低B_2O_3掺杂Bi-CVG铁氧体的结构与性能  

Microstructure and Properties of Bi-CVG Ferrite With Low B_2O_3 Dopant

作　　者：周军师 王永安 许启明[2] 郝利军[2] 

机构地区：[1]陕西金山电器有限公司,陕西咸阳712021 [2]西安建筑科技大学材料科学与工程学院,陕西西安710055

出　　处：《材料开发与应用》2009年第6期28-32,共5页Development and Application of Materials

基　　金：陕西省科学技术研究计划资助项目(07JC08);西安市科技计划资助项目(CXY08006)

摘　　要：采用传统固相反应法制备了Y1.05Bi0.75Ca1.2Fe4.4-xV0.6BxO12(Bx:Bi-CVG)系列铁氧体试样。借助XRD、SEM及MATS等技术手段研究了烧结助剂B2O3对Bi-CVG铁氧体的体积密度、相组成、微观结构及磁性能的影响。研究结果表明,掺B可以有效降低Bi-CVG铁氧体的烧成温度,提高材料的烧结密度并且影响其微观结构和磁性能。在1040℃×6 h条件下烧结、B掺杂量为x=0.025时,制备出综合性能良好的Bi-CVG铁氧体材料:室温时D=5.11g/cm3,DR.T=97.2%,Bs=37.30mT,Br=25.54mT,Hc=0.87kA/m。Bs：Bi - CVG ferrite samples were prepared by solid - state reaction. The effect of sintering additives of B2O3 on the bulk density, phase structure, microstruetures and magnetic properties of Bi - CVG were investigated by means of XRD, SEM and MATS. The results showed that doping B can lower sintering temperature of Bi - CVG samples. B doping leads to an increase in density and has an influence on microstructures and magnetic properties of samples. With B dopant dose x = 0. 025 and as sintered at 1040℃ for 6h, the sample obtained has good integrated properties：with D =5. 11g/cm^3 ,DR.T =97.2% ,Bs= 37.30roT,B, =25.54mT,Hc =0.87kA/m in room temperature.

关 键 词：Bi-CVG铁氧体 B2O3掺杂 低温烧结 磁性能 微观结构 

分 类 号：TB34[一般工业技术—材料科学与工程]