非晶合金Fe-B-P的制备及吸波性能研究  

Preparation and Microwave Absorption Properties of Amorphous Alloy Fe-B-P

作　　者：贾启才 曾庆轩[1] 乔小晶[1] 

机构地区：[1]北京理工大学机电学院,北京

出　　处：《材料科学》2022年第4期307-315,共9页Material Sciences

摘　　要：利用液相还原法制备了球形Fe-B-P非晶态合金颗粒,研究了不同活性剂的添加对合金颗粒的微观形貌、结构特征、磁性能和吸波性能的影响。结果表明,不同活性剂的加入有利于颗粒粒径的减小,并避免颗粒团聚。活性剂的加入会促进合金呈完全非晶态结构,并使合金颗粒的饱和磁化强度明显提高,这有利于提高其软磁性能。AgNO3作活性剂时,合金颗粒呈最大的饱和磁化强度值为164 emu/g;在吸收体厚度为2.7 mm、匹配频率为6.1 GHz时反射损耗出现最小值为−54.21 dB,有效吸收带宽为3.3 GHz (4.4~7.7 GHz)。由此可见,非晶态合金Fe-B-P具备优异的软磁性能和吸波性能,在吸波材料领域具有广阔的应用前景。Amorphous alloy Fe-B-P spherical particles were prepared by liquid phase reduction method. The effects of different active agents on the microstructure, structural characteristics, magnetic properties and microwave absorption properties of the alloy particles were studied. The results show that the addition of different active agents is conducive to the reduction of particle size and to avoid particle agglomeration. The addition of active agent would promote the complete amorphous structure and significantly improve the saturation magnetization of the alloy particles, which is conducive to improve its soft magnetic properties. While AgNO3 is used as an active agent, the saturation magnetization of the sample presents the maximum value of 164 emu/g, and the minimum reflection loss is −54.21 dB with the absorber thickness of 2.7 mm and the matching frequency of 6.1 GHz. Meanwhile, the effective absorption bandwidth is 3.3 GHz (4.4~7.7 GHz). Therefore, amorphous alloy Fe-B-P presents excellent soft magnetic properties and microwave absorption properties, which has broad application prospects in the condition of microwave absorption materials.

关 键 词：Fe-B-P 非晶合金 磁性能 吸波性能 

分 类 号：TG139[一般工业技术—材料科学与工程]