中文摘要：

研究了Fe78Si9B13合金的结构及其直流叠加特性,分析了气隙长度和永磁铁对其直流叠加特性的影响。样品用X射线衍射（XRD）、差示扫描量热分析（DSC）和3D高景深显微镜进行表征,直流叠加特性通过μ-H曲线进行分析。结果显示：电感磁芯的磁导率和饱和磁场强度随气隙长度的变化而变化。利用磁偏置方法能改善Fe78Si9B13非晶电感磁芯的直流叠加特性,并且不会对电感磁芯的磁导率产生不利影响。通过采用磁偏置方法,电感磁芯达到饱和需要更大的额定电流,所以磁偏置可以有效地减小电感磁芯的体积。

英文摘要：

The structure and the DC superimposition characteristics of Fe78Si9B13 amorphous alloy were investigated.The influences of the air gap length and permanent magnet of the alloy on its DC superimposition characteristics were analyzed.The amorphous alloy was characterized by X-ray diffraction（XRD）,differential scanning calorimetry（DSC） and 3D high depth of field microscope,and the DC superimposition characteristic was analyzed by means of the μ-H curves.The results show that the magnetic permeability and the saturation magnetic field intensity are dependent on the air gap length of the conventional core.The magnetic bias can improve the DC superimposition characteristic of the Fe78Si9B13 amorphous inductor core,and the magnetic permeability of the inductor cores is not adversely affected.By the magnetic bias method,larger rated current may pass through the inductor core before magnetic saturation occurs,so the inductor cores in size can be reduced effectively