双层复合材料的软磁性能

利用单辊法制备单层非晶薄带,采用双喷嘴快速凝固技术将2层合金直接复合到一起,制备出双层非晶复合带材料.研究了单层薄带材料的软磁性能以及双层复合后软磁性能的变化,结果表明:将具有高的磁导率、低弛豫频率和高弛豫频率、较低磁导率两2种材料制成双层复合材料能有效地改善其软磁综合性能,并根据畴壁运动动力学和内应力的影响进行了分析.该研究对改善软磁材料的综合性能具有重要意义.

Magnetic properties of Fe-based bilayer composite materials

Monolayer amorphous ribbons were prepared by single-roller spinning method. Two different amorphous ribbons can be layered together directly and bilayer amorphous ribbons can be obtained by the so-called double-nozzle melt spinning technique. The soft magnetic properties of the monolayer and bilayer ribbons were investigated. It is shown that the excellent synthetical magnetic properties can be obtained in the bilayer composite ribbons made of two type of materials with high permeability, low relaxation frequency and high relaxation frequency, moderate permeability respectively. This method is useful for the improvement of the synthetical magnetic properties in metallic soft magnetic materials.