The relationship between the crystallization process and the soft magnetic properties of nanocrystalline Fe–M–B–Cu (M=Zr, Nb) alloy
The relationship between the crystallization process and the soft magnetic properties of nanocrystalline Fe–M–B–Cu (M=Zr, Nb) alloy
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DOI：
10.1063/1.365508
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发表时间：
1997-04
影响因子：
3.2
通讯作者：
T. Bitoh;A. Makino;T. Hatanai;A. Inoue;T. Masumoto
中科院分区：
文献类型：
--
作者：
T. Bitoh;A. Makino;T. Hatanai;A. Inoue;T. Masumoto
研究了纳米晶Fe_（84）Nb_（3.5）Zr_（3.5）B_8Cu_（1）合金的晶化过程与软磁性能的关系，并与Fe_（73.5）Si_（13.5）B_9Nb_（3.5）Cu_（1）合金的晶化过程进行了对比。当退火温度Ta略高于晶化温度时，Fe-Nb-Zr-B-Cu只有经过很短时间的退火才能获得高导磁率。Fe-Nb-Zr-B-Cu体系矫顽力的Ta依赖性不能用bcc相晶粒尺寸的变化来解释。Fe-Nb-Zr-B-Cu合金的软磁性能不仅与晶粒尺寸有关，而且与晶间非晶相的居里温度有关。结果表明，Fe-Nb-Zr-B-Cu的磁性与表观各向异性的降低程度直接相关，而Fe-Si-B-Nb-Cu的磁性则受bcc相中Si含量的影响。
The relationship between the crystallization process and the soft magnetic properties of nanocrystalline Fe84Nb3.5Zr3.5B8Cu1 alloy has been studied by comparison with that of Fe73.5Si13.5B9Nb3Cu1 alloy. When the annealing temperature Ta is slightly above the crystallization temperature, high permeability can only be obtained for Fe–Nb–Zr–B–Cu after annealing for very short times. The Ta dependence of the coercive force of Fe–Nb–Zr–B–Cu cannot be explained by the change of the grain size of the bcc phase. The soft magnetic properties of Fe–Nb–Zr–B–Cu is dominated by not only the grain size but also the Curie temperature of the intergranular amorphous phase. It is concluded that the magnetic softness of Fe–Nb–Zr–B–Cu is related directly to the degree of the reduction in the apparent anisotropy, while that of Fe–Si–B–Nb–Cu is strongly affected by the Si content of the bcc phase.