Characterization and Properties of Fe/SiO2 soft Magnetic Composites Production by sol-gel Method

摘要：

　　This work investigated silica insula tion coating on the surface of Fe powder by sol-gel method from tetraethyl orthosilicate (TEOS) pre cursor and (3-Aminopropyi) triethe-oxysilane (APTES) coupling agent The microstructures and compositions of silica insulation were characterized by scanning electron microscopy (SEM) XPS and Fourier transform infrared spectroscopy (FTIR).The results show that compact silica layers with a thickness are successfully coated on the surface of the Fe powder.Compared with uncoated materials, the electrical resistivity of Fe/SiO2 SMCs increases remarkably which is 327.58μΩ.m and iron loss de creases significantly with operating frequency in creasing.The saturation magnetization and coercivi ty of Fe/SiO2 SMCs are 1.1T and 145A-m-1, re spectively.

关键词： soft magnetic composites insulation coating magnetic properties microstructure I ran loss

作者: Aikun Li Ming Xie Jianhong Yi Liya Li Jiming Zhang Youcai Yang

作者单位: State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metals,Kunmi State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metals,Kunmi School of Materials Science and Engineering,Kunming University of Science and Technology;State Key L State Key Laboratory of Powder Metallurgy,Central South University,Changsha,410083,China

会议类型: 国际会议

会议名称: The 12th China-Russia Symposium on Advanced Materials and Technologies(第十二届中俄双边新材料新工艺国际会议)

会议地点: 昆明

会议语种:英文

页码: 234-237

在线出版日期: 2013-11-19（万方平台首次上网日期，不代表论文的发表时间）