A Comparative Thermomagnetic Study of Melt-spun Nd-Fe-B Alloys with Different Nd Content

被引：2
|
作者：
Grujic, A. [1 ]
Zak, T. [2 ]
Talijan, N. [1 ]
Stajic-Trosic, J. [1 ]
Cosovic, V. [1 ]
机构：
[1] Inst Chem Technol & Met, Dept Met & Mat, Belgrade 11000, Serbia
[2] Inst Phys Mat AS CR, Brno, Czech Republic
来源：
SCIENCE OF SINTERING | 2009年 / 41卷 / 03期
关键词：
Nd-Fe-B alloys; Thermomagnetic measurements; Phase composition; Structure; Magnetic properties; MAGNETIC-PROPERTIES; PERMANENT-MAGNETS; PHASE; MICROSTRUCTURE; SUBSTITUTION; MOSSBAUER;
D O I：
10.2298/SOS0903337G
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Changes in the phase composition and magnetic properties of three types of commercial Nd-Fe-B alloys with different Nd content - low (10-12 wt%), near stoichiometric (21-25 wt%) and rich (26-29 wt%) caused by thermomagnetic analysis (TM) were observed in regard to optimal magnetic state. Phase compositions of investigated alloys before and after TM measurement up to 800 degrees C were compared using Fe-57 Mossbauer spectroscopy and X-Ray analysis. The TM measurements decompose all three materials and the main products of decomposition process alpha-Fe and Fe2B phase. Observed changes in structure and phase composition had direct influence on magnetic properties. Loss of magnetic properties induced by thermal decomposition is clearly illustrated on corresponding SQUID hysteresis loops.
引用
收藏
页码：337 / 345
页数：9
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