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ZnO-B_2O_3玻璃对Mg_2TiO_4微波介质陶瓷结构和性能的影响
引用本文:李昭强,汪小红,吕文中. ZnO-B_2O_3玻璃对Mg_2TiO_4微波介质陶瓷结构和性能的影响[J]. 电子元件与材料, 2012, 0(8): 12-15
作者姓名:李昭强  汪小红  吕文中
作者单位:华中科技大学电子科学与技术系
基金项目:新世纪杰出人才资助计划(No.NCET-07-329);中央高校基本科研业务费专项资金资助项目(No.2011QN008)
摘    要:利用传统固相烧结法制备了ZnO-B2O3玻璃掺杂的Mg2TiO4微波介质陶瓷,研究了ZnO-B2O3玻璃掺杂对所制陶瓷相成分、微观形貌和微波介电性能的影响。结果表明:ZnO-B2O3玻璃掺杂能使Mg2TiO4陶瓷的致密化温度降低200℃左右。当Mg2TiO4中掺杂质量分数2%的ZnO-B2O3玻璃时,经1 300℃烧结所得陶瓷微波性能较好:εr=13.62、Q.f=101 275 GHz、τf=–51×10–6/℃。

关 键 词:Mg2TiO4陶瓷  ZnO-B2O3玻璃  掺杂  微波介电性能

Effects of ZnO-B2O3 glass on the microstructures and properties of Mg2TiO4 microwave dielectric ceramics
Affiliation:LI Zhaoqiang,WANG Xiaohong,L? Wenzhong(Department of Electronic Science and Technology,Huazhong University of Science and Technology,Wuhan 430074,China)
Abstract:The ZnO-B2O3 glass(ZBG) doping Mg2TiO4 ceramics were prepared by solid-stated reaction route.The effects of ZnO-B2O3 glass doping on phase compositions,microstructures and microwave dielectric properties of prepared ceramics were investigated.The results show that the ZnO-B2O3 glass can effectively improve the sinterability of the ceramics and lower its densification temperature by about 200℃.When 2%(mass fraction) is doped in the Mg2TiO4-ZBG system,a ceramic with good microwave dielectric properties sintered at 1 300 ℃ is obtained.The properties are as follows: εr=13.62,Q·f = 101 275 GHz,τf =-51×10-6/℃.
Keywords:Mg2TiO4 ceramics  ZnO-B2O3 glass  doping  microwave dielectric properties
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