低温烧结Mg4Nb2O9微波介质陶瓷

被引：0

作者：

刘长菊

苏未安

机构：

[1] 江西理工大学理学院

来源：

硅酸盐通报 | 2015年 / 34卷 / 03期

关键词：

微波介质陶瓷; 低温烧结Mg4Nb2O9; 刚玉型晶体结构; 助熔剂V2O5;

D O I：

10.16552/j.cnki.issn1001-1625.2015.03.024

中图分类号：

TQ174.1 [基础理论];

学科分类号：

摘要：

研究了V2O5对Mg4Nb2O9陶瓷的烧结温度、相结构和微波介电性能的影响。结果表明,添加1%8%的V2O5,能使该陶瓷的烧结温度降低到1000～1050℃而对其微波介电性能的影响很小,材料的主晶相为有序型刚玉结构的Mg4Nb2O9,存在Mg4Nb2O6和Mg5Nb4O15杂相而没有检测到V2O5的存在。陶瓷的密度对微波介电性能起着决定性作用,介电常数εr与密度成线性关系（在99.99%的置信限内,其相关系数为0.98252）,Q·f值与密度的关系较复杂。添加1%的V2O5,将Mg4Nb2O9陶瓷的烧结温度降低到了1050℃,得到了εr=12.72,Q·f=151040GHz的优异性能。

引用

页码：782 / 787

页数：6

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