저온동시소성 유전체 재료용 인산염계 유리-$BaO-Nd_{2}O_3-TiO_2$계 세라믹 복합체의 특성 = Properties of Phosphate Glasses - $BaO-Nd_{2}O_3-TiO_2$ Ceramic Composites for Using Dielectric Materials Having Low Temperature Cofired Ceramic(LTCC)

국문 초록 (Abstract)

본 연구에서는 마이크로파용 유전재료로서 널리 사용되고 있는 BNT($BaO-Nd_{2}O_3-TiO_2$)계 세라믹스를 기본조성으로 하고, 저융점의 phoshpate계 유리 프릿의 첨가를 통해 LTCC(Low Temperature Cofired Ceramic)에 적용 가능한 유전율을 가진 조성을 개발 하고자 $70P_{2}O_5-5B_{2}O_3-(25-x)BaO-xNa_{2}O$ 유리를 제조 및 특성을 평가하였다 또한, BNT계 세라믹스에 글래스 프릿을 $5 - 15\;wt\%$ 범위에서 첨가하고, 800 - $950^{\circ}C$의 온도범위에서 소결하여 제조된 유리-세라믹 복합체의 소결수축율은 글래스 프릿의 함량이 증가함에 따라 증가하였으며, 유전율은 10-40의 범위를 보였다.

다국어 초록 (Multilingual Abstract)

In this study, BNT($BaO-Nd_{2}O_3-TiO_2$) and $70P_{2}O_5-5B_{2}O_3-(25-x)BaO-xNa_{2}O$ glass-ceramic composites were fabricated and investigated in order to apply for low temperature cofired ceramic. The prepared BNT based glass-ceramic composites were sintered at $800{\sim}950^{\circ}C$ with the glass fit contents ranging from 10 to $15\;wt\%$. The properties such as sintering and dielectric property were investigated in the ceramic compositions according to the phosphate glass frit. The dielectric constant was varied between 10 to 40 and shrinkage rate was increased according to increasing glass frit.

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