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    • 64. 发明授权
    • 마이크로파 및 밀리미터파용 유전체 세라믹 조성물 및 그의제조방법
    • 마이크로파및밀리미터파용유전체세라믹조성물및그의제조방
    • KR100639920B1
    • 2006-11-01
    • KR1020050109804
    • 2005-11-16
    • 한국전자통신연구원
    • 김동영이홍열전동석이상석조경익
    • H01B3/10H01B3/12
    • Provided are a dielectric ceramic composition for microwaves and millimeter waves which can be sintered at a wider range of temperature and has a high Q*f value, and its preparation method. The dielectric ceramic composition comprises cordierite comprising MgO, Al2O3 and SiO2 in a ratio of 2:2:5 by mol, wherein some of Al2O3 or SiO2 is substituted with any one selected from the group consisting of ZnO, TiO2 and GeO2 by 0.1 mol. The method comprises the steps of mixing a main component comprising MgO, Al2O3 and SiO2 and an accessory component comprising any one selected from the group consisting of ZnO, TiO2 and GeO2; calcining the mixture at a high temperature to prepare a cordierite crystal; and sintering the obtained powder at a temperature of 1,400-1,445 deg.C.
    • 本发明提供一种可以在更宽的温度范围内烧结并具有高Q * f值的用于微波和毫米波的介电陶瓷组合物及其制备方法。 所述介电陶瓷组合物包含以2:2:5的摩尔比包含MgO,Al 2 O 3和SiO 2的堇青石,其中一些Al 2 O 3或SiO 2被选自由ZnO,TiO 2和GeO 2中的任一种取代0.1摩尔。 该方法包括以下步骤:混合包含MgO,Al 2 O 3和SiO 2的主要组分和包含选自ZnO,TiO 2和GeO 2中的任何一种的辅助组分; 在高温下煅烧混合物以制备堇青石晶体; 并在1400-1445℃的温度下烧结得到的粉末。