Characterization and Microwave Dielectric Properties of Mg4Nb2O9 ceramics produced via using nanopowders

被引：1

作者：

Ma, JianLi ^{[1
]}

Fu, ZhiFen ^{[1
]}

Tang, Xudong ^{[1
]}

Li, Yang ^{[1
]}

机构：

[1] Atnhui Univ Sci & Technol, Coll Sci, Huainan 232001, Peoples R China

来源：

FERROELECTRICS | 2016年 / 502卷 / 01期

基金：

中国国家自然科学基金;

关键词：

Ceramics; microstructure; sintering; microwave dielectric properties; LOW-TEMPERATURE SYNTHESIS; CRYSTAL-STRUCTURE; BEHAVIOR;

D O I：

10.1080/00150193.2016.1235443

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Mg4Nb2O9 ceramics were prepared by using nanopowders (average grain size of 63.4nm) as a precursor, synthesized via high-energy ball milling method at 900 degrees C. The microstructure, sintering behaviors and microwave dielectric properties of ceramics are systematically investigated. Due to the refined grains, Sintering temperature of Mg4Nb2O9 ceramics is effectively reduced to 1200 degrees C, 150 degrees C lower than that required by a conventional solid state reaction process. Mg4Nb2O9 ceramics possess a relative densities of 96.4%, a grain size of 1.5-5.0m and an excellent microwave dielectric properties (E-r of 12.6, Q xf of 175810.0GHz, and (f) of -56.6 ppm/degrees C), which make it as a potential candidate for practical application.

引用

页码：130 / 136

页数：7

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