摘要
研究了（Ｂａ０．５Ｐｂ０．５）Ｏ·Ｌａ２Ｏ３·４ＴｉＯ２－（Ｚｒ０．８Ｓｎ０．２）ＴｉＯ４复合系统的微波介电性能、烧结性能和微观结构，发现复合系统由（ＢａＰｂ）６－ｘＬａ８＋２ｘ／３Ｔｉ１８Ｏ５４，Ｌａ４Ｔｉ９Ｏ２４和（Ｚｒ０．８Ｓｎ０．２）ＴｉＯ４３相组成，而（Ｂａ０．５Ｐｂ０．５）Ｏ·Ｌａ２Ｏ３·４ＴｉＯ２除了（ＢａＰｂ）６－ｘＬａ８＋２ｘ／３Ｔｉ１８Ｏ５４和Ｌａ４Ｔｉ９Ｏ２４外还有一未知相，（Ｚｒ０．８Ｓｎ０．２）ＴｉＯ４是单一晶相．复合后，系统的烧结温度比原两系统降低了．复合系统的微波介电常数、频率温度系数、Ｑ因子主要与其中的相组成有关．结果表明未知相很可能具有高介电常数、低频率温度系数、高Ｑ因子．对微波介电性能的测量值和由复合关系导出的计算值进行了比较．
Microwave characteristics of the (Ba0.5Pb0.5)OLa2O34TiO2-(Zr0.8Sn0.2)TiO4 system including its microstructure, sinterability and densification were investigated. It is found that the composite system is composed of three phases:(BaPb)6-xLa8+2x/3Ti18O54,La4Ti9O24 and (Zr0.8Sn0.2)TiO4,but there is an unknown phase besides (BaPb)6-xLa8+2x/3Ti18O54 and La4Ti9O24 in the final composition (Ba0.5Pb0.5)OLa2O34TiO2. The dielectric properties were compared with the calculated values deduced from the mixing relations of the two components. The sinterability is also discussed.
出处
《硅酸盐学报》
EI
CAS
CSCD
北大核心
1999年第3期287-292,共6页
Journal of The Chinese Ceramic Society
关键词
微波陶瓷
介电常数
烧结
性能
陶瓷
microwave ceramics
dielectric constant
temperature coefficient of resonant frequency
Q-quality
sinterability
