中国物理B ›› 2023, Vol. 32 ›› Issue (8): 88102-088102.doi: 10.1088/1674-1056/acd525

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Effects of Cu and Co additions on the crystallization and magnetic properties of FeNbB alloy

Wan-Qiu Yu(于万秋), Bo Tian(田博), Ping-Li Zhang(张平丽), Jia-Hui Wang(王佳慧), and Zhong Hua(华中)   

  1. College of Physics, Jilin Normal University, Siping 136000, China
  • 收稿日期:2023-03-07 修回日期:2023-04-23 接受日期:2023-05-12 发布日期:2023-07-24
  • 通讯作者: Wan-Qiu Yu E-mail:yuwanqiu2004@126.com
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No.21905110), the Natural Science Foundation of Jilin Province of China(Grant No.YDZJ202201ZYTS319), and the Sinoma Institute of Materials Research Co., Ltd. of Guangzhou Province of China.

Effects of Cu and Co additions on the crystallization and magnetic properties of FeNbB alloy

Wan-Qiu Yu(于万秋), Bo Tian(田博), Ping-Li Zhang(张平丽), Jia-Hui Wang(王佳慧), and Zhong Hua(华中)   

  1. College of Physics, Jilin Normal University, Siping 136000, China
  • Received:2023-03-07 Revised:2023-04-23 Accepted:2023-05-12 Published:2023-07-24
  • Contact: Wan-Qiu Yu E-mail:yuwanqiu2004@126.com
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No.21905110), the Natural Science Foundation of Jilin Province of China(Grant No.YDZJ202201ZYTS319), and the Sinoma Institute of Materials Research Co., Ltd. of Guangzhou Province of China.

摘要: The nanocrystalline-forming element Cu and magnetic element Co are commonly used as additive elements to tune the structure and improve the properties of alloys. In this study, four kinds of amorphous alloys, Fe72Nb12B16, Fe72Nb12B15Cu1, Fe36Co36Nb12B16, and Fe36Co36Nb12B15Cu1, were prepared by melt-spinning and annealed at various temperatures to investigate the effects of Cu and Co additions, individually and in combination, on the crystallization and magnetic properties of Fe72Nb12B16 alloy. The four kinds of alloys exhibited different crystallization behaviors with different primary crystallization phases observed. For the Fe72Nb12B16 alloy, only the α-Mn-type metastable phase formed after annealing. The addition of 1 at.% Cu and 36 at.% Co led to the observation of the α-Mn-type and β-Mn-type metastable phases, respectively, and a reduction in the crystallization volume fraction in the metastable phase. The Fe36Co36Nb12B15Cu1 alloy only exhibited α-Fe(Co) phase as a primary phase, and the addition of both Cu and Co completely inhibited the precipitation of the metastable phase. Cu clusters were found in energy dispersive spectroscopy elemental maps. Compared with other alloys, Fe36Co36Nb12B15Cu1 alloy with both Cu and Co exhibited a lower coercivity (Hc) below 973 K.

关键词: alloys, nanocrystalline, Cu addition, Co addition

Abstract: The nanocrystalline-forming element Cu and magnetic element Co are commonly used as additive elements to tune the structure and improve the properties of alloys. In this study, four kinds of amorphous alloys, Fe72Nb12B16, Fe72Nb12B15Cu1, Fe36Co36Nb12B16, and Fe36Co36Nb12B15Cu1, were prepared by melt-spinning and annealed at various temperatures to investigate the effects of Cu and Co additions, individually and in combination, on the crystallization and magnetic properties of Fe72Nb12B16 alloy. The four kinds of alloys exhibited different crystallization behaviors with different primary crystallization phases observed. For the Fe72Nb12B16 alloy, only the α-Mn-type metastable phase formed after annealing. The addition of 1 at.% Cu and 36 at.% Co led to the observation of the α-Mn-type and β-Mn-type metastable phases, respectively, and a reduction in the crystallization volume fraction in the metastable phase. The Fe36Co36Nb12B15Cu1 alloy only exhibited α-Fe(Co) phase as a primary phase, and the addition of both Cu and Co completely inhibited the precipitation of the metastable phase. Cu clusters were found in energy dispersive spectroscopy elemental maps. Compared with other alloys, Fe36Co36Nb12B15Cu1 alloy with both Cu and Co exhibited a lower coercivity (Hc) below 973 K.

Key words: alloys, nanocrystalline, Cu addition, Co addition

中图分类号:  (Nanoscale materials and structures: fabrication and characterization)

  • 81.07.-b