低损耗铁硅铝磁粉芯的温度特性研究  

Study on temperature characteristics of low loss FeSiAl magnetic powder cores

作　　者：金大利[1] 刘先松[1] 黄凯[1] 高尚[1] 

机构地区：[1]安徽大学物理与材料科学学院 磁性材料安徽省工程技术研究中心,合肥230601

出　　处：《功能材料》2014年第10期55-57,共3页Journal of Functional Materials

基　　金：国家自然科学基金资助项目(51072002,51272003);安徽大学“211工程”学术创新团队科研课题资助项目(02303402);安徽省教育厅重点科研资助项目(KJ2010A008,KJ2012A027);高等学校博士学科点专项科研基金资助项目(20123401110008)

摘　　要：采用新型绝缘粘结剂对铁硅铝粉进行多层绝缘包覆,制备了铁硅铝磁粉芯,利用 XRD和 B-H 分析仪对其结构、磁性能及温度特性进行了研究。结果表明,室温下,在频率为10-200 kHz 和磁通密度为0.01-0.1 T范围内,样品具有低损耗特征；随温度的升高,初始磁导率先升高后降低,磁导率温度系数较小,样品具有良好的温度稳定性；在10 kHz,0.2 T下,随温度的升高,损耗先减小后增大,在10℃时达到最小值93.66 mW/cm3。FeSiAl magnetic powder cores were prepared by the new type of insulating binder multilayer coating on FeSiAl powder.XRD and B-H analyzer were applied to investigate the structure,magnetic properties and temperature characteristics of the cores.The results showed that the sample has the low loss with flux density from 0.01 to 0.1 T under frequency between 10 kHz and 200 kHz at room temperature.With the increasing of temperature,initial permeability increased at first then decreased.The sample had good temperature stability according to a small temperature coefficient of permeability.At f=10 kHz and B=0.2 T,the power loss rea-ches the minimum of 93.66 mW/cm3 at 10 ℃.

关 键 词：铁硅铝磁粉芯 磁性 损耗 温度特性 

分 类 号：TM271.2[一般工业技术—材料科学与工程]