Low-Temperature Sintering and Microwave Dielectric Properties of Ba2Ti9O20 Ceramics with CaO--B2O3--ZnO Glass Additions

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概要

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• The effect of CaO--B2O3--ZnO (CBZ) glass on the microstructures and microwave dielectric properties of Ba2Ti9O20 ceramics was investigated. With the addition of CBZ glass, the densification temperature of Ba2Ti9O20 can be effectively reduced from 1400 to 880--920 °C. It is found that the addition of CBZ glass (20--30 wt %) can significantly improve the density and dielectric properties of Ba2Ti9O20 ceramics. The dielectric properties of Ba2Ti9O20 ceramics were strongly dependent upon the amount of CBZ glass addition. A dielectric constant (\varepsilon_{\text{r}}) of 27.0, a quality factor (Q \times f) value of 13,400 GHz, and a temperature coefficient of resonant frequency (\tau_{\text{f}}) of 17.8 ppm/°C were obtained for 20 wt % CBZ glass-doped Ba2Ti9O20 ceramics sintered at 920 °C for 2 h.

• 2011-06-25

著者

• Chen Wei

  Shanghai Inst. Ceramics Chinese Acad. Sci. Shanghai Chn

• Luo Lan

  Shanghai Institute Of Ceramics Chinese Academy Of Sciences

• Hu Lili

  Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, P. R. China

• Lin Huixing

  Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai 200050, P. R. China

• Zhao Xinagyu

  Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, P. R. China

• Lin Huixing

  Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, P. R. China

• Chen Wei

  Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, P. R. China

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