Mechanism of Effect of Copper and Alkali Metal on
Properties of Varistor Ceramics
Author(s): CAO Quan-xi, JI Cong-lin, ZHOU Xiao-hua, GAO Jing-xiu
Pages: 186-188
Year: 2001 Issue: 3
Journal: PIEZOELECTRICS & ACOUSTOOPTICS
Keyword: 压敏陶瓷; 晶体结构; 铜; 碱金属;
Abstract: According to the crystal structures of ZnO and SrTiO3，the positions of copper atoms and alkali metal atoms in the ceramic materials are discussed．It is shown as experiment result that the same atoms could have different roles in different crystal structures．The mechanism that copper atoms and alkali metal atoms have effects on breakdown voltage，capacitance and effective relative pemrmittivity of varistor ceramics are researched in the paper．
Pages: 186-188
Year: 2001 Issue: 3
Journal: PIEZOELECTRICS & ACOUSTOOPTICS
Keyword: 压敏陶瓷; 晶体结构; 铜; 碱金属;
Abstract: According to the crystal structures of ZnO and SrTiO3，the positions of copper atoms and alkali metal atoms in the ceramic materials are discussed．It is shown as experiment result that the same atoms could have different roles in different crystal structures．The mechanism that copper atoms and alkali metal atoms have effects on breakdown voltage，capacitance and effective relative pemrmittivity of varistor ceramics are researched in the paper．
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