摘要
以目前最常用的LTCC材料为基础,选择Al2O3为片式熔断器基体材料。系统研究在不同烧结温度下的Al2O3-Bi2O3陶瓷基体,通过X射线衍射和扫描电镜分析了不同温度下样品的相组成及密度变化,指出形成这种相结构的可能影响因素;测试了不同频率下样品的介电性能。结果表明,Bi2O3的掺杂可以提高Al2O3陶瓷的烧结活性,进而大大降低了陶瓷的烧结温度,密度在900℃达到最大值3.7g/cm3,陶瓷样品的主晶相为-αAl2O3,没有杂相存在,且断口形貌分布均匀没有明显的气孔存在,同时总结出了介电常数和介质损耗的变化规律。
In this paper, Al2O3-Bi2 O3 was choosed as chip fuse matrix material which based on the most commonly used LTCC materials. Composition and density of Al2O3-Bi2O3 ceramics samples in different sintering temperature was studied by X-ray diffraction and scanning electron microscopy, and analysed factors that may affect the formation of this composition; dielectric properties of samples under different frequency was measured. The results show that the mixture of Bi2O3 in Al2O3 ceramics can improve the sintering activity of Al2O3 ceramics, and thus greatly reduced the ceramic sintering temperature,it is concluded that material＇s density reaches maximum 3.7g/cm^3 in the 900℃ and its main crystalline phase is α-Al2O3 without miscellaneous phase distribution. Its distribution of fracture morphology is uniform without the existence of apparent stomatal, changes of the dielectric constant and dielectric loss was studied of in the law.
出处
《功能材料》
EI
CAS
CSCD
北大核心
2009年第8期1302-1304,1308,共4页
Journal of Functional Materials
基金
陕西省教育厅基金资助项目(07JK199)
陕西省科技厅自然基金资助项目(SJ08-ZT04)
关键词
低温烧结
显微结构
性能测试
介电性能
low-temperature sintering
mierostructure
test performance
dielectric properties
