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利用球磨纳米晶Fe73.5Cu1Nb3Si13.5B9合金得到的粉末压制成磁粉芯 ,研究其磁性。结果表明 ,在测量的频率范围内( 1kHz～ 10 0kHz) ,该粉芯的磁导率几乎不随频率变化而变化 ;粉芯的品质因数Q随频率的增加而增加 ,在较高频率时有着比坡莫合金粉芯还要高的值 ,具有应用价值。推导出磁粉芯的静态磁导率的表达式 ,发现磁粉芯的磁导率与磁粉芯的密度有着密切的关系 ,密度愈大 ,磁粉芯的静态磁导率愈高
The powder obtained by milling the nanocrystalline Fe73.5Cu1Nb3Si13.5B9 alloy was pressed into a magnetic powder core to study its magnetism. The results show that in the frequency range of measurement (1kHz ~ 10 0kHz), the permeability of the powder core almost does not change with the frequency; the quality factor of the powder core Q increases with increasing frequency, at higher frequencies there is a ratio Permalloy powder core also high value, with application value. Derived magnetic powder core static permeability expression and found that the magnetic powder core permeability and magnetic powder core density is closely related to the greater the density, magnetic powder core static permeability higher