Influence of Gd2O3 on phase, microstructure, and electrical properties of ZnO varistor ceramics

2021 ◽  
Author(s):  
Jufeng Shi ◽  
Yangyi Xu ◽  
Yunge Wei ◽  
Guifang Li
Keyword(s):  
Electrical Properties ◽  
Zno Varistor

Tailoring electrical properties of multiple dopant-based ZnO varistor by doping with yttrium, gallium, and indium

2017 ◽  
Vol 209 ◽  
pp. 413-416 ◽  
Author(s):  
Pengfei Meng ◽  
Xiao Yang ◽  
Jun Hu ◽  
Jinliang He
Keyword(s):  
Electrical Properties ◽  
Zno Varistor

Enhanced electrical properties of ZnO varistor ceramics by spark plasma sintering: Role of annealing

2020 ◽  
Vol 46 (10) ◽  
pp. 15076-15083 ◽  
Author(s):  
Jie Liang ◽  
Xuetong Zhao ◽  
Jianjie Sun ◽  
Lulu Ren ◽  
Ruijin Liao ◽  
...  
Keyword(s):  
Electrical Properties ◽  
Spark Plasma Sintering ◽  
Zno Varistor ◽  
Plasma Sintering ◽  
Spark Plasma

Stable electrical properties of ZnO varistor ceramics with multiple additives against the AC accelerated aging process

2019 ◽  
Vol 45 (8) ◽  
pp. 11105-11108 ◽  
Author(s):  
Pengfei Meng ◽  
Xiao Yang ◽  
Jinbo Wu ◽  
Qingyun Xie ◽  
Jimou He ◽  
...  
Keyword(s):  
Electrical Properties ◽  
Aging Process ◽  
Accelerated Aging ◽  
Zno Varistor

Electrical properties of ZnO varistor ceramics modified by rare earth-yttrium and gallium dopants

2018 ◽  
Vol 233 ◽  
pp. 20-23 ◽  
Author(s):  
Pengfei Meng ◽  
Jinbo Wu ◽  
Xiao Yang ◽  
Jun Hu ◽  
Jinliang He
Keyword(s):  
Rare Earth ◽  
Electrical Properties ◽  
Zno Varistor

Study on Microstructure and Electrical Properties of ZnO Varistor Ceramics

2011 ◽  
Vol 415-417 ◽  
pp. 2008-2011 ◽  
Author(s):  
Chang Qi Xia ◽  
Qi Bin Liu ◽  
Mo He
Keyword(s):  
Electrical Properties ◽  
Sintering Temperature ◽  
Spinel Phase ◽  
Voltage Gradient ◽  
X Rays ◽  
Sintering Process ◽  
Varistor Ceramic ◽  
Zno Varistor ◽  
Zno Varistors ◽  
Ceramic Sintering

To obtain ZnO varistors with high voltage gradient, ZnO varistors were fabricated by traditional ceramic sintering technique, which were sintered from 1135 to 1155 °C, the microstructure and properties of varistors were characterized by SEM, X-rays diffraction and DC parameter instrument for varistors. The experimental results show that the spinel phase Zn7Sb2O12 generated during sintering process, very thin amorphous Bi rich films are formed between the ZnO/ZnO grain boundaries, with increasement of sintering temperature, the grain size of ZnO varistor ceramic becomes bigger, the voltage gradient of varistor decreases and the density is improved. The optimized parameters are that when the sintering temperature is at 1140 °C, the voltage gradient of varistor is 301V/mm, the leakage current is 4μA and the density is 96.6%, the comprehensive electrical properties of ZnO varistors reach maximum.

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