Effect of B addition on the microstructure and magnetic properties of melt-spun Sm12Co60-xFe19Cu6Zr3Bx (0 ≤ x ≤ 3) ribbons

被引：11
|
作者：
Sun, Ji-Bing [1 ]
Javed, A. [2 ]
Zhang, Zhe-Xu [1 ]
Cui, Chun-Xiang [1 ]
Zhang, Miao-Xin [1 ]
Han, Rui-Ping [1 ]
机构：
[1] Hebei Univ Technol, Sch Mat Sci & Engn, Tianjin 300130, Peoples R China
[2] Univ Sheffield, Dept Mat Engn, Sheffield S1 3JD, S Yorkshire, England
来源：
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS | 2010年 / 167卷 / 02期
关键词：
Rapid solidification; Magnetic measurements; Phase transitions; Sm-Co; Magnetic properties; SINTERED MAGNETS; COERCIVITY; PHASE; CU; TEMPERATURE; ALLOY;
D O I：
10.1016/j.mseb.2010.01.053
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The melt-spun Sm12Co60-xFe19Cu6Zr3Bx (0 <= x <= 3) ribbons were prepared using arc-melting method at a wheel speed of 20 m/s followed by annealing at different temperatures. The structural characterization showed that Sm12Co60-xFe19Cu6Zr3Bx (0 <= x <= 3) ribbons were mainly composed of TbCu7-type phase and alpha-Fe phase. The alpha-Fe phase in melt-spun ribbons was increased and the glass-forming ability (GFA) of Sm-Co matrix alloys was improved with the addition of B. The TbCu7-type phase in the ribbons annealed over 700 degrees C for 10 min was observed to decompose into Th2Zn17, CaCu5 and alpha-Fe type phases. The addition of higher B content resulted in decomposition of TbCu7-type phase more easily. Both coercivity and remanence were significantly affected by the B addition and annealing temperature. The Curie temperatures of amorphous Sm-Co phase, Sm(Co,M)(5) and Sm-2(Co,M)(17) were found between 445 degrees C and 484 degrees C, 684 degrees C and 714 degrees C and 840 degrees C and 854 degrees C, respectively. (C) 2010 Elsevier B.V. All rights reserved.
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页码：102 / 106
页数：5
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