ZnO-B2O3玻璃对Li2Zn3Ti4O12-CaTiO3复合陶瓷低温烧结及性能的影响

硅酸盐通报 ›› 2021, Vol. 40 ›› Issue (10): 3305-3310.

ZnO-B₂O₃玻璃对Li₂Zn₃Ti₄O₁₂-CaTiO₃复合陶瓷低温烧结及性能的影响

舒国劲, 袁世逢, 庞锦标, 窦占明, 杨俊, 刘凯, 韩光学

中国振华集团云科电子有限公司,贵阳 550018

收稿日期:2021-07-01 修回日期:2021-08-18 出版日期:2021-10-15 发布日期:2021-11-11
作者简介:舒国劲(1991—),男,工程师。主要从事HTCC/LTCC组件以及微波介质陶瓷研究。E-mail:guojinshu2021@163.com
基金资助:
工信部强基工程项目(0714-EMTC-02-00869);装备发展部材料支撑项目

Effect of ZnO-B₂O₃ Glass on Low Temperature Sintering and Properties of Li₂Zn₃Ti₄O₁₂-CaTiO₃ Composite Ceramics

SHU Guojin, YUAN Shifeng, PANG Jinbiao, DOU Zhanming, YANG Jun, LIU Kai, HAN Guangxue

China Zhenhua Group Yunke Electronics Co., Ltd., Guiyang 550018, China

Received:2021-07-01 Revised:2021-08-18 Online:2021-10-15 Published:2021-11-11

摘要/Abstract

摘要： 采用传统固相反应法制备0.94Li₂Zn₃Ti₄O₁₂-0.06CaTiO₃(LZT-CT)复合陶瓷,采用高温熔融法制备ZnO-B₂O₃(ZB)玻璃;以ZB玻璃为烧结助剂,研究了添加不同质量分数(x=0.5%、1.0%、1.5%、2.0%和2.5%)的ZB玻璃对LZT-CT复合陶瓷的烧结特性、物相组成、微观结构以及微波介电性能的影响。结果表明:ZB玻璃能有效地将LZT-CT复合陶瓷的烧结温度从1 175 ℃降低到875 ℃,并促进了LZT-CT复合陶瓷的致密化。当ZB玻璃掺量x≤2.5%时,LZT-CT复合陶瓷中除了LZT、CT相,没有出现其他新相。随着ZB玻璃添加量增加,复合陶瓷的体积密度、介电常数(ε_r)、品质因数(Q×f)均先增加后减小,谐振频率温度系数(τ_f)变化不大,在(-2.25~4.51)×10^-6/℃波动。当ZB玻璃掺量为2.0%时,LZT-CT复合陶瓷在875 ℃烧结2 h,获得最大体积密度(4.22 g/cm³)以及优异的微波介电性能,ε_r=23.9,Q×f=58 595 GHz,τ_f=-0.14×10^-6/℃。

关键词: ZnO-B₂O₃玻璃, 0.94Li₂Zn₃Ti₄O₁₂-0.06CaTiO₃复合陶瓷, 低温烧结, 微波介电性能

Abstract: The 0.94Li₂Zn₃Ti₄O₁₂-0.06CaTiO₃ (LZT-CT) composite ceramics were prepared by the traditional solid-state reaction method, and ZnO-B₂O₃(ZB) glass was synthesized by high temperature melting method. The sintering characteristics, phase compositions, microstructures and microwave dielectric properties of LZT-CT composite ceramics with different mass fraction (x=0.5%, 1.0%, 1.5%, 2.0% and 2.5%) of ZB glass were investigated in detail. The results indicate that, the ZB glass effectively decreases the sintering temperature of the LZT-CT composite ceramics from 1 175 ℃ to 875 ℃ and also promotes the densifiction. There are no new phases in addition to the LZT and CT phase when ZB glass addition x≤2.5%. With the increase of ZB glass addition, the densification temperature of composite ceramics decreases gradually, the bulk density, relative permittivity (ε_r), quality factor (Q×f) initially increase and then decrease, and the temperature coefficient of resonance frequency (τ_f) is stable, fluctuated between -2.25×10^-6/℃ and 4.51×10⁶/℃. When added 2.0%ZB glass, LZT-CT composite ceramics sintered at 875 ℃ for 2 h obtained maximun bulk density of 4.22 g/cm³, and excellent microwave dielectric properties: ε_r=23.9, Q×f=58 595 GHz, τ_f=-0.14×10^-6/℃.

Key words: ZnO-B₂O₃ glass, 0.94Li₂Zn₃Ti₄O₁₂-0.06CaTiO₃ composite ceramics, low temperature sintering, microwave dielectric property

中图分类号:

TQ174

舒国劲, 袁世逢, 庞锦标, 窦占明, 杨俊, 刘凯, 韩光学. ZnO-B₂O₃玻璃对Li₂Zn₃Ti₄O₁₂-CaTiO₃复合陶瓷低温烧结及性能的影响[J]. 硅酸盐通报, 2021, 40(10): 3305-3310.

SHU Guojin, YUAN Shifeng, PANG Jinbiao, DOU Zhanming, YANG Jun, LIU Kai, HAN Guangxue. Effect of ZnO-B₂O₃ Glass on Low Temperature Sintering and Properties of Li₂Zn₃Ti₄O₁₂-CaTiO₃ Composite Ceramics[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2021, 40(10): 3305-3310.

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ZnO-B₂O₃玻璃对Li₂Zn₃Ti₄O₁₂-CaTiO₃复合陶瓷低温烧结及性能的影响

Effect of ZnO-B₂O₃ Glass on Low Temperature Sintering and Properties of Li₂Zn₃Ti₄O₁₂-CaTiO₃ Composite Ceramics

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