Soft magnetic properties and glass formability of Y–Fe–B–M bulk metals (M = Al, Hf, Nb, Ta, and Ti)
Soft magnetic properties and glass formability of Y–Fe–B–M bulk metals (M = Al, Hf, Nb, Ta, and Ti)
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DOI：
10.1016/j.jallcom.2008.05.014
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发表时间：
2009-03
影响因子：
6.2
通讯作者：
H. Chang;Yufen Huang;Chia-Chan Chang;C. Hsieh;W. Chang
中科院分区：
文献类型：
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作者：
H. Chang;Yufen Huang;Chia-Chan Chang;C. Hsieh;W. Chang
研究了Y-Fe-B-M（M=Al，Hf，Nb，Ta，Ti）块体合金的非晶成形性、磁性能和热稳定性。对于（Y0.06Fe0.72B0.22）98 M2系列合金，Al或Hf的添加会降低玻璃形成能力（GFA），但Nb或Ta的添加会将过冷区域从三元棒的50.2°C拓宽到M=Ta的61.5°C和M=Nb的62°C。可以获得直径达3 mm的块状玻璃棒。然而，它们的磁化强度和居里温度降低，由于磁稀释通过添加这些稀土元素。而对于Y_4Fe_（72）B_（22）M_2系合金，除Al外，几乎所有的替代元素都能提高合金棒的非晶形成能力，Ti或Hf替代的合金棒直径可达3 mm，Ta或Nb替代的合金棒直径可达4 mm。它是由过冷区进一步膨胀到70.4-84.2°C引起的。Y_4Fe_（72）B_（22）Ta_（22）非晶棒具有最佳的非晶形成能力和良好的软磁性能，σ_s= 123 emu/g，Hc=0.2Oe，TC=276°C。
The glass formability, magnetic properties and thermal stability of the Y–Fe–B–M bulk metals (M=Al, Hf, Nb, Ta, and Ti) alloys have been investigated. For (Y0.06Fe0.72B0.22)98M2series alloys, Al or Hf addition deteriorates the glass forming ability (GFA), but Nb or Ta addition broadens supercooled region from 50.2°C for ternary rod to 61.5°C for M=Ta and 62°C for M=Nb, respectively. The bulk glassy rod as large as 3mm in diameter can be obtained. However, their magnetization and Curie temperature are reduced due to the magnetic dilution by the addition of these nonmagnetic elements. On the other hand, for Y4Fe72B22M2series alloys, almost all the substitution elements, except Al, can improve GFA of alloy rod, making the diameter of bulk glassy rod as large as 3mm for Ti or Hf substitution and 4mm for Ta or Nb substitution, respectively. It is arisen from the further expansion of the supercooled region to 70.4–84.2°C. In this study, Y4Fe72B22Ta2amorphous rod displays the optimal glass forming ability and also good soft magnetic properties of σs=123emu/g, Hc=0.2Oe, and TC=276°C.