Influence of B2O3 additions to 0.8(Mg0.95Zn0.05)TiO3-0.2Ca0.61Nd0.26TiO3 ceramics on sintering behavior and microwave dielectric properties

被引：0
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作者：
Huang, Cheng-Liang [1 ]
Chen, Yuan-Bin [2 ]
Tasi, Chia-Feng [1 ]
机构：
[1] Department of Electrical Engineering, National Cheng Kung University, Tainan, 70101, Taiwan
[2] Engineering and Management, Chang Jung Christian University, Taiwan
来源：
Journal of Alloys and Compounds | 2008年 / 460卷 / 1-2期
关键词：
The effects of additive sintering aids on the microstructures and microwave dielectric properties of 0.8(Mg0.95Zn0.05)TiO3-0.2Ca0.61Nd0.26TiO3 ceramics were investigated. B2O3 was selected as a liquid phase sintering aid to lower the sintering temperature of 0.8(Mg0.95Zn0.05)TiO3-0.2Ca0.61Nd0.26TiO3 ceramics. With added B2O3; the densification temperature of 0.8(Mg0.95Zn0.05)TiO3-0.2Ca0.61Nd0.26TiO3 can be effectively reduced from 1350 °C to 1125-1250 °C. Low-level doping of B2O3 (0.5-4 wt.%) significantly improves the density and dielectric properties of 0.8(Mg0.95Zn0.05)TiO3-0.2Ca0.61Nd0.26TiO3 ceramics. The quality factor Q × f was strongly dependent upon the amount of additives. Q × f values of 21200 and 54900 GHz could be obtained at 1125-1250 °C with 0.5 to 4 wt.% B2O3 added; respectively. Over all ranges of addition; the relative dielectric constants differed significantly and ranged from 24.1 to 26.6. The temperature coefficient varied from 2.9 to 10.03 ppm/°C. © 2007 Elsevier B.V. All rights reserved;
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页码：675 / 679
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