CaO对Mn-Zn铁氧体微观结构与磁性能的影响  

Effect of CaO on microstructure and magnetic properties of Mn-Zn ferrites

作　　者：王凡 孙玉坤 徐扬 李冬云 周玄 龙雯 葛洪良 颜冲 

机构地区：[1]中国计量大学材料科学与工程学院,浙江杭州310018

出　　处：《中国计量学院学报》2016年第3期350-354,共5页Journal of China Jiliang University

基　　金：浙江省自然科学基金资助项目(No.LY14E020009);浙江省公益性项目(No.2015C31041)

摘　　要：采用传统氧化物陶瓷工艺制备了CaO-Bi2O3-MoO3-Nb2O5复合掺杂高磁导率Mn-Zn铁氧体材料,利用扫描电子显微镜(SEM)、B-H测试仪和阻抗分析仪等对材料结构和磁性能进行了表征,研究了不同添加量CaO对高磁导率Mn-Zn铁氧体的微观结构和磁性能的影响.结果表明,添加适量的CaO可以细化晶粒、提高材料的频率特性和品质因数Q,降低材料的损耗;当质量分数CaO=0.030%时,材料具有最佳的综合性能:μi=9 772.22,L200/L10=99.36%,室温PCV=435.14mW/cm3.CaO-Bi2O3-MoO3-Nb2O5 doped high permeability Mn-Zn ferrites were prepared by traditional oxide ceramic processing.The effects of CaO on the microstructure and magnetic properties of Mn-Zn ferrites were investigated by scanning electron microscope（SEM）,the B-H tester and the impedance analyzer.The results indicated that a suitable amount of CaO in complex additive could improve the frequency characteristics and the quality factor Qof the magnetic material.It was also benefitial to grain refinement and could reduce specific losses.The best performance（μi=9 772.22,L200/L10=99.36%,PCV=435.14mW/cm3）was obtained when the content of CaO is 0.030%.

关 键 词：复合掺杂 MN-ZN铁氧体 微观结构 磁性能 

分 类 号：TB321[一般工业技术—材料科学与工程] TQ139.2[化学工程—无机化工]