The FeSiAl magnetic powder core was prepared from crushed FeSiAl alloy powder,which was chemically insulated by adjusting the amount of phosphoric acid and introducing Zn2+.FESEM,XRD,synchronous thermal analyzer,B-H analyzer and other testing equipment were used to characterize powder surface morphology,phase,thermal stability or test magnetic powder core electromagnetic performance.The results show that the introduction of Zn2+can effectively improve the microstructure of the insulating layer on the surface of FeSiAl particle.The formed insulating layer is composed of nano scale reticulated crystalline phosphate,which is densely and evenly distributed on the powder surface.It can effectively reduce the power loss of the magnetic powder core and improve the magnetic permeability.The insulating layer formed is composed of nano scale reticulated crystalline phosphate,which is densely and evenly distributed on the particle surface.It can effectively reduce the power loss of the magnetic particle core and improve the magnetic permeability.
关键词
铁硅铝/磁粉心/绝缘包覆/锌系磷化/功率损耗
Key words
FeSiAl/magnetic powder core/insulation coating/zinc phosphating/power loss
维普
万方数据