Results 31 to 40 of about 215,655 (219)

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, Kelly, John M., Ramesh, Raghavendra, McCormack, Declan   +3 more
openaire   +3 more sources

Ultra‐Rapid Blacklight Sintering for ZnO‐Based Varistors With Optimized Functional Properties

Journal of the American Ceramic Society, Volume 109, Issue 3, March 2026.
ABSTRACT The increasing demand for energy‐efficient optoelectronic systems has intensified interest in high‐performance ceramic varistors, which are critical components in surge protection applications. In this study, ZnO‐based varistors were fabricated using a novel blacklight sintering (BLS) technique, which employs high‐powered blue light, and were ...
Ahmad Sayyadi‐Shahraki, Michael Scherer, Lukas Porz, Mohammad Maleki Shahraki, Till Frömling   +4 more
wiley   +1 more source

Study on temperature rise prediction of ZnO varistors under multiple lightning strikes based on BP neural network and microscopic

High Temperature Materials and Processes
ZnO varistors are widely used in the field of lightning protection. After being struck by lightning, ZnO varistors absorb heat, which can lead to temperature rise and even damage, posing a serious safety threat to electrical safety.
Li Chunying, Zhang Chunlong, Lv Qing
doaj   +1 more source

Microstructural Characterization of ZnO Varistors.

Journal of the Japan Society of Powder and Powder Metallurgy, 1995
Two kinds of commercial ZnO system varistors were investigated with relevance to their microstructures. Particularly, face-to-face fracture surfaces were characterized in terms of secondary electron image and backscatterd electron image to clarify the existence of precipitates at the grain-to-grain interface.
Takeda, Shunji, Koumoto, Kunihito, Yanagida, Hiroaki   +2 more
openaire   +2 more sources

Grain Boundary Space Charge Engineering of Solid Oxide Electrolytes: Model Thin Film Study

Advanced Functional Materials, Volume 36, Issue 14, 16 February 2026.
This study demonstrates unprecedented control of grain boundary electrical properties in solid electrolytes. Selective diffusion of cations through grain boundaries in thin films enables 12 orders of magnitude variation in ionic resistance, proving that systematic chemical modification of grain boundary electrical properties is feasible.
Thomas Defferriere, Yong Beom Kim, Colin Gilgenbach, James M. LeBeau, WooChul Jung, Harry L. Tuller   +5 more
wiley   +1 more source

Surface Flashover in 50 Years: III. Extreme Environments and Industrial Challenges

High Voltage, Volume 11, Issue 1, Page 100-142, February 2026.
ABSTRACT Modern high‐voltage electrical equipment operates in complex environments where surface conditions are subjected to multifaceted influences from electric fields, thermal gradients, contaminants, irradiation and other extreme environmental factors.
Zhen Li, Heng Zhang, He Gao, Ji Liu, Yoshimichi Ohki, George Chen, Shengtao Li   +6 more
wiley   +1 more source

Influence of Sintering Temperature and ZrO₂ Dopants on the Microstructure and Electrical Properties of Zinc Oxide Varistors

IEEE Access, 2019
This paper investigated the effects of sintering temperature on the microstructure and electrical properties of ZrO2-doped zinc oxide (ZnO) varistor ceramics. The results show that, the additive ZrO2 exists as independent second phase between ZnO grains,
Pengkang Xie, Jianping Hu
doaj   +1 more source

Simulation‐Based Material Design for HVDC Cable Accessories

High Voltage, Volume 11, Issue 1, Page 25-36, February 2026.
ABSTRACT The worldwide increasing demand for electricity, coupled with the need for more reliable infrastructures and more interconnected networks, has put forward high voltage direct current (HVDC) technologies for energy transmissions. Questions still arise as regards synthetic insulation for cable systems and accessories, as it remains one of the ...
Thi Thu Nga Vu, Gilbert Teyssèdre, Séverine Le Roy   +2 more
wiley   +1 more source

Technical Progress, Challenges and Prospects of HVDC Cable Accessories: A Review With Chinese Practice Insights

High Voltage, Volume 11, Issue 1, Page 1-24, February 2026.
ABSTRACT With the development of deep‐sea wind power and large‐scale onshore clean energy, the global demand for higher voltage level DC cable power transmission technology has become increasingly urgent. This paper systematically reviews the technical advancements in high voltage direct current (HVDC) cable accessories, addressing design challenges of
Zongxi Liu, Benhong Ouyang, Kaiwen Huang, Yuli Wang, Jiankang Zhao, Peng Zhao   +5 more
wiley   +1 more source

The Role of Polypyrrole in Electrical Properties of ZnO-Polymer Composite Varistors [PDF]

Iranian Journal of Chemistry & Chemical Engineering, 2017
Composite films on the base of ZnO with different weight percentages of polypyrrole have been prepared using the hot pressing method and their current-voltage characteristics have been studied. Results show that the films have nonlinear varistor behavior
Nasim Asaadi, Mojtaba Parhizkar, Sajedeh Mohammadi Aref, Hassan Bidadi   +3 more
doaj