New Fe-based bulk glassy alloys with high saturated magnetic flux density of 1.4–1.5 T
New Fe-based bulk glassy alloys with high saturated magnetic flux density of 1.4–1.5 T
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DOI：
10.1016/j.msea.2003.10.058
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发表时间：
2004-07
期刊：
影响因子：
6.4
通讯作者：
A. Inoue;B. Shen
中科院分区：
文献类型：
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作者：
A. Inoue;B. Shen
在（Fe0.75B0.15Si0.1）100−xMx（M=Nb或Zr; 2-4at.%）中合成了具有高饱和磁通密度（Bs）的新型铁基大块非晶合金Nb或1at.% Zr）系统通过铜模铸造。添加这样少量的Nb或Zr导致在结晶之前出现玻璃化转变和过冷液体区域。玻璃化转变温度（Tg）和晶化温度（Tx）随着Nb含量的增加而增加，其中Tx的增加比T的增加更为显著，在4at.%时，ΔTx（=Tx-Tg）最大值为50 K NB.液相线温度（T1）也随Nb含量和4at.% Nb合金具有最低的Tl 1374 K。4at.%时，玻璃化转变温度（Tg/T1）最高，为0.61 Nb合金。铸态非晶合金棒的最大直径为2%Nb合金的1 mm和4at.%的1.5mm。Nb合金。含Nb和Zr的块体非晶合金具有良好的软磁性能，在1 kHz下，Bs为1.40-1.53T，矫顽力为2.8-3.7A/m，磁导率为14，400 - 17，300。同时具有高玻璃形成能力、大的过冷液相区和最低的Tlas以及高B_3的软磁性能的新型Fe基非晶合金的成功合成，使我们对作为新型软磁材料的未来发展充满期待。
New Fe-based bulk glassy alloys with high saturated magnetic flux density (Bs) were synthesized in (Fe0.75B0.15Si0.1)100−xMx(M=Nb or Zr; 2–4at.% Nb or 1at.% Zr) systems by copper mold casting. The addition of such small amounts of Nb or Zr causes the appearance of the glass transition and supercooled liquid region before crystallization. The glass transition temperature (Tg) and crystallization temperature (Tx) increased with increasing Nb content and the more significant increase in Txas compared with Tgresulted in a maximum ΔTx(=Tx−Tg) value of 50K at 4at.% Nb. The liquidus temperature (Tl) also shows a significant change with Nb content and the 4at.% Nb alloy shows the lowest Tlof 1374K. The highest Tg/Tlof 0.61 was obtained for the 4at.% Nb alloy. The maximum diameter of the cast glassy alloy rod was 1 mm for the 2% Nb alloy and 1.5mm for the 4at.% Nb alloy. The Nb- and Zr-containing bulk glassy alloys exhibit good soft magnetic properties of 1.40–1.53T for Bs, 2.8–3.7A/m for coercive force and 14,400–17,300 for permeability at 1kHz. The success of synthesizing the new Fe-based glassy alloys exhibiting simultaneously high glass-forming ability, a large supercooled liquid region and the lowest Tlas well as good soft magnetic properties combined with high Bsallows us to expect future progress as a new type of soft magnetic material.