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J. Korean Ceram. Soc. > Volume 41(8); 2004 > Article
Journal of the Korean Ceramic Society 2004;41(8): 599.
doi: https://doi.org/10.4191/kcers.2004.41.8.599
저온동시소성(LTCC)을 위한 결정화 유리(La2O3-B2O3-TiO2계)와 BaNd2Ti5O14 세라믹을 이용한 마이크로파 유전체 특성
황성진, 김유진1, 김형순
순천대학교 재료·금속공학과
1순천대학교 재료·금속공학
Microwave Dielectric Properties of La2O3-B2O3-TiO2 Glass-Ceramic and BaNd2Ti5O14Ceramic System for LTCC Application
The LTCCs (Low-Temperature Co-fired Ceramics) are very important for electronic industry to build smaller RF modules and to fulfill the necessity for miniaturization of devices in wireless communication industry. The dielectric materials with sintering temperature $T_{sint}$<90$0^{circ}C$ are required. In this study, BaO-N $d_2$ $O_3$-Ti $O_2$ (BNT : 20∼40 wt%) for ceramic materials and L $a_2$ $O_3$- $B_2$ $O_3$-Ti $O_2$ (LBT : 80∼60 wt%) for crystallizable glasses were used. The glass/ceramic composites were investigated for sintering behavior, phase evaluation, densities, interface reaction and microwave dielectric properties. It was found that the addition LBT glass frist significantly lowered the sintering temperature to below 90$0^{circ}C$ and the densification with increasing addition LBT glass frist developed rapidly which was meant to be namely 90% of relative density. The sintered bodies ekhibited applicable dielectric properties, namely 15 for $varepsilon$$_{r}$,, 10000 GHz for Q* $f_{0}$. The results suggest that the composites have good potential as a new candidate for LTCC materials.
Key words: LTCC (Low Temperature Co-fired Ceramics), Crystallized glass, Microwave dielectric properties
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