Ba_2Zn_ZCo_(2-Z)Fe_(12)O_(22)-SiO_2微晶玻璃陶瓷的sol-gel合成及性能研究  

Preparation and Properties of Ba_aZn_zCo_2-zFe_12O22-SiO_2 Microcrystallite Glass Ceramics by Citrate Sol-Gel Process

作　　者：张海军[1] 姚熹[2] 张良莹[2] 吴明忠[2] 

机构地区：[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

出　　处：《无机材料学报》2003年第4期759-764,共6页Journal of Inorganic Materials

基　　金：国家自然科学基金(59995320);上海市重点学科建设项目

摘　　要：采用柠檬酸sol-gel工艺合成了Ba_2Zn_ZCo_2-zFe_(12)O_(22)-SiO_2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Ba_2Zn_ZCo_2-zFe_(12)O_(22)-SiO_2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。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.

关 键 词：Ba2ZnzC02-zFel2O22-SiO2 微晶玻璃陶瓷 SOL-GEL 微波性能 

分 类 号：TM277[一般工业技术—材料科学与工程]