(Ba_(1-y)Sr_y)_(6-3x)Sm_(8+2x)Ti_(18)O_(54)微波介质陶瓷的结构及性能  

Structure and Dielectric Properties of(Ba_(1-y)Sr_y)_(6-3x)Sm_(8+2x)Ti_(18)O_(54) Microwave Dielectric Ceramics

作　　者：司敏杰[1] 李谦[1] 黄金亮[1] 

机构地区：[1]河南科技大学材料科学与工程学院,河南洛阳471003

出　　处：《机械工程材料》2006年第1期46-49,共4页Materials For Mechanical Engineering

基　　金：河南省高校创新人才基金资助项目(2001-213)

摘　　要：研究了(Ba1-ySry)6-3xSm8+2xTi18O54(x=2/3,0.0≤y≤0.5)微波介质陶瓷的晶体结构和性能。结果表明:用锶取代钡形成了钨青铜结构的固溶体相,随着锶取代量的增加,晶格常数线性降低;同时,介电常数增大,在y=0.5时获得最大值(80.95);介电损耗在y=0.3达到了最低值(0.000 16)。频率温度系数随着锶取代量的增加由负变正。The microwave dielectric properties and microstructure of （Ba1-ySry）6-3xSm8＋2xTi18O54（x= 2/3, 0. 0≤y≤0. 5）ceramics were investigated. The solid solutions in which Sr ions substituted for Ba ions were formed. With the increase of Sr content, the lattice parameter descended linearly. The dielectric constant of the （Ba1-ySry）6-3xSm8＋2xTi18O54 ceramics ascended to 80. 95 at y=0. 5, and the dielectric loss got to 0. 000 16 at y=0. 3, and temperature coefficient of frequency changed from negative to positive.

关 键 词：微波介质陶瓷 ((Ba1-ySry)6-3xSm8+2xTi18O54固溶体 介电性能 

分 类 号：TQ174.75[化学工程—陶瓷工业]