Soft magnetic Fe-Si-B-Cu nanocrystalline alloys with high Cu concentrations

被引:56
|
作者
Li, Yanhui [1 ]
Jia, Xingjie [1 ]
Xu, Yongqiang [1 ]
Chang, Chuntao [2 ]
Xie, Guoqiang [3 ]
Zhang, Wei [1 ]
机构
[1] Dalian Univ Technol, Sch Mat Sci & Engn, Key Lab Solidificat Control & Digital Preparat Te, Dalian 116024, Peoples R China
[2] Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Ningbo 315201, Zhejiang, Peoples R China
[3] Tohoku Univ, Grad Sch Biomed Engn, Sendai, Miyagi 9808575, Japan
基金
中国国家自然科学基金;
关键词
Fe-based nanocrystalline materials; Soft magnetic properties; Cu content; alpha-Fe nuclei; Manufacturability; COERCIVITY;
D O I
10.1016/j.jallcom.2017.06.128
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
High saturation magnetic flux density (B-s) soft magnetic nanocrystalline alloys with good manufacturability were developed in a simple Fe-Si-B-Cu alloy system with high Cu concentrations. The nanocrystalline alloys with high Bs of similar to 1.77 T and low coercivity of similar to 7.1 A m were obtained by annealing the melt-spun Fe-Si-B-Cu alloys containing 1.7-2.0 at% Cu. The high content of Cu facilitates the formation of high-number-density alpha-Fe nuclei with an average grain size of similar to 6 nm pre-existing in the amorphous matrix, which inhibits the excessive growth of the alpha-Fe grains by their competitive growth even during the low-heating-rate annealing, resulting in a fine nanostructure and excellent soft magnetic properties. (C) 2017 Elsevier B.V. All rights reserved.
引用
收藏
页码:859 / 863
页数:5
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