铈掺杂钛酸钡/羰基铁复合粉体吸波材料的性能  

Properties of Cerium-doped Barium Titanate/Carbonyl Iron Composite Powders Ware-Abosorbing Materials

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,西安710072

出　　处：《机械工程材料》2015年第5期54-57,62,共5页Materials For Mechanical Engineering

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

摘　　要：采用物理共混法制备含有10%~100%（质量分数）羟基铁粉的稀土铈掺杂钛酸钡/羰基铁复合粉体吸波材料,利用透射电镜（TEM）、红外光谱仪（IR）等对其微观结构进行了表征,利用矢量网络分析仪（PAN）研究了复合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;复合材料的介电常数和磁导率均较低;当羟基铁粉的质量分数为65%时,铈掺杂钛酸钡/羰基铁复合粉体吸收材料的回波损耗峰值最小,在低频范围内的吸波性能最佳。Ce-doped barium titanate/carbonyl ware-abosorbing iron wave-absorbing composites with carbonyl iron of 10wt %-100wt% of were prepared by physical blending. The microstrure was characterized by transmission electron microscopy （TEM） and infrared spectroscopy （IR）, the electromagnetic properties and wave-absorbing properties of the composite were studied by using a vector network analyzer （PAN）. The results show that, the composite blending evenly, and the particles did not found at agglomerated state. The composite had lower dielectric constant and permeability. When the mass fraction of carbonyl iron was 65%, the composite exhibited the smallest return loss peak value and own the best wave-return loss properties at the range of low frequency.

关 键 词：铈掺杂钛酸钡 羰基铁 磁导率 吸波性能 

分 类 号：TM25[一般工业技术—材料科学与工程]