添加剂对Ba_(6-3x)Sm_(8+2x)Ti_(18)O_(54)微波介电陶瓷性能的影响  

Effects of Different Additives on Properties of the Ba_(6-3x)Sm_(8+2x)Ti_(18)O_(54) Microwave Dielectric Ceramics

作　　者：张校平[1] 张其土[1] 刘良嘉[1] 

机构地区：[1]南京工业大学材料科学与工程学院,江苏南京210009

出　　处：《稀土》2006年第1期54-56,86,共4页Chinese Rare Earths

基　　金：江苏省"青蓝工程"资助项目

摘　　要：以Ba6-3x（Sm1-yBiy）8＋2xTi18O54（x=2/3）为研究对象，运用均匀设计方法确定实验配方，研究了在不同y值下，不同含量的B2O3和ZnO对该系列陶瓷性能的影响。研究结果表明，添加剂的加入使陶瓷的烧结温度降低了250℃左右，并可以得到介电常数在48～91，介电损耗在（3～9）×10^14之间的陶瓷材料。其中，当y＋0.35，B2O3为1％（质萤分数）时，陶瓷的烧结温度为1150℃，介电常数可达87．2，介电损耗为3×10^-4。在此基础上，利用XRD和SEM检测了材料的物相和断面形貌。In this study using the uniform design theory to get the prescription of ceramics, we investigated the properties of Ba6-3x（Sm1-yBiy）8＋2xTi18O54（x=2/3） ceramics with different value y and additives. The results show that the sintering temperature was lowed about 250℃, the dielectric constant of ceramics was in a range from 48 to 91 and the dielectric loss was between 3×10^-4 and 6×10^-4 with adding different additives （eg.B2O3, ZnO）. When 0.5wt% of B2O3 and 0.0wt% of ZnO ceramic powder were mixed with the Ba4 （Sm1-yBiy）9.33 Ti18O54 （y=0.30） ceramics, the derived ceramics demonstrated good properties with a low sintering temperature（T=11.50℃）, a large dielectric constant（εr＋87.2 and a low dielectric loss （tanδ = 3×10^-4）. Meanwhile, crystalline phases of the ceramics were identified by XPD. SEM study d the ceramics was also employed.

关 键 词：微波介电陶瓷 介电性能 均匀设计 

分 类 号：TM283[一般工业技术—材料科学与工程] O614.33[电气工程—电工理论与新技术]