Effect of Zn/Si ratio on the microstructural and microwave dielectric properties of Zn2SiO4 ceramics

被引：110

作者：

Nguyen, Ngoc-Huan

Lim, Jong-Bong

Nahm, Sahn ^{[1
]}

Paik, Jong-Hoo

Kim, Jong-Hee

机构：

[1] Korea Univ, Dept Mat Sci & Engn, Seoul 136701, South Korea

[2] Korea Inst Ceram Engn & Technol, Seoul 153801, South Korea

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 2007年 / 90卷 / 10期

关键词：

D O I：

10.1111/j.1551-2916.2007.01891.x

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Zn2SiO4 ceramics synthesized by the conventional solid-state method exhibited a low Q x f value, possibly due to the formation of a ZnO second phase. However, with a small ZnO reduction from the Zn2SiO4 ceramics, the ZnO second phase disappeared and grain growth occurred due to the formation of a Si-rich liquid phase. Specimens with a large grain size exhibited an improved Q x f value. In particular, the ceramics with nominal composition Zn1.8SiO3.8 sintered at 1300 degrees C exhibited improved microwave dielectric properties of epsilon(r)=6.6, Q x f=147 000 GHz, and tau(f)=-22 ppm/degrees C.

引用

页码：3127 / 3130

页数：4

共 14 条

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