| 摘要 |
A nanocrystallised tape-wound core without a localised airgap, consisting of a nanocrystalline material with the following atomic composition: [Fe<SUB>1-a</SUB>Ni<SUB>a</SUB>] 100xyzabetagammaCu<SUB>x</SUB>Si<SUB>y</SUB>B<SUB>z</SUB>Nb<SUB>a</SUB>M'<SUB>beta</SUB>M''<SUB>gamma</SUB>, wherein a<=0.3, 0.6<=x<=1.5, 10<=y<=17, 5<=z<=14, 2<=a<=6, beta<=7, gamma<=8, M' is at least one of the elements V, Cr, Al and Zn, M'' is at least one of the elements C, Ge, P, Ga, Sb, In and Be, with a permeability mu of 200 to 4000, a saturation of more than 1 T, an induction range, in which the permeability does not vary by more than 5%, of more than 0.9 T, a remanent induction of less than 0.02 T and a cut-off frequency higher than 1 MHz, such that mu varies by less than 1% when the core is aged for 100 h at more than 100° C., mu varies by less than 5% when the core is coated, mu varies by less than 15% when the temperature is in the range of -25° C. and +60° C., and by less than 25% when the temperature is in the range of -40° C. and +120° C., and mu varies in a monotonic and substantially linear manner with a temperature of -40° C. to +120° C.
|
