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BiNbO4微波介质陶瓷的研究

姚尧; 赵梅瑜; 王依琳; 吴文骏; 金行运   

  1. 中国科学院上海硅酸盐研究所; 上海 200050
  • 收稿日期:1997-05-12 修回日期:1997-05-29 出版日期:1998-04-20 网络出版日期:1998-04-20

BiNbO4 Dielectric Ceramics at Microwave Frequencies

YAO Yao; ZHAO Mei-Yu; WANG Yi-Lin; WU Wen-Jun; JIN Xing-Yun   

  1. Shanghai Institute of Ceramics; Chinese Academy of Sciences Shanghai 200050 China
  • Received:1997-05-12 Revised:1997-05-29 Published:1998-04-20 Online:1998-04-20

摘要: 本文研制V2O5和V2O5-CuO复合添加的BiNbO4微波介质陶瓷.实验结果表明:CuO-V2O5复合添加,比单独加入V2O5能大幅度地降低BiNbO4陶瓷的烧结温度,有效地抑制晶粒异常生长,促使瓷体晶粒尺寸较为均匀和致密,降低高频和微波频率的tanδ值.CuO-V2O5复合添加BiNbO4介质陶瓷,在3GHz频率下,εr=44;Q=2000

关键词: BiNbO4介质陶瓷, 二步法合成工艺, 低温烧结

Abstract: V2O5 doping and complex V2O5-CuO doping BiNBO4 ceramics were studied. The experimental results indicate that complex doping is more efficient in decreasing the sintering temperature,preventing exaggerated grain growth and improving the dielectric loss of the BiNbO4 -based ceramics. This complex doping BiNbO4 has more homogeneous grain size and higher density than that of V2O5-doped one, and their microwave properties are εr=44, Q=2000(3MHz).

Key words: BiNbO4 dielectric ceramics, two-steps synthetic processing, low-firing

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