BaFe_(12)O_(19)/SiO_2-B_2O_3-K_2O微晶玻璃陶瓷的低温合成及其微波性能  

STUDIES ON LOWTEMPERATURE PREPARATION AND MICROWAVE PROPERTIES OF BaFe_(12)O_(19)/SiO_2-B_2O_3-K_2O MICROCRYSTALLITE GLASS CERAMICS

作　　者：张海军[1] 贾晓林[1] 王桂红[2] 姚熹[3] 张良莹[3] 

机构地区：[1]郑州大学高温材料研究所,郑州450052 [2]郑州大学医学院,郑州450052 [3]同济大学功能材料研究所,上海200092

出　　处：《复合材料学报》2004年第1期1-6,共6页Acta Materiae Compositae Sinica

基　　金：国家自然科学基金资助重大项目(59995320)

摘　　要：　采用柠檬酸sol-gel工艺合成了BaFe12O19/SiO2-B2O3-K2O微晶玻璃陶瓷,并对其介电常数及其磁导率在100MHz～6GHz下的变化规律进行了研究。结果表明:BaFe12O19/SiO2-B2O3-K2O微晶玻璃陶瓷可以在850℃/5h的条件下烧结而成,其合成过程与体系中的Ba/Fe密切相关;其介电常数基本不随测试频率的变化而变化;其磁导率实部随测试频率的增加而下降。BaFe12O19 / SiO2-B2O3-K2O microcrystallite glass ceramics were prepared by citrate sol-gel process. The dielectric constant and permeability dispersion were investigated in 100 MHz-6.0 GHz range. It was discovered that the synthesis temperature of BaFe12O19 / SiO2-B2O3-K2O microcrystallite glass ceramics is about 850°C and the condition such as Ba/Fe content had a close effect on the synthesis of BaFe12O19 / SiO2-B2O3-K2O. It showed that the dielectric exhibits almost no variation with measuring frequency increasing. The real part of permeability decreases as the measuring frequency increasing.

关 键 词：BaFe12O19/SiO2-B2O3-K2O 微晶玻璃陶瓷 溶胶-凝胶 微波性能 

分 类 号：TM277[一般工业技术—材料科学与工程]