摘要
采用固相烧结法制备0. 6Li_2ZnTi_3O_8-0. 4Li_2TiO_3陶瓷,并研究了ZBS (ZnO-B2O3-SiO2)掺杂对0. 6Li_2ZnTi_3O_8-0. 4Li_2TiO_3陶瓷的相组成、致密度、微观形貌及微波介电性能的影响。结果表明,0. 6Li_2ZnTi_3O_8-0. 4Li_2TiO_3+xZBS陶瓷中仅存在Li_2ZnTi_3O_8和Li_2TiO_3相。随着x的增加,其致密化温度逐渐降低,相对介电常数εr和品质因子Q·f均先增加后减小,谐振频率温度系数τ_f基本不变。当x为1%(质量分数)时,0. 6Li_2ZnTi_3O_8-0. 4Li_2TiO_3+1%ZBS陶瓷在900℃烧结4 h后具有良好的微波介电性能:εr=25. 4,Q·f=88640 GHz,τ_f=-1×10^(-6)℃^(-1),且与Ag具有良好的化学相容性。
0.6Li2 ZnTi3 O8-0.4Li2 TiO3 ceramics were prepared by the solid-state reaction method.The effects of ZBS(ZnOB2 O3-SiO2)doping on the phase composition,density,microstructure and microwave dielectric properties of 0.6Li2 ZnTi3 O8-0.4Li2 TiO3 ceramics were investigated.The results show that 0.6Li2 ZnTi3 O8-0.4Li2 TiO3+xZBS ceramics consist of Li2 ZnTi3 O8 and Li2 TiO3 phases.With the increase of x,the densification temperature of ceramics decreases gradually,the relative permittivityεr and quality factor Q·f initially increase and then decrease,and the temperature coefficient of resonance frequencyτf is stable.When x is 1%(mass fraction),the 0.6Li2 ZnTi3 O8-0.4Li2 TiO3+1%ZBS ceramic sintered at 900℃for 4 h exhibits excellent microwave dielectric properties:εr=25.4,Q·f=88640 GHz,τf=-1×10^-6℃^-1.This ceramic also exhibits good chemical compatibility with Ag.
作者
张梦迪
吕学鹏
郑勇
ZHANG Mengdi;LV Xuepeng;ZHENG Yong(College of Materials Science and Technology,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China;School of Materials Science and Engineering,Nanjing Institute of Technology,Nanjing 211167,China)
出处
《电子元件与材料》
CAS
CSCD
北大核心
2019年第1期42-48,共7页
Electronic Components And Materials
基金
国家自然科学基金资助项目(51674148
51602145)
江苏高校优势学科建设工程资助项目
中央高校基本科研业务费专项资金资助(NS2016060)
