Ce掺杂BaTiO_3/Fe(CO)_5复合材料的制备及吸波性能研究  

Preparation & Microwave Absorbing Properties of Cerium-doped BaTiO_3/Carbonyl Iron Composites

作　　者：康永[1] 黄英[1] 

机构地区：[1]西北工业大学理学院应用化学系,陕西西安710072

出　　处：《稀土》2016年第1期74-79,共6页Chinese Rare Earths

基　　金：航天科技创新基金项目(NBXT0002);航天支撑技术基金项目(NBXW0001)

摘　　要：采用物理共混法制备铈掺杂钛酸钡/羰基铁复合粉体吸波材料。通过透射电镜(TEM)、红外光谱仪(IR)等测试手段对其组织进行表征,并利用矢量网络分析仪(PNA)分析了复合粉体吸波材料的电磁性能与吸波性能。结果表明,该复合材料共混均匀,且颗粒未出现团聚状态;铈掺杂钛酸钡/羰基铁复合粉体的吸波性能较钛酸钡/羰基铁有了明显提高,当羰基铁粉体的质量分数为65%时,铈掺杂钛酸钡/羰基铁复合粉体材料的吸波性能最佳,最大吸收峰值为-33dB,-10dB频宽在5089.2MHz处。该复合粉体材料的吸波频段明显拓宽。Ce- doped barium titanate / carbonyl iron ware- abosorbing composite materials were prepared by physical blending in this experiment. They were characterized by transmission electron microscopy（ TEM） and infrared spectroscopy（ IR）. Meanwhile,the electromganetic parameters and absorption properties of the Ce- doped BaTiO3/ Fe（CO）5ware-abosorbing composite materials were analyzed by using vector network analyzer（ PAN）. The results showed that the blending composite was homogenous,and the particles did not appeared agglomerated state. The microware absorption ability of the Ce- doped BaTiO3/ Fe（CO）5composites was greatly imporved compared with BaTiO3/ Fe（ CO）5composites. The carbonyl iron contents is 65%,it showed the best wave- absorbing property,of which the maximum absorption can reach- 33 d B,and-10 d B bandwidth was at 5089. 2MHz. In a word,the absorbing band of the Ce- doped barium titanate / carbonyl iron ware-abosorbing composite materials is widened obviously.

关 键 词：铈掺杂钛酸钡 羰基铁 磁导率 吸波性能 阻抗匹配 

分 类 号：TM25[一般工业技术—材料科学与工程]