摘要
Li_2ZnTi_3O_8(LZT)陶瓷具有很好的微波介电性能,但其烧结温度较高(1 150℃),与低温共烧陶瓷(LTCC)工艺不兼容。该文通过掺杂低熔Li2O-B2O3-SiO2-CaO-Al_2O_3(LBSCA)玻璃来降低Li_2ZnTi_3O_8陶瓷的烧结温度,并详细研究了LBSCA掺杂量对材料体系物相结构、微观形貌、致密化程度及微波介电性能的综合影响。研究结果发现,当LBSCA的质量分数为1.5%,并在900℃低温烧结时可表现出优异的微波介电性能,即相对介电常数εr=23,品质因数与频率的乘积Q×f=39 762,密度ρ=3.59g/cm3,频率温度系数τf=-13.75×10-6/℃,能很好地应用于LTCC技术领域。
Li_2ZnTi_3O_8ceramic has excellent microwave dielectric properties.But its sintering temperature is too high(1 150 ℃)to be compatible with LTCC technology.The Li2O-B2O3-SiO2-CaO-Al2O3(LBSCA)glass was used to dope in Li_2ZnTi_3O_8 ceramic to reduce the sintering temperature.The influences of LBSCA dopant amount on the crystal phase,microstructure,densification and microwave dielectric properties of the Li_2ZnTi_3O_8 material systems was investigated.It was found that with 1.5% LBSCA addition and sintered at 900 ℃,the sample presented excellent microwave dielectric properties withεr=23,Q×f=39 762,ρ=3.59g/cm3,τf=-13.75×10-6/℃,which was very suitable for LTCC applications.
出处
《压电与声光》
CAS
CSCD
北大核心
2017年第1期63-66,共4页
Piezoelectrics & Acoustooptics
基金
国家自然科学基金资助项目(61271038
51472042)
四川省科技支撑基金资助项目(2014GZ0015
2015GZ0227)
广东省特支计划基金资助项目(2014TX01C042)
作者简介
彭文平（1988-）,男,四川巴中人,硕士生,主要从事微波陶瓷及器件电路的研究.
通信作者：苏桦（1977-）,教授,博士生导师,博士,主要从事高性能电子功能陶瓷材料及应用的研究.E-mail：uestcsh@163.com.
