Results 61 to 70 of about 10,701 (258)
The effect of Sm2O3 on the sintering and grain growth behaviors of SnO2-based ceramics [PDF]
, 2019 The effect of samarium oxide was examined on the sintering, microstructure, and grain growth behaviors of (Co, Nb)-doped SnO2-based ceramics prepared by co-precipitation method.
Bastami, Hajieh +3 more
core +1 more source
Detection mechanism in highly sensitive ZnO nanowires network gas sensors
, 2019 Metal-oxide nanowires are showing a great interest in the domain of gas sensing due to their large response even at a low temperature, enabling low-power gas sensors.
Caicedo, Nohora +4 more
core +1 more source
Transformers Magazine, 2022 Current transformers are used to monitor large currents within power grids and power stations, producing a current in the device’s secondary winding that is proportional to the current flowing in its primary winding. Varistors are used to protect current transformers by preventing an open circuit condition if the secondary is disconnected, which can ...
Galvin, Dr. Tom, Coll, Dominic
openaire +2 more sources
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 +3 more
openaire +3 more sources
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 +5 more
wiley +1 more source
High Temperature Materials and ProcessesZnO 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
Polarity engineering in polycrystalline ZnO by inversion boundaries [PDF]
, 2014 Two distinctive polarity-engineered microstructures were obtained in polycrystalline ZnO ceramics by inducing two different types of inversion boundaries (IBs) inside individual grains to examine the effect of the different polarities on the varistor ...
Jeon, Sang-Yun +6 more
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Journal of the American Ceramic Society, Volume 109, Issue 2, February 2026.The abnormal expansion associated with the simultaneous synthesis and sintering of Zn2SnO4 from ZnO and SnO2 is due to the reaction mechanism and correlated with the conversion. This phenomenon opens the way to manufacture porous ceramics without the addition of pore generators, simplifying the process, and especially the thermal treatment.
María José Orts +3 more
wiley +1 more source
International Journal of Ceramic Engineering &Science, Volume 8, Issue 1, January 2026.ABSTRACT When the surge arrester is subjected to the working voltage for an extended period, it undergoes alternating current (AC) aging, which degrades the arrester's parameters and affects the safety of the power grid. Ni2O3 is an important additive in the ZnO varistor formulation, and its doping ratio significantly influences the performance of the ...
Lei Wang +4 more
wiley +1 more source
Two basic ways to realise DC circuit breakers
The Journal of Engineering, 2019 As a key element of the DC grid, the technology of DC circuit breakers (DCCBs) still have difficulty to be widely used due to its large cost and volume. This paper studies the basic principle and its realisation methods for DCCBs.
Zheng Xu +3 more
doaj +1 more source