Zn-Ti钡铁氧体空心陶瓷微珠吸波材料的研究  

Zn-Ti Barium Ferrite Hollow Ceramic Microsphere Microwave Absorption Materials

作　　者：李志广[1] 王建江[1] 米伟娟[2] 俞梁[1] 

机构地区：[1]军械工程学院,河北石家庄050003 [2]河北传媒学院,河北石家庄050051

出　　处：《稀有金属材料与工程》2015年第7期1643-1647,共5页Rare Metal Materials and Engineering

基　　金：国家自然科学基金项目(51172282);国防科技重点实验室基金项目(9140C870401130C87300);军械工程学院科学研究基金项目(YJJXM12011)

摘　　要：利用自反应淬熄法制备了Zn-Ti钡铁氧体空心陶瓷微珠吸波材料,这种材料具有核/壳结构,比一般的铁氧体密度小,是一种新型的吸波材料;通过SEM、EDS和XRD分析表明,该材料具有中空结构,成球规则,粒径分布均匀,经过热处理之后,由非晶相物质转变为了晶相物质,主要物相为Ba Zn Ti Fe10O19和Ba Fe12O19;通过吸波性能测试,该材料具有一定的吸波性能,经过热处理之后吸波性能提高了,其吸波最低反射率为–21.98 d B,反射率小于–10 d B的带宽大于2 GH Z。The Zn-Ti barium ferrite hollow ceramic microsphere microwave absorption materials have been prepared with a self-reactive quenching method, which are new type microwave absorption materials with a core/shell structure and a lower density than general ferrite.From the SEM, EDS and XRD analyses, the results show that the materials have a middle hollow structure, the ball shape is regular and the particle size distribution is uniform.After heat treatment, the noncrystalline phases have been translated into crystalline phase and the most constituent phases are Ba Zn Ti Fe10O19 and Ba Fe12O19.From the test of microwave absorption property, the hollow ceramic microsphere material has the performance of microwave absorbing.Moreover, after heat treatment the microwave absorption properties have been raised.The lowest reflection rate is –21.98 d B and the reflection rate less than –10 d B frequency bands width is more than 2 GHz.

关 键 词：Zn-Ti钡铁氧体 空心陶瓷微珠 吸波材料 自反应淬熄法 热处理 

分 类 号：TM277[一般工业技术—材料科学与工程]