无机材料学报

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Ba2ZnZCo2-ZFe12O22-SiO_2微晶玻璃陶瓷的sol-gel合成及性能研究

张海军1; 姚熹2; 张良莹2; 吴明忠2   

  1. 1. 郑州大学高温材料研究所, 河南郑州 450052; 2. 同济大学功能材料研究所, 上海 200092
  • 收稿日期:2002-06-05 修回日期:2002-06-21 出版日期:2003-07-20 网络出版日期:2003-07-20

Preparation and Properties of Ba2ZnzCo2-zFe12O22-SiO2 Microcrystallite Glass Ceramics by Citrate Sol-Gel Process

ZHANG Hai-Jun1; YAO Xi2; ZHANG Liang-Ying2; WU Ming-Zhong2   

  1. 1.High Temperature Ceramics Institute; Zhengzhou University; Zhengzhou 450052; China; 2.Functional Material Research Laboratory; Tongji University; Shanghai 200092; China
  • Received:2002-06-05 Revised:2002-06-21 Published:2003-07-20 Online:2003-07-20

摘要: 采用柠檬酸sol-gel工艺合成了Ba2ZnZCo2-zFe12O22-SiO2微晶玻璃陶瓷;采用XRD、SEM对其相成分、显微结构进行了分析,结果表明,1200°C/5h得到的Ba2ZnZCo2-zFe12O22-SiO2微晶玻璃陶瓷的平均晶粒尺寸在0.3μm左右;采用HP8753E网络分析仪测定了微晶玻璃陶瓷在100MHz~6GHz范围内的介电常数及其磁导率,其复介电常数值、磁导率实部都随测试频率的增加而减小,其磁导率虚部~f曲线上显示出明显的自然共振峰。

关键词: Ba2ZnzCo2-zFe12O22-SiO, 微晶玻璃陶瓷, sol-gel, 微波性能

Abstract: Ba2ZnZCo2-ZFe12O22-SiO2 microcrystallite glass ceramics were prepared by citrate sol-gel process; The detailed informations of phases
composition and microstructure were obtained by XRD and SEM. It shows that the average crystal size of Ba2ZnZCo2-ZFe12O22-SiO2 microcrystallite
glass ceramics calcined at 1200℃/5h is about 0.3μm; The vector network analyzer was used to measure the complex permeability and dielectric
constant of the samples in the frequency range of 0.1~6.0GHz, the complex dielectric constant and the real part of permeability decrease with measuring
frequency increasing, very obvious resonance peaks were observed in μ’’~ f curves.

Key words: Ba2ZnzCo2-zFe12O22-SiO, microcrystallite glass ceramics, sol-gel, microwave prop- erties

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