摘要
采用传统固相反应法制备x Ca Ti O3-（1-x）La Al O3（0.55≤x≤0.69）（CTLA）陶瓷,研究CTLA陶瓷的物相,微观结构及微波介电性能.结果表明,烧结温度在1 400℃时,陶瓷的微波性能最佳,介电常数在35~47之间,Q×f≥35 000 GHz.随着Ca Ti O3含量的增大,频率温度系数趋零,当x=0.67时,陶瓷具有最佳的微波性能：εr=45,Q×f=36 684 GHz,τf=6.02×10-6/℃.
xCaTiO3-（1-x） LaA103 ceramics （CTLA, 0.55≤x≤0.69）were prepared by traditional solid state process. The crystal structure, microstructure and microwave dielectric properties of the prepared CTLA ceramics were investigated. The results showed that the CTLA ceramics sintered at 1 400 ℃ exhibited excellent microwave properties： the dielectric permittivity within the range from 35 to 47, Q xf≥35 000 GHz. The temperature coefficient of resonance frequency being near to zero with the increase of LaA103 molar concentration.At x=0.67 the optimal microwave properties were obtained ：εr=45,Qxf=-36 684 GHz,rr=6.02x 10-6/℃.
出处
《湖北大学学报（自然科学版）》
CAS
2015年第3期262-265,共4页
Journal of Hubei University：Natural Science
基金
国家自然科学基金(11174071)资助
关键词
CTLA陶瓷
物相
微波介电性能
CTLA ceramics
phase
microwave dielectric properties
