Results 71 to 80 of about 169 (135)

Influence of processing parameters on microstructure and electrical properties of ZnO-based varistor ceramics

Discover Electronics
ZnO-based varistors are widely used in electrical equipment for surge protection. This research explores the influence of sintering parameters—such as sintering temperature, ramp rate and soaking time—on microstructure development and V-I characteristics
Muhammad Hassan, Muddassar Hussain, Muhammad Ali, Syed Ahmad Ali   +3 more
doaj   +1 more source

Desenvolvimento de varistores à base de SnO2 para aplicação em redes de alta tensão Development of SnO2-based varistors for high voltage application

Cerâmica, 2006
Varistores à base de SnO2 foram preparados pelo processo convencional de mistura de óxidos. As amostras foram sinterizadas a 1250 °C por 2 h. Os difratogramas obtidos por difração de raios X e as análises por microscopia eletrônica de varredura ...
M. M. Oliveira, J. H. G. Rangel, V. C. de Sousa, E. R. Leite, E. Longo, P. R. Bueno, J. A. Varela   +6 more
doaj   +1 more source

Processing parameters for ZnO-based thick film varistors obtained by screen printing

Boletín de la Sociedad Española de Cerámica y Vidrio, 2006
Thick film varistors based on the ZnO-Bi2O3-Sb2O3 system have been prepared by screen printing on dense alumina substrates. Different processing parameters like the paste viscosity, burn out and sintering cycles, green and sintered thickness, have been ...
de la Rubia, M. A., Peiteado, M., Fernández, J. F., Caballero, A. C., de Frutos, J., Holc, J., Drnovsek, S., Kuscer, D., Macek, S., Kosec, M.   +9 more
doaj  

Full-Lifecycle Deterioration Characteristics and Remaining Life Prediction of ZnO Varistors Based on PSO-SVR and iForest

Energies
To address three core deficiencies of the existing research on ZnO varistors (incomplete full-lifecycle datasets, insufficient characterization robustness due to the lack of multi-parameter complementarity, and disconnected remaining life prediction and ...
Zhiheng Zhu, Hongyang Xiao, Zhengwang Xu, Jixin Yang, Zhou Huang   +4 more
doaj   +1 more source

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

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   +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

Study on Transient Overvoltage and Surge Arrester Electrical Stresses in Offshore Wind Farms Under Multiple Lightning Strokes

Journal of Marine Science and Engineering
Lightning strikes are a major cause of wind turbine (WT) damage, with approximately 80% of cloud-to-ground lightning strikes exhibiting a multi-stroke characteristic. Therefore, studying the transient overvoltages induced by multiple lightning strokes is
Jie Zhang, Yong Wang, Jun Xiong, Junxiang Liu, Lu Zhu, Chao Huang, Jianfeng Shi, Yongxia Han   +7 more
doaj   +1 more source

Faults of ZnO Crystal in ZnO Varistor.

Journal of the Japan Society of Powder and Powder Metallurgy, 1994
Iga, Atsushi, Ito, Masahiro, Okinaka, Hideyuki   +2 more
openaire   +2 more sources

Thermodynamic study of the rich-Bi₂O₃ region of the Bi₂O₃-ZnO system

Boletín de la Sociedad Española de Cerámica y Vidrio, 2006
Precise knowledge of the Bi2O3-ZnO system is fundamental to control the functional microstructure of ZnO-based varistors. Also the potential applications of materials based on ZnO and Bi2O3 as dielectric materials in the high frequency range have renewed
de la Rubia, M. A., Serena, S., Serena, S., Serena, S., Caballero, A. C., Caballero, A., de la Rubia, M. A., Caballero, A. C., de la Rubia, M. A., Caballero, A. C., Caballero, A., Caballero, A.   +11 more
doaj  

Estudio de la región rica en Bi₂O₃ en el sistema binario ZnO-Bi₂O₃

Boletín de la Sociedad Española de Cerámica y Vidrio, 2004
Ceramic materials based in the ZnO- Bi2O3 system have their principal application as varistors. The binary system ZnO-Bi2O3 is specially relevant to the formation of the microstructure responsable of the varistor behaviour.
Caballero, A. C., Fernández, J. F., Peiteado, M., de la Rubia, M. A.   +3 more
doaj