外加静磁场下片状FeSiAl复合材料的干扰抑制性能  

Study on Interference Suppression of Flake FeSiAl Composites under External Magnetic Field

作　　者：廖丽 金鑫[1] 唐章宏[1] 王群[1] 

机构地区：[1]北京工业大学电磁防护与测量实验室

出　　处：《安全与电磁兼容》2018年第1期63-67,共5页Safety & EMC

摘　　要：通过球磨工艺将Fe Si Al粉末扁平化,以PVB为粘结剂,利用流延法制备片状Fe Si Al复合材料干扰抑制片。分析流延过程中外加静磁场对样品形貌的影响;搭建同侧去耦比、异侧去耦比及传输功率损耗比三种测量体系,分析样品的干扰抑制性能。结果表明,外加静磁场使得片状Fe Si Al颗粒长轴方向沿磁力线有序分层排列,有效提升复合材料的干扰抑制性能。Flake-shape Fe Si Al was prepared by using ball-milling method. Flake Fe Si Al interference suppression sheets were fabricated with PVB as binder via tape-casting method. The effect of applied static magnetic field on the morphology of the sample was analyzed. Three kinds of measurement systems, intra-decoupling ratio, inter-decoupling ratio and transmission power loss ratio, are set up to analyze the interference suppression performances. It is found that long axis of Fe Si Al flakes exhibit layered structure arrangement along magnetic lines of force under external magnetic field. This way can effectively enhance the interference suppression performances of composites.

关 键 词：FeSiAl复合材料 扁平化 近场去耦 传输功率损耗比 

分 类 号：TB33[一般工业技术—材料科学与工程]