Glass-Forming Ability and Magnetization of (Fe, Co)-B-Si-(Nb, RE) (RE = Nd, Sm, Dy) Amorphous Alloys
Glass-Forming Ability and Magnetization of (Fe, Co)-B-Si-(Nb, RE) (RE = Nd, Sm, Dy) Amorphous Alloys
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DOI：
10.2497/jjspm.65.395
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发表时间：
2018-07
期刊：
影响因子：
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通讯作者：
Keita Moriya;T. Bitoh
中科院分区：
文献类型：
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作者：
Keita Moriya;T. Bitoh
研究了稀土元素（RE = Nd、Sm或Dy）替代Nb对（Fe 1− y Co y）79 B 17 Si 1 Nb 3− x RE x（y = 0、0.2、0.4）合金非晶形成能力和磁化强度的影响。无稀土的快淬合金没有出现玻璃化转变，不能得到单一的非晶结构。相反，在某些含Dy的合金中证实了玻璃转变，并得到了单一非晶相的合金。Sm取代Nb后，合金中出现了单一的非晶相。然而，只有一种组合物（y = 0和3原子% Sm）显示玻璃化转变。另一方面，一些含钕的合金也表现出玻璃化转变，但没有得到具有单一非晶结构的样品。这些结果表明Dy的取代对提高GFA最有效。当Nb被Nd或Sm取代时，质量磁化强度（σ s）趋于增加。另一方面，Dy的取代明显降低了σ s。这是由于（Fe，Co）和RE元素之间的磁耦合特性造成的。
The effect of the replacement of Nb by rare earth elements (RE = Nd, Sm or Dy) on glass-forming ability (GFA) and the magnetization of (Fe 1− y Co y ) 79 B 17 Si 1 Nb 3− x RE x ( y = 0, 0.2, 0.4) alloys has been investigated. The RE-free melt-spun alloys do not show a glass transition and could not be obtained a single amorphous structure. On the contrary, the glass transition was confirmed in some Dy-contained alloys, and the alloys with the single amorphous phase have been obtained. In the alloys in which Nb is substituted with Sm, the alloys with a single amorphous phase were obtained. However, there is only one composition ( y = 0 and 3 at% Sm) showing the glass transition. On the other hand, some Nd-contained alloys also exhibit the glass transition; however, the specimen with the single amorphous structure has not been obtained. These results indicate that the substitution of Dy is most effective to improve GFA. When Nb is substituted with Nd or Sm, the mass magnetization ( σ s ) tends to increase. On the other hand, the substitution with Dy obviously reduces σ s . These are due to the magnetic coupling properties between (Fe, Co) and RE elements.