B-Zn复合掺杂的LNT微波介质陶瓷的低温烧结  

Low Temperature Sintering of Li_(0.925)Nb_(0.375)Ti_(0.8)O_3 Microwave Dielectric Ceramics Co-doped with B_2O_3 and ZnO

作　　者：喻佑华[1] 尹雪帆[1] 周川钧[1] 艾凡荣[1] 丁银忠[1] 

机构地区：[1]景德镇陶瓷学院材料科学与工程学院,江西景德镇333001

出　　处：《电子元件与材料》2006年第12期37-40,共4页Electronic Components And Materials

基　　金：教育部留学回国人员科研启动基金资助项目(200555)

摘　　要：研究了烧结助剂B2O3、ZnO对Li0.925Nb0.375Ti0.8O3(LNT)陶瓷烧结特性及介电性能的影响。结果表明:B2O3-ZnO复合掺杂能有效降低烧结温度至900℃。ZnO的添加调节了LNT陶瓷正的频率温度系数,质量分数为1%的B2O3和4%的ZnO是最佳添加量,可得到εr为59.5,Q·f为7840GHz,τf为0×10–6℃–1的微波介质陶瓷材料。The microwave dielectric properties and sintering performances of Li0.925Nb0.375Ti0.8O3 ceramics with B2O3 and ZnO additions were investigated. The results indicate that ZnO and B2O3 compound addition could lower the sintering temperature to 900℃. Addition of ZnO reduce the temperature coefficient of frequency to negative, The optimal addition is found to be 1%B2O3 and 4 %ZnO when sintered at 900 ℃ for 2 h, the microwave dielectric materials thus obtained have the dielectric properties ： εr =59.5, Q ·f=7 840 GHz,τf=0×10^-6℃^-1

关 键 词：电子技术 微波介质陶瓷 Li2O-Nb2O5-TiO2体系 低温烧结 烧结助剂 

分 类 号：TM28[一般工业技术—材料科学与工程]