Effect of SiO2 Content on the Electromagnetic Properties of CoZn-Z Type Barium Ferrite Prepared with Ferrous Micro-beads

摘要：

　　Ferrous micro-beads from fly-ash were used as starting material to prepare CoZn-Z type barium ferrite.As the main impurity in the beads,SiO2 plays an important role on the electromagnetic properties of the ferrites.To investigate the effect of SiO2 content,a series of CoZn-Z type ferrites with various contents of SiO2 (1 wt%,2 wt% and 5 wt %) were prepared with analytical pure Fe2O3 and SiO2.The density,phase composition,microstructure and electromagnetic properties of the sintered samples were investigated.The results show that the permeability of samples alters little at a low content of SiO2 about 1 wt%,but deteriorates dramatically when the addition of SiO2 is above 2 wt%.The ferrous micro-beads were then treated by alkali cleaning to reduce the content of SiO2 to about 1 wt%,and the samples prepared with these treated beads show a similar performance on the electromagnetic properties with pure CoZn-Z type ferrite.

关键词： CoZn-Z type barium ferrite Ferrous micro-beads Permeability Silica

作者: Yuemiao Sun Qun Wang Zhixue Qu Meiwu Shi

作者单位: College of Materials Science and Engineering,Beijing University of Technology,Beijing 100124,China The Quartermaster Research Institute of the General Logistics Department of the PLA,Beijing 100082

会议类型: 国际会议

会议名称: The Seventh China International Conference on High-Performance Ceramics (第七届先进陶瓷国际研讨会(CICC-7))

会议地点: 厦门

会议语种:英文

页码: 1424-1428

在线出版日期: 2011-11-04（万方平台首次上网日期，不代表论文的发表时间）