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http://dx.doi.org/10.4313/TEEM.2007.8.3.105

Electrical Properties of ZPCCT-based Varistor Ceramics  

Nahm, Choon-Woo (Department of Electrical Engineering, Dongeui University)
Publication Information
Transactions on Electrical and Electronic Materials / v.8, no.3, 2007 , pp. 105-109 More about this Journal
Abstract
The microstructure and electrical properties of Zn-Pr-Co-Cr-Tb oxide-based varistors were investigated for different $Tb_4O_7$ amounts. As the $Tb_4O_7$ amount increased, the average grain size decreased from 7.7 to $4.8{\mu}m$ and the sintered density increased from 5.73 to $5.84g/cm^3$. As the $Tb_4O_7$ amount increased, the varistor voltage increased from 280.9 to 715.8V/mm and the nonlinear coefficient increased from 26.4 to 44.4. It is assumed that these varistors can be applied for high power with compact size.
Keywords
Microstructure; $Tb_4O_7$; Electrical properties; Varistors;
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Times Cited By KSCI : 1  (Citation Analysis)
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