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J. Korean Ceram. Soc. > Volume 44(5); 2007 > Article
Journal of the Korean Ceramic Society 2007;44(5): 173.
doi: https://doi.org/10.4191/kcers.2007.44.5.173
CaZr(BO3)2 세라믹스의 마이크로웨이브 유전특성
남명화, 김효태1, 김종희1, 남산
고려대학교 재료공학과
1요업기술원 융복합기술본부
Microwave Dielectric Properties of CaZr(BO3)2 Ceramics
Myung-Hwa Nam, Hyo-Tae Kim1, Jong-Hee Kim1, Sahn Nahm
Department of Materials Science and Engineering, Korea University
1Korea Institute of Ceramic Engineering and Technology
The microstructure and microwave dielectric properties of dolomite type borates, $CaZr(BO_3)_2$ ceramics prepared by conventional mixed oxide method were explored. The sintering temperature of $CaZr(BO_3)_2$ ceramics could be reduced from $1150^{circ}C;to;925^{circ}C$ with little amount of sintering additives. Microwave dielectric properties of 3 wt% $Bi_2O_3-CuO$ added $CaZr(BO_3)_2$ ceramics sintered at $925^{circ}C$ were $K{approx}10.4,;Q{times}f{approx}80,000GHz;and;TCF{approx}+2ppm/^{circ}C$. Thus obtained LTCC tape was co-fired with Ag paste for compatibility test and revealed no sign of Ag reaction with the ceramics. Therefore, $CaZr(BO_3)_2$ ceramics is considered as a possible candidate material for low temperature co-fired multilayer devices.
Key words: $CaZr(BO_3)_2$, LTCC, Microwave dielectric properties, Co-fire, Compatibility
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