摘要
本文报道了新开发的纳米晶Ｆｅ７４Ｃｕ１Ｎｂ１Ｍｏ２Ｓｉ１３Ｂ９合金的综合磁性能。无磁场最佳退火后，直流磁性能达到下列水平：Ｂ８０＝１．１７Ｔ，Ｂ８＝１．０９Ｔ，Ｂｒ＝０．５４Ｔ，Ｈｃ＝０．８Ａ／ｍ，μｉ＝１３．１８×１０４，μｍ＝３１×１０４。典型高频铁损达到下列水平：Ｐ５／２０ｋ＝１３５ｋＷ·Ｍ－３，Ｐ２／１００ｋ＝３３０ｋＷ·Ｍ－３，Ｐ１／２００ｋ＝２７３ｋＷ·Ｍ－３，Ｐ０．５／７００ｋ＝５９８ｋＷ·ｍ－３，Ｐ０．２／１０００ｋ＝１８６ｋＷ·Ｍ－３。在宽的频率及幅值磁通密度范围内，对铁损进行了分析，给出了几个近似表达式，可用来粗略地估算铁损。简单地叙述了在较大输出功率的开关电源中试用情况。
The synthetical magnetic properties of the new developed nanocrystalline Fe_74Cu_1Nb_1Mo_2Si_13B_9 alloy are reported.The levels of d.c.magnetic properties of the new alloy annealed without magnetic field are as follows:B 80 =1 17T,B 8=1 09T,B r=0 54T,H c=0 8A/m,μi=13 18×10 4,μm=31×10 4.The lebels of the typical high-frequency core losses with unit of kW\5m -3 are as follows:P 5/20k =135,P 2/100k =330,P 1/200k =273,P 0.5/700k =598,P 0 2/1000k =186.The analyses of core losses have been made in the wide ranges of frequency and amplitude flux density,thus giving several approximate expressions,which can be used for estimating core losses.The new alloy has also been given a trial in switching mode power supply with larger output power.
出处
《金属功能材料》
CAS
1998年第1期15-17,共3页
Metallic Functional Materials
关键词
纳米晶合金
起始磁导率
铁损
开关电源
软磁合金
nanocrystalline alloy,relative initial permeability,core loss,switching mode power supply
