Results 71 to 80 of about 905 (222)
Cerâmica, 2005 Um dos grandes desafios no processamento cerâmico é a obtenção de dispersões de partículas estáveis e homogêneas contendo materiais com diferentes características físicas e químicas, como densidade, área de superfície específica, distribuição de tamanho ...
S. L. M. Brito, D. Gouvêa, R. Ganzella
doaj +1 more source
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 +7 more
wiley +1 more source
Zno varistor of low-temperature sintering ability [PDF]
, 2011 [[abstract]]Zinc oxide (ZnO) varistors containing vanadium oxide as the principal additive and one or more cobalt oxides and/or manganese oxides additives exhibit excellent nonlinear current-voltage characteristics.
Wu, Tai-Bor;Tsai, Jyh-Kuang
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Boletín de la Sociedad Española de Cerámica y Vidrio, 2012 Typically Titanium oxide is added to the formulation of Bi2O3-doped ZnO based varistors to enhance the growth of ZnO grains, thus allowing their application in low voltage devices. However its incorporation to formulation based on the ZnOBi2O3-Sb2O3 (ZBS
Fernández-Hevia, D. +4 more
doaj +1 more source
International Journal of Ceramic Engineering &Science, Volume 7, Issue 2, March 2025.In this paper, a method to improve the performance of varistor with the help of computational model was presented and verified by experiments. Abstract This paper investigates the impact of the microstructure of zinc oxide varistor ceramics on their electrical properties.
Xiao Lei +5 more
wiley +1 more source
Cerâmica, 2000 A durabilidade do varistor de ZnO está relacionada com suas características elétricas, microestruturais, térmicas e com o fenômeno de transporte de massa nos contornos de grão durante o processo de operação do varistor.
Pariona M. M., Pianaro S. A.
doaj
Advancements in wearable heart sounds devices for the monitoring of cardiovascular diseases
SmartMat, Volume 6, Issue 1, February 2025.This article presents the recent advancements in wearable and flexible heart sound devices, focusing on their mechanics, types of sensors, flexible sensing materials, and prospective denoising techniques. Furthermore, the potential applications of heart sounds for the monitoring of cardiovascular diseases are reviewed as well along with its future ...
Rafi u Shan Ahmad +5 more
wiley +1 more source
Pengaruh Penambahan Coo terhadap Faktor Kenon Linearan dan Struktur Mikro Varistor Zno-bi203 [PDF]
, 2003 PENGARUH PENAMBAHAN CoO TERHADAP FAKTOR KENON LINEARAN DAN STRUKTUR MIKRO VARISTOR ZnO-Bi203. Untuk mencari varistor yang efektif, studi pengaruh periambahan CoO terhadap karakteristik varistor ZnO-Bi203 telah dipelajari.
Prajitno, D. H. (Djoko) +3 more
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Open CeramicsConventional varistors rely on the formation of a Double Schottky Barrier within the intergranular region of ZnO via acceptor doping and a Bi2O3 phase. This work has been able to yield varistor-like behavior via cold sintered ZnO composites by placing 2D
Michael W. Mervosh +3 more
doaj +1 more source
High Voltage, Volume 10, Issue 1, Page 78-87, February 2025.Abstract Metal oxide varistors (MOVs) are extensively employed in DC circuit breakers (DCCBs) to suppress overvoltage, dissipate energy and build up voltage after interruption. Despite their widespread use, the performance of MOVs under short‐time, double energy absorption conditions is not well understood, posing a challenge to their application in ...
Chen Long +5 more
wiley +1 more source