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ZnO-B_2O_3玻璃对0.95(Mg_(0.9)Zn_(0.1))TiO_3-0.05CaTiO_3陶瓷烧结特性和微波介电性能的影响(英文)

Effect of ZnO-B_2O_3 Glass on Sintering Behaviour and Microwave Dielectric Properties of 0.95(Mg_(0.9)Zn_(0.1))TiO_3-0.05CaTiO_3 Ceramics
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摘要 采用传统的固相烧结工艺制备0.95(Mg0.9Zn0.1)TiO3-0.05CaTiO3陶瓷。研究了ZnO-B2O3玻璃掺杂对0.95(Mg0.9Zn0.1)TiO3-0.05CaTiO3陶瓷烧结特性、晶相成分、微观结构和微波介电性能的影响。适量的ZnO-B2O3玻璃掺杂能有效地降低烧结温度,促进致密化,从而提高微波介电性能。随着烧结温度的升高,密度、介电常数εr和Q×f值均达到最大值之后再逐渐减小。当ZnO-B2O3玻璃添加量为5wt%时,0.95(Mg0.9Zn0.1)TiO3-0.05CaTiO3陶瓷在1075℃烧结3 h,获得最佳微波介电性能:εr=19.5,Q×f=62100 GHz,τf=-13 ppm/℃。 0.95（Mg0.9Zn0.1）TiO3-0.05 CaTiO3 ceramics were synthesized by conventional solid-state reaction. The effects of ZnO-B2O3 glass addition on the sintering behaviours, crystalline phase compositions,microstructures and microwave dielectric properties of 0. 95（ Mg0. 9Zn0. 1） TiO3-0. 05 Ca TiO3 ceramics were investigated. The appropriate amount of ZnO-B2O3 glass addition can significantly reduce the sintering temperature,promote densification and improve microwave dielectric properties. As the sintering temperature increasing,the apparent density,dielectric constant εr,and the Q × f value reache the maximum value and then decrease. The optimal microwave dielectric properties（ εr= 19. 5,Q × f =62,100 GHz at 6. 8 GHz and τf=- 13 ppm / ℃） are obtained for 0. 95（ Mg0. 9Zn0. 1） TiO3-0. 05 CaTiO3 ceramics doped with 5wt% ZnO-B2O3 glass sintered at 1075 ℃ for 3 h.
作者 张文杰 王晓川 雷文 汪小红 吕文中
机构地区 华中科技大学光学与电子信息学院 华中科技大学电子信息功能材料教育部重点实验室
出处 《人工晶体学报》 EI CAS CSCD 北大核心 2015年第8期2106-2111,共6页 Journal of Synthetic Crystals
基金 National Natural Science Foundation of China(61201052,51302093)
关键词 0.95(Mg0.9Zn0.1)TiO3-0.05CaTiO3 ZnO-B2O3玻璃 烧结温度 微波介电性能 0.95（Mg0.9Zn0.1）TiO3-0.05CaTiO3 ZnO-B2O3 glass sintering temperature microwave dielectric property
分类号 TQ174 [化学工程—陶瓷工业]
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人工晶体学报
2015年 第8期

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