ULTRA-FAST CURRENT AIDED SINTERING OF HIGH COERCIVE MAGNETIC POWDERS AND COMPOSITES

被引：0
|
作者：
Granek, K. [1 ]
Ziolkowski, G. [1 ]
Chrobak, A. [1 ]
Klimontko, J. [1 ]
Rak, J. [2 ]
Zivotsky, O. [3 ]
Gembalova, L. [3 ]
机构：
[1] Univ Silesia, Inst Phys, 75 Pulku Piechoty 1A, PL-41500 Chorzow, Poland
[2] Univ Silesia, Inst Mat Sci, 75 Pulku Piechoty 1A, PL-41500 Chorzow, Poland
[3] VSB Tech Univ Ostrava, Dept Phys, 17 Listopadu 15-2172, Ostrava 70833, Czech Republic
来源：
ARCHIVES OF METALLURGY AND MATERIALS | 2019年 / 64卷 / 02期
关键词：
magnetic composites; ultra-fast current sintering; high coercive alloys; PERMANENT-MAGNETS; FE;
D O I：
10.24425/amm.2019.127615
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
The paper refers to pulverization and sintering of the (Fe80Nb6B14)(0.88)Tb-0.12 high coercive alloy. The powder was sintered using the ultra-fast current aided method. It turned out that too long discharge time leads to appearing of a soft magnetic phase and simultaneously, decrease in coercivity of the compacted powder. Nevertheless, it was possible to establish preference technology parameters, preserving magnetic hardness of the alloy. As a final test, an impact of Co-powder addition on magnetic properties was studied. The introduced soft magnetic phase (about 20 wt. %) caused about 30% increase of magnetic remanence, which is a result of direct exchange interactions between the two phases.
引用
收藏
页码：791 / 796
页数：6
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