FeSiBCr/硅酮树脂非晶软磁复合材料的制备及磁性能研究  

Study on Preparation and Magnetic Properties of FeSiBCr/Silicone Resin Amorphous Soft Magnetic Composites

作　　者：吴深 管英杰 刘洪坤 李杰超 董珍珍 刘建秀 WUShen;GUANYingjie;LIUHongkun;LIJiechao;DONGZhenzhen;LIUJianxiu(Institute of Mechanical and Electrical Engineering,Zhengzhou University of Light Industry,Zhengzhou 450002,China)

机构地区：[1]郑州轻工业大学机电工程学院,河南郑州450002

出　　处：《热加工工艺》2025年第7期84-89,共6页Hot Working Technology

基　　金：国家自然科学基金委-河南省联合基金项目(U1904175);河南省科技攻关计划项目(222102230056)。

摘　　要：以耐高温的硅酮树脂为绝缘包覆剂,采用粉末冶金工艺制备了FeSiBCr/硅酮树脂非晶软磁复合材料,研究了包覆剂含量及热处理温度对软磁复合材料磁性能的影响。结果表明:包覆硅酮树脂绝缘层的样品具有良好的频率特性;当硅酮树脂质量分数为4wt%时样品可获得最低的磁损耗170.28 W/kg(B_(m)=0.05 T,f=200 kHz),且损耗分离显示其涡流损耗因子最小。当退火温度低于400℃时,内应力去除不充分,磁性能不佳;高于450℃时,FeSiBCr非晶发生晶化转变使磁性能急剧恶化;只有当退火温度为400℃时,FeSiBCr非晶软磁复合材料可获得最佳磁性能,在100 kHz时的磁损耗仅为未退火样品的14.5%。FeSiBCr/silicone resin amorphous soft magnetic composites were prepared by powder metallurgy with high temperature resistant silicone resin as insulating coating agent.The effects of coating agent content and heat treatment temperature on its magnetic properties were studied.The results show that when the surface amorphous powder is coated with a layer of silicone resin the insulation layer,and the sample has good frequency characteristics.The lowest magnetic loss of 170.28 W/kg(B_(m)=0.05T,f=200 kHz)is obtained when the mass fraction of silicone resin is 4wt%,and its eddy current loss factor of the sample is lowest.When the annealing temperature is lower than 400℃,the internal stress removal is not sufficient and the magnetic properties are not good.When the annealing temperature is higher than 450℃,the amorphous FeSiBCr crystals undergo crystallization transformation and the magnetic properties deteriorate rapidly.Only when annealing is carried out at 400℃,FeSiBCr amorphous soft magnetic composites can obtain the best magnetic properties,and the magnetic loss is only 14.5%of the unannealed sample at 100 kHz.

关 键 词：粉末冶金 非晶软磁复合材料 绝缘包覆 退火 

分 类 号：TB333.1[一般工业技术—材料科学与工程]