片状Fe-Si-Al-Cr磁粉复合材料的传导噪声抑制特性研究  

Study on Conduction Noise Suppression Properties of Flake-shaped Fe-Si-Al-Cr Magnetic Powder Composites

作　　者：张传坤[1] 罗啸[1] 李伟[1] 马亚楠[1] 张雄[1] 杨俊涛[1] 

机构地区：[1]湖北汽车工业学院理学院,湖北十堰442002

出　　处：《湖北汽车工业学院学报》2015年第1期43-46,共4页Journal of Hubei University Of Automotive Technology

基　　金：湖北省自然科学基金项目(2014CFB631);湖北省教育厅科研计划(Q20141802;Q2011801);湖北汽车工业学院青年基金(2012XQ08)

摘　　要：通过压延工艺制备了含有片状Fe-Si—A1-Cr合金磁粉的电磁噪声抑制片，采用微带线法表征了样品的传导噪声抑制特性，并研究了磁粉填充浓度和样品厚度对噪声抑制特性的影响。结果表明：材料的传导噪声抑制特性随着磁粉填充浓度或样品厚度的增加而提高，其中填充浓度为85％（质量分数）厚度为1mm的样品在1．86～6GHz范围内功率损耗比高达90％以上，显示出优异的噪声抑制性能。The electromagnetic noise suppression sheets containing flake-shaped Fe-Si-A1-Cr alloy magnetic particles were prepared via rolling process, and their conduction noise suppression properties were characterized by micro-strip line method. The influences of filling concentration of magnetic parti- cles and sheet thickness on noise suppression properties were investigated. The results show that the conduction noise suppression properties are improved with the increase of either filling concentration or sheet thickness, and that the power loss ratio of the sheet with thickness of lmm and 85wt% filling con- centration is greater than 90% in the frequency duction noise suppression performance. range of 1.86- 6GHz, which exhibits an excellent con-

关 键 词：Fe-Si-Al-Cr 片状磁粉 噪声抑制片 传导噪声 功率损耗比 

分 类 号：TM25[一般工业技术—材料科学与工程]