0.4CaTiO_3-0.6(Li_(1/2)Nd_(1/2))TiO_3陶瓷的低温烧结及其介电性能  

LOW TEMPERATURE SINTERING AND DIELECTRIC PROPERTIES OF 0.4CaTiO_3-0.6(Li_(1/2)Nd_(1/2))TiO_3 CERAMICS

作　　者：王应[1] 黄金亮[1] 杨留栓[1] 顾永军[1] 李谦[1] 

机构地区：[1]河南科技大学材料科学与工程学院,洛阳471003

出　　处：《陶瓷学报》2010年第3期450-453,共4页Journal of Ceramics

基　　金：河南省杰出青年基金项目(编号:074100510008);河南省教育厅自然科学研究计划项目(编号:2009A430005);河南省科技发展计划项目(编号:092300410135)

摘　　要：研究了烧结助剂2ZnO-B2O3玻璃(ZB)对0.4CaTiO3-0.6(Li1/2Nd1/2)TiO(3CLNT)微波介质陶瓷的烧结特性、相组成、微观形貌及介电性能的影响。结果表明:添加少量的ZB玻璃能使CLNT陶瓷的烧结温度从1300℃降低至950℃。随着ZB玻璃添加量的增加,介电常数先增大后减小,频率温度系数先趋于零后向负值偏移,介电损耗先下降后趋于稳定。添加3wt%ZB玻璃的CLNT陶瓷在950℃烧结2h,获得了最佳的介电性能:εr=91.13,tanδ=0.0133,τf=10.5ppm/℃,满足高介多层片式微波元器件的设计要求。The Effects of 2ZnO-B2O3 glass（ZB） on sintering behavior,phase composition,micromorphology and dielectric properties of 0.4CaTiO3-0.6（Li1/2Nd1/2）TiO3（CLNT） microwave dielectric ceramics were investigated.The sintering temperature of CLNT ceramics was effectively lowered from 1300℃ to 950℃ by adding a small amount of ZB glass.With the addition of ZB glass,the dielectric constant（εr） increased first and then decreased.The temperature coefficient of resonant frequency shifted to zero and then to a negative value.The dielectric loss decreased and then to the stable.The CLNT ceramics with 3wt% ZB glass sintered at 950℃ for 2h showed the optimum dielectric properties： εr =91.13,tanδ= 0.0133,and τf =10.5 ppm/℃,which meets the requirements of the high dielectric constant materials for multilayer microwave components.

关 键 词：微波介质陶瓷 液相烧结 介电性能 

分 类 号：TQ174.75[化学工程—陶瓷工业]