Results 81 to 90 of about 135,374 (222)

Study of BaTiO3-doped Bi2O3/ZnO varistor microstructure and its electrical characteristics [PDF]

This study presents the characterization and optimization of BaTiO3-doped ZnO-based varistors for electrical and electronic applications. The varistors were prepared using a conventional ceramic procedure and were sintered at a temperature of 1,000 °C ...
Malaoui, Yousra, Kharchouche, Faiçal, Bouketir, Omrane   +2 more
core   +1 more source

Using percolation to design ZnO composites with hBN modified grain boundaries to obtain varistor-like behavior

Open Ceramics
Conventional 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, Sevag Momjian, Javier Mena-Garcia, Clive A. Randall   +3 more
doaj   +1 more source

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   +1 more source

Calculation model by Voronoi network and verification of zinc oxide varistor considering conduction mechanism

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, Xin Ning, Peng Liu, Pengfei Meng, Yue Yin, Jingke Guo   +5 more
wiley   +1 more source

Analysis of a.c. Characteristics in ZnO-Bi2O3-Mn3O4 Varistor Using Dielectric Functions

, 2010
: In this study, we have investigated the effects of Mn dopant on the bulk trap levels and grain boundary characteristics of Bi2O3-based ZnO (ZB) varistor using admittance spectroscopy and ...
Hyo-soon Shin, Youn-woo Hong, Dong-hun Yeo, J. Kieeme, Jin-ho Kim   +4 more
core   +1 more source

Microstructure–property relationship in textured ZnO-based varistors

Acta Materialia, 2010
The relationship between microstructure texturing and electrical characteristics of a ZnO-based varistor system was investigated in comparison with a varistor system having the same chemical composition but conventional microstructure. Highly textured ZnO-based varistors were produced via the templated grain growth (TGG) technique.
Ozer, I. Ozguer, Suvaci, Ender, Bernik, Slavko   +2 more
openaire   +2 more sources

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, Muhammad Shehzad Khan, Mohamed Elhousseini Hilal, Bangul Khan, Yuanting Zhang, Bee Luan Khoo   +5 more
wiley   +1 more source

ZnO-Bi2O3-based varistor ceramics prepared by direct high-energy ball milling of the dopants

, 2011
The microstructure and electrical properties of ZnO-Bi2O3-based varistor ceramics prepared by direct high-energy ball milling of the dopants were studied.
Ye, Xiao, Wang, Biao, Xu, D.(frank@shu.edu.cn), Xu, Dong, Li, Mingshuang   +4 more
core  

IMPACT OF RARE EARTH OXIDES ON THE STRUCTURE AND ELECTRICAL PROPERTIES OF ZnO-Bi2O3−BASED VARISTOR CERAMICS: A COMPARATIVE ANALYSIS OF Y2O3 AND CeO2

Tạp chí Khoa học
Zinc oxide (ZnO)-based varistor ceramics, incorporating varying amounts of Y2O3/CeO2, were fabricated through a twostep solid-state reaction method involving pre-calcination and subsequent sintering processes.
Nguyen Trung Huy, Nguyen Van Trang, Cao Thi Hong, Nguyen Thi Xuyen, Vo Thi Kieu Anh, Nguyen Quang Duong, Nguyen Tuan Anh, Le Dang Quang, Do Quang Tham*
doaj   +1 more source

Simultaneously Enhanced Potential Gradient and Nonlinearity of ZnO Varistor Ceramics by MnO Doping with Nano-Sized ZnO Powders. [PDF]

Materials (Basel), 2021
Wang Y, Hou Z, Li J, Wu K, Song J, Chen R, Li K, Hao L, Xu C.   +8 more
europepmc   +1 more source