低温烧结BaO-Sm2O3-TiO2系微波介质陶瓷材料的研究

Study on BaO-Sm2O3-TiO2 system microwave dielectric ceramics sintered at low-temperature

利用传统的固相法制备BaO-Sm2O3-TiO2系陶瓷。通过复合添加氧化物ZnO、CuO和玻璃料Bi2O3-B2O3-ZnO-SiO2（BBZS），系统的烧结温度降至900℃。研究了玻璃料的添加量对介电性能的影响。按BaSm2Ti4O12＋1％（质量分数）ZnO＋1％（质量分数）CuO＋x％（质量分数）BBZS（0＜x≤30）配方，当x=25，预烧温度为1100℃和烧结温度为900℃时，有以下的微波特性：εr=60．51，Qf=2256GHz，τf=15．02×10^-6/℃，该陶瓷材料有望与纯Ag电极共烧，应用到LTCC领域。

BaO-Sm2O3-TiO2 microwave dielectric ceramics were prepared by traditional solid sate reaction technique. By adding a proper amount of ZnO, CuO and BiEOa-BEOa-ZnO-SiOE（BBZS） glass, the sintering temperature of the system was successfully lowed to 900℃ .The effect of the amount of the glass on the dielectric properties was investigated. The composition is BaSm2Ti4O12＋1 wt% ZnO＋ lwt%CuO＋xwt% BBZS（0〈x≤30）. The ceramic of BaSm2Ti4O12- lwt%ZnO＋ 1wt%CuO＋25wt%BBZS calcined at 1100℃ and sintered at 900℃ has the following microwave characteristics： εr= 60.51, Qf= 2256GHz, Tf = 15.02 × 10^-6/℃. the ceramics is promised sinterd with Ag electrode and＇ is a promising candidate material for LTCC applications.