Results 91 to 100 of about 1,546 (174)

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  

Effect of MnO2${ ext{MnO}}_{2}$ doping on AC aging characteristics of varistor in arrester

International Journal of Ceramic Engineering & Science
As the core component of lightning arrester, the performance of ZnO varistor directly affects the protection level of lightning arrester. Under the action of long‐term AC voltage, the varistors are prone to AC aging, which leads to the deterioration of ...
Zhengzheng Fu, Zongxi Zhang, Songhai Fan, Tao Cui, Donghui Luo, Yiping Jiang, Pengfei Meng, Jingke Guo, Yue Yin   +8 more
doaj   +1 more source

Preparation of ZnO-based varistors by the sol-gel technique

, 1994
ZnO-based varistors consisting of 96 mol% ZnO and 4 mol% additive oxides (Bi2O3, Sb2O3, NiO, Co2O3, MnO and Cr2O3) have been prepared. Four different procedures have been applied to obtain the starting powder mixture.
Österlund, Ragnar, Ekstrand, Åsa,, Merkelbach, Paul, Westin, Gunnar, Nygren, Mats   +4 more
core   +1 more source

Influence of Y–Bi–Co oxide doping on electrical performance of ZnO varistors based on simulation analysis

International Journal of Ceramic Engineering & Science
ZnO 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, Zongxi Zhang, Songhai Fan, Tao Cui, Donghui Luo, Yue Yin, Pengfei Meng, Jingke Guo   +7 more
doaj   +1 more source

Impedance Spectroscopic Study of Zinc Oxide Varistors

, 1991
Polycrystalline zinc oxide containing oxides of bismuth, cobalt, manganese and antimony is found to exhibit highly non-ohmic I–V characteristic arising due to the presence of schottky barriers at the grain boundaries.
Q. Banerjee, A. Sadhu, M. J. Patni, T. R. Rananohan   +3 more
core   +1 more source

Zinc oxide varistors made from powders prepared by wet chemical route

, 2001
Powders used to produce zinc oxide ceramic varistors were prepared, by wet chemical route. SEM and XRD were used to characterize the powder properties and the microstructure of the varistors.
Ji, Y. Z., Yuan, F. L., Huang, S. L., Li, J. L.   +3 more
core  

Study on the Failure Causes and Improvement Measures of Arresters in 10 kV Distribution Transformer Areas

Energies
In recent years, arresters in 10 kV distribution transformer areas of the Guangdong power grid have exhibited a rising trend of premature failures, posing a serious threat to distribution network reliability.
Taishan Hu, Yuanzhi Wu, Zhiming Liao, Gang Liu, Shangmao Hu, Yongxia Han, Lu Qu, Licheng Li   +7 more
doaj   +1 more source

Quantitative Icts Measurement of Interface States at Grain Boundaries in ZnO Varistors

, 1997
Isothermal capacitance transient spectroscopy(ICTS) measurement is applied to ZnO:Pr varistors. A simple peak corresponding to the interface states at grain boundaries was obtained and the energy level of the interface states revealed to be monoenergetic
A. Tanaka, K. Mukae
core   +1 more source

Optimization of technological processes in the manufacturability of varistors based on recycled ZnO product, with emphasis on environmental sustainability

Heliyon
The main objective described in this paper is the optimization of technological parameters in the production of varistors based on recycled zinc oxide (ZnO).
Pavol Liptai, Šimon Nagy, Bystrík Dolník, Miloš Matvija, Jana Pirošková   +4 more
doaj   +1 more source

Taguchi‐optimized spark plasma‐sintered nanostructured ZnO varistors with exceptional nonlinearity and energy‐absorption performance

Results in Materials
This study presents a comprehensive investigation of advanced nanostructured ZnO-based varistors fabricated through Spark Plasma Sintering (SPS) and optimized via the Taguchi method.
Arash Vaghef-Koodehi
doaj   +1 more source