the microstructure of ZnO varistors comprising high voltage gapless surge arresters. The tests were performed on varistors produced in different periods and by various manufacturers.
P. Papliński +3 more
doaj +1 more source
Advances in the synthesis of ZnO nanomaterials for varistor devices [PDF]
Journal of Materials Chemistry C, 2013 ZnO based varistors are widely used for overvoltage protection in many electrical and electronic circuits, at voltages ranging from a few to over a million volts. By careful control of the microstructure, through nano-structuring by chemical routes, it should be possible to produce varistors with high breakdown voltage (Vc), as this is proportional to ...
Pillai, Suresh +3 more
openaire +3 more sources