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：18

作者：

Huang, Cheng-Liang ^{[1
]}

Chen, Yuan-Bin

Tasi, Chia-Feng ^{[1
]}

机构：

[1] Natl Cheng Kung Univ, Dept Elect Engn, Tainan 70101, Taiwan

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2008年 / 460卷 / 1-2期

关键词：

ceramics; X-ray diffraction; microwave dielectric properties;

D O I：

10.1016/j.jallcom.2007.06.062

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The effects of additive sintering aids on the microsiructures and microwave dielectric properties of 0.8(Mg0.95Zn0.05)TiO3-0.2Ca(0.61)Nd(0.26)TiO(3) ceramics were investigated. B2O3 was selected as a liquid phase sintering aid to lower the sintering temperature of 0.8(Mg0.95Zn0.05)TiO3-0.2Ca(0.61)Nd(0.26)TiO(3) ceramics. With added B2O3, the densification temperature Of 0.8(Mg0.95Zn0.05)TiO3-0.2Ca(0.61)Nd(0.26)TiO(3) can be effectively reduced from 1350 degrees C to 1125-1250 degrees C. Low-level doping of B2O3 (0.5-4 wt.%) significantly improves the density and dielectric properties of 0.8(Mg0.95Zn0.05)TiO3-0.2Ca(0.61)Nd(0.26)TiO(3) ceramics. The quality factor Q xf was strongly dependent upon the amount of additives. Q xf values of 21200 and 54900 GHz could be obtained at 1125-1250 degrees 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/'degrees C. (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：675 / 679

页数：5