Fabrication of Z-type barium ferrite/silica composites with enhanced microwave absorption  

作　　者：SHEN JunHai CHEN KeYu LI LiangChao DING Yan LI JuanBi KONG WeiQiu 

机构地区：[1]Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University

出　　处：《Science China(Technological Sciences)》2014年第9期1858-1864,共7页中国科学（技术科学英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant No.21071125);the College Students’Science and Technology Innovation Activities Plan of Zhejiang(Grant No.2014R404056);Special and Key Laboratory of Functional Materials and Resource chemistry of Guizhou Provincial Education Department,Anshun University(Grant No.GAFMRC201304)

摘　　要：The Z-type barium ferrite/silica composites(Z-BCF/SiO2)were fabricated by in situ chemical synthesis method.The composition,structure,morphology and magnetic behavior of the composites were characterized by chemical analysis,IR,XRD,SEM,TEM and VSM.The results indicated that there were some interactions between two components in the Z-BCF/SiO2 composites due to the coating of SiO2 on the Z-BCF particles.The magnetic properties of the Z-BCF/SiO2 composites were evidently less than that of the Z-BCF,owing to the small volume fraction of magnetic components in the samples.Due to the good transmission and loss properties on electromagnetic waves,the composites were better at microwave absorption than the parent component.Therefore,this research laid a foundation for the fabrication of highly efficient microwave absorbing material with enhanced wave impedance matching.

关 键 词：barium ferrite SILICA COMPOSITES microwave absorption performance 

分 类 号：TB332[一般工业技术—材料科学与工程]