Fe-硅酮树脂软磁复合材料的成形工艺与磁性能研究  

Study on Forming Technology and Magnetic Properties of Fe-Silicone Resin Soft Magnetic Composites

作　　者：吴深[1] 潘胜利 刘建秀[1] 樊江磊[1] 高红霞[1] WU Shen;PAN Shengli;LIU Jianxiu;FAN Jianglei;GAO Hongxia(Institute of Mechanical and Electrical Engineering,Zhengzhou University of Light Industry,Zhengzlaou 450002,China)

机构地区：[1]郑州轻工业学院机电工程学院

出　　处：《热加工工艺》2018年第18期96-98,104,共4页Hot Working Technology

基　　金：河南省高等学校重点科研项目(17A430008);郑州轻工业学院博士科研基金项目(2014BSJJ022)

摘　　要：采用具有良好耐高温性能的硅酮树脂作为绝缘包覆剂制备铁基软磁复合材料,并研究了硅酮树脂绝缘包覆和成型压力对软磁复合材料磁性能的影响。结果表明：在铁粉颗粒表面存在一层均匀的包覆层,包覆后的样品具有在高的电阻率和宽的频率范围内良好的频率特性。600 MPa压力下成型的3wt%硅酮树脂包覆样品具有低的磁损耗,在50 kHz时其磁损耗仅为未包覆样品的29.8%。样品的压制密度和磁导率实部值随成型压力的增大逐渐提高,但高的压力会破坏绝缘层的连续性,导致涡流损耗增加。Iron based soft magnetic composites were prepared by using silicone resin with good high temperature resistance as the insulating coating agent, and the influence of silicone resin insulation coating and molding pressure on the magnetic properties of the soft magnetic composites was studied. The results show that, there is a uniform coating layer on the surface of iron powder particles. The coated sample has high resistivity and good frequency characteristics in a wide frequency range. The 3 wt% silicone resin coated sample under pressure of 600 MPa has low magnetic loss. At 50 kHz, the magnetic loss is only 29.8% of the uncoated sample. The compaction density and the real part of the permeability of the sample increase with the increase of the forming pressure. However, high pressure can destroy the continuity of insulation layer, resulting in increase of eddy current loss.

关 键 词：软磁复合材料 硅酮树脂 成型压力 磁损耗 

分 类 号：TB333.11[一般工业技术—材料科学与工程] TG132.27[金属学及工艺—合金]