A New System of Low Temperature Sintering ZnO–SiO2 Dielectric Ceramics
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概要
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A new ZnO–SiO2 microwave dielectric ceramic system with Li2CO3 and Bi2O3 composite additives was studied. It was difficult to acquire dense ceramics at 1380 °C without sintering aids using the ZnO–SiO2 system. With 5 wt % Li2CO3 and 4 wt % Bi2O3 composite addition, the ZnO–SiO2 system can be sintered well at approximately 900 °C. The dielectric constant of ZnO–SiO2 system decreased with increasing SiO2 content and $Q\times f$ value acquired a maximum at a certain SiO2 content. The samples of ZnO–0.6SiO2 with Li2CO3 and Bi2O3 addition sintered at 910 °C for 2 h showed excellent properties such as $\varepsilon_{\text{r}}=6.65$, $Q\times f=33{,}000$ GHz (at 11 GHz), and $\tau_{\text{f}}=-70$ ppm/°C.
- 2006-05-15
著者
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Sun Hui-Ping
College of Materials Science and Chemical Engineering, Zhejiang University, Hangzhou 310027, China
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Zou Jia-Li
College of Materials Science and Chemical Engineering, Zhejiang University, Hangzhou 310027, China
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Zhang Qi-Long
College of Materials Science and Chemical Engineering, Zhejiang University, Hangzhou 310027, China
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Yang Hui
College of Materials Science and Chemical Engineering, Zhejiang University, Hangzhou 310027, China
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Yang Hui
College of Computer, National University of Defense Technology
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- A New System of Low Temperature Sintering ZnO–SiO2 Dielectric Ceramics
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