The Nonlinear Characteristics of Different Additives Added V2O5-ZnO Varistor
Most commercial ZnO varistors containing Bi2O3 exhibit excellent varistor properties,but they have a few drawbacks due to Bi2O3 having high volatility and reactivity and higher sintering temperature.In this study,V2O5 is added as the varistor forming oxide to lower down the sintering temperature of ZnO varistors for the further developing the chip Varistor array by using the Ag as the inner electrode.It is found that the sintering temperature of V2O5-added ZnO will be lower down to about 600℃.But the addition of V2O5 has no improvement in the electrical characteristics,and they need many additives to obtain the high performance.For that,the nonlinear properties in these Varistors can be improved by incorporation of some oxide additives.Different MnOx oxides (MnO,MnO2,and Mn3O4) and CoOx oxides (CoO and Co3O4)are used as the minor oxide additives.The influences of different MnOx and CoOx oxides on the nonlinear voltage-current density (V-Ⅰ) characteristics and the nonlinear exponent (α) of V2O5-ZnO varistor will be well developed.
Varistor V2O5 CoOx MnOx
Chien-Chen Diao Shih-Feng Chien Cheng-Fu Yang Hsien-Wu Chan Ying-Chung Chen Ho-Hua Chung
Department of Electronic Engineering,Kao Yuan University,Kaohsiung,Taiwan Department of Electrical Engineering,National Sun Yat-Sen University,Kaohsiung,Taiwan;CHIPCERA TECHN Department of Chemical and Materials Engineering,National University of Kaohsiung,Kaohsiung,Taiwan Department of Electrical Engineering,National Sun Yat-Sen University,Kaohsiung,Taiwan Department of Mechanical and Automation Engineering,Kao Yuan University,Kaohsiung,Taiwan
国际会议
The Fifth China International Conference on High-Performance Ceramics (第五届先进陶瓷国际研讨会(CICC-5))
长沙
英文
493-496
2007-05-10（万方平台首次上网日期，不代表论文的发表时间）