Surface crystallization and magnetic properties of FeCuSiBNbMo melt-spun nanocrystalline alloys
Surface crystallization and magnetic properties of FeCuSiBNbMo melt-spun nanocrystalline alloys
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DOI：
10.1016/j.materresbull.2017.01.026
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发表时间：
2017-12
影响因子：
5.4
通讯作者：
F. Wan;Tao Liu;F. Kong;Anding Wang;Muqin Tian;Jiancheng Song;Jianhua Zhang;Chuntao Chang;Xin-min Wang
中科院分区：
文献类型：
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作者：
F. Wan;Tao Liu;F. Kong;Anding Wang;Muqin Tian;Jiancheng Song;Jianhua Zhang;Chuntao Chang;Xin-min Wang
Fe82Cu1Si4B11.5Nb1.5−xMox(x=0，0.75和1.5at.采用熔体旋压法制备了纳米晶合金，研究了Mo含量对合金热稳定性、软磁性能和组织演变的影响。研究发现，在低真空气氛下，Mo的加入可以提高非晶形成能力，抑制表面晶化，这可能是由于Mo具有更好的抗氧化性。在最佳的退火热处理条件下，所有合金均表现出优异的软磁性能，其矫顽力为8.9~10.8A/m，在1 kHz处的有效磁导率为11500~11900，饱和磁通密度为1.67~1.72T。此外，随着频率的增加，含Mo合金具有更好的暂态有效磁导率稳定性。降低旋压轮转速可以拓宽Fe82Cu1Si4B11.5Nb1.5薄带的退火温度范围。结果表明，这些软磁纳米晶材料具有良好的工业化生产可制造性。
Fe82Cu1Si4B11.5Nb1.5−xMox(x= 0, 0.75 and 1.5 at. %) nanocrystalline alloys were prepared using a melt-spinning technique and the effects of Mo content on thermal stability, soft magnetic properties and microstructure evolution were investigated. It was found that the Mo addition can improve the amorphous-forming ability and inhibit surface crystallization in a low vacuum atmosphere which may be due to better oxidative resistance. All the alloys exhibited excellent soft-magnetic properties with low coercivity of 8.9–10.8 A/m, high effective permeability of 11,500–11,900 at 1 kHz and high saturation magnetic flux density of 1.67–1.72 T after annealing at optimal annealing conditions. In addition, the alloys containing Mo have better transient effective permeability stability with increase in frequency. Decreasing the melt-spinning wheel speed can widen the annealing temperature range for Fe82Cu1Si4B11.5Nb1.5ribbon. Results indicate that these soft-magnetic nanocrystalline materials have good manufacturability for industrial production.