| ZnO-B2O3玻璃对Li2Zn3Ti4O12-CaTiO3复合陶瓷低温烧结及性能的影响 |
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| 引用本文： | 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 |
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| 作者姓名： | 舒国劲 袁世逢 庞锦标 窦占明 杨俊 刘凯 韩光学 |
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| 作者单位： | 中国振华集团云科电子有限公司,贵阳550018 |
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| 基金项目： | 工信部强基工程项目(0714-EMTC-02-00869);装备发展部材料支撑项目 |
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| 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(εr)、品质因数(Q×f)均先增加后减小,谐振频率温度系数(τf)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,εr=23.9,Q×f=58 595 GHz,τf=-0.14×10-6/℃。
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| 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 |
| 收稿时间： | 2021-07-01 |
Effect of ZnO-B2O3 Glass on Low Temperature Sintering and Properties of Li2Zn3Ti4O12-CaTiO3 Composite Ceramics |
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| 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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| Authors: | SHU Guojin YUAN Shifeng PANG Jinbiao DOU Zhanming YANG Jun LIU Kai HAN Guangxue |
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| Affiliation: | China Zhenhua Group Yunke Electronics Co., Ltd., Guiyang 550018, China |
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| 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 (εr), quality factor (Q×f) initially increase and then decrease, and the temperature coefficient of resonance frequency (τf) 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: εr=23.9, Q×f=58 595 GHz, τf=-0.14×10-6/℃. |
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| Keywords: | ZnO-B2O3 glass 0.94Li2Zn3Ti4O12-0.06CaTiO3 composite ceramics low temperature sintering microwave dielectric property |
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