摘要
采用传统的固相法合成了(1-x)MgTiO_3^-xCaTiO_3复合陶瓷,通过改变CaTiO_3的加入量和烧结温度的方法,采用X射线衍射光谱法(XRD)、扫描电子显微镜法(SEM)、能量散射光谱(EDS)等多种分析测试手段,研究了陶瓷的相组成和微观结构等对材料介电性能的影响,并探索介电性能的演变规律。结果表明,0.97MgTiO_3-0.03CaTiO_3复合陶瓷在1 300℃下具有较好的微波介电性能:介电常数ε_r=18.21,品质因数Q×f=76 640 GHz,谐振频率温度系数τ_f=-34.79×10^(-6)/℃。
（1 -x）MgTiO3-xCaTiO3 composite ceramics were synthesized by traditional solid-phase method and through the change of adding content of CaTiO3 and sintering temperature. With XRD, SEM, EDS and other analytical methods, the effect of the ceramic phase composition and microstructure on the dielectric properties was studied, and the evolution of the dielectric properties was explored. The results show that 0.97MgTiO3-0.03CaTiO3 composite ceramic has good dielectric properties at 1 300 ℃ ： dielectric constant ~=18.21, quality factor Q×f=76 640 GHz, temperature coefficient of resonant frequency τf=-34.79×10^-6/℃.
出处
《电源技术》
CAS
CSCD
北大核心
2016年第7期1487-1490,共4页
Chinese Journal of Power Sources
基金
河南省重点科技攻关项目(142102310255)
关键词
计算机
介电常数
物相
微观组织
computer
dielectric constant
phase
microstructure
