Low-temperature Sintering and Microwave Dielectric Properties of BaTi<sub>4</sub>O<sub>9</sub>-based Ceramics

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doi:2003.40.2.172

J. Korean Ceram. Soc. > Volume 40(2); 2003 > Article

Journal of the Korean Ceramic Society 2003;40(2): 172.
doi: https://doi.org/10.4191/kcers.2003.40.2.172

BaTi₄O₉계 세라믹스의 저온소결 및 마이크로파 유전특성

최영진, 신동순, 박재환¹, 남산², 박재관¹

한국과학기술연구원 복합세라믹스연구센터, 고려대학교 재료공학과
¹한국과학기술연구원 복합기능세라믹연구센터
²고려대학교 재료공학과

Low-temperature Sintering and Microwave Dielectric Properties of BaTi₄O₉-based Ceramics

ABSTRACT

Effect of glass addition on the low-temperature sintering and microwave dielectric properties of $BaTi_4O_9$-based ceramics were studied to develop the materials for the functional substrate of low-temperature co-fired ceramics. When 10 wt% of glass was added, sufficient densification was obtained and the relative density more than 98% was reached at the sintering temperature of$875{circ}C$. The microwave dielectric properties were k=32, Q＊f=9000 GHz, ${ au}_f$=10 ppm/${circ}C$. As the amount of glass increased, phase decompositions from $BaTi_4O_9;to;BaTi_5O_{11};and;Ba_4Ti_{13}O_{30}$ was observed.

Key words: ${BaTi_4}{O_9}$, Microwave ceramics, LTCC, Borosilicate, Glass