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.
机构:
Indian Inst Technol, Dept Met & Mat Engn, Kharagpur 721302, W Bengal, IndiaIndian Inst Technol, Dept Met & Mat Engn, Kharagpur 721302, W Bengal, India
Oraon, A.
Adhikary, T.
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Indian Inst Technol, Dept Met & Mat Engn, Kharagpur 721302, W Bengal, IndiaIndian Inst Technol, Dept Met & Mat Engn, Kharagpur 721302, W Bengal, India
Adhikary, T.
Das, G. P.
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Indian Inst Technol, Dept Met & Mat Engn, Kharagpur 721302, W Bengal, IndiaIndian Inst Technol, Dept Met & Mat Engn, Kharagpur 721302, W Bengal, India
Das, G. P.
Ghosh, S.
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Indian Inst Technol, Dept Met & Mat Engn, Kharagpur 721302, W Bengal, IndiaIndian Inst Technol, Dept Met & Mat Engn, Kharagpur 721302, W Bengal, India
Ghosh, S.
Garg, A.
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Indian Inst Technol, Dept Mat Sci & Engn, Kanpur 208016, Uttar Pradesh, IndiaIndian Inst Technol, Dept Met & Mat Engn, Kharagpur 721302, W Bengal, India
Garg, A.
Raja, A.
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Indian Inst Technol, Dept Met & Mat Engn, Kharagpur 721302, W Bengal, IndiaIndian Inst Technol, Dept Met & Mat Engn, Kharagpur 721302, W Bengal, India
Raja, A.
Aich, S.
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Indian Inst Technol, Dept Met & Mat Engn, Kharagpur 721302, W Bengal, IndiaIndian Inst Technol, Dept Met & Mat Engn, Kharagpur 721302, W Bengal, India