摘要
选用高纯原料,采用传统氧化物陶瓷工艺,复合添加纳米SiO2、普通CaCO3,制备MnZn铁氧体材料,实现了低ZnO、高密度,高温(100℃)Bs达到了450mT;通过二次添加TiO2杂质、调整Mn3O4含量控制Fe2+,使K1→0,获得了较为平坦的Pcv^T曲线。根据铁氧体各温区固相反应的机理研究出烧结工艺与混合气氛的合理匹配技术并应用于材料研制。成功研制出了高温高Bs、低功耗MnZn铁氧体TP4F材料。
MnZn ferrite with low power loss and high Bs in high operating temperature has been prepared by choosing highly pure raw materials, using conventional ceramic process, adding nanosized SiO2 and ordinary CaCO3, High density at low ZnO2 content and Bs=450mT at 100℃ were obtained. The Pcv-Tcurve becomes flat because of K1→0 by adding TiO2 in twice, adjusting Mn3O4 content, controlling Fe^2＋, According to the solid-phase reaction mechanism of ferrite, firing parameters and matched atmosphere were determined for low power loss and high Bs in high temperature ferrite TP4F material.
出处
《磁性材料及器件》
CAS
CSCD
2006年第1期39-41,47,共4页
Journal of Magnetic Materials and Devices
作者简介
作者通信：Tel：0573-7228039 E-mail：jszx@tdgcore.com
