Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Various Filler Added CaO-Al2O3-SiO2 Glass Composites for LTCC Substrate Applications

LTCC 기판재료 응용을 위한 다양한 충전제 함유 CaO-Al2O3-SiO2 유리복합체 연구

  • Kim, Kwan-Soo (Department of Ceramic Engineering, Kangnung-Wonju National University) ;
  • Jang, Ho-Soon (Department of Ceramic Engineering, Kangnung-Wonju National University) ;
  • Shin, Hyun-Ho (Department of Ceramic Engineering, Kangnung-Wonju National University) ;
  • Kim, In-Tae (Cermotech Co., Ltd., Gangnung Science & Industry Park) ;
  • Kim, Shin (Cermotech Co., Ltd., Gangnung Science & Industry Park) ;
  • Han, Yong-Hyun (Cermotech Co., Ltd., Gangnung Science & Industry Park) ;
  • Yoon, Sang-Ok (Department of Ceramic Engineering, Kangnung-Wonju National University)
  • Published : 2009.05.31
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Abstract

Influences of ceramic filler types and dose on the sintering, phase evolution, and dielectric properties of ceramic/CaO-$Al_2O_3-SiO_2$ glass composites were investigated. All of the specimens were sintered at $900^{\circ}C$ for 2 h, which conditions are required by the lowtemperature co-firing ceramic (LTCC) technology. Ceramic fillers of $Al_2O_3,\;SiO_2$, kaolin, and wollastonite were used. The addition of $Al_2O_3$ filler yielded the crystalline phases of alumina and wollastonite, and the densification over 95% of the relative density was achieved up to 50 wt% addition of the filler. For the cases of the fillers of $SiO_2$, kaolin, and wollastonite, crystalline phases of quartz, mullite, and wollastonite formed, while the densification decreased monotonically with the filler addition. In overall, all the investigated fillers with 10 wt% addition resulted in a reasonable sintering (over 95 %) and low dielectric constants (less than 6), demonstrating the feasibility of the investigated composites for application to a LTCC substrate material with a low dielectric constant.

Keywords

References

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