Bulk Nanocrystalline Permanent Magnets by Selective Laser Melting

被引：0
|
作者：
Trauter, F. [1 ]
Schanz, J. [2 ]
Riegel, H. [2 ]
Bernthaler, T. [1 ]
Goll, D. [1 ]
Schneider, G. [1 ]
机构：
[1] Hochschule Aalen, Institut für Materialforschung (IMFAA), Aalen, Germany
[2] Hochschule Aalen, Laserapplikationszentrum (LAZ), Aalen, Germany
来源：
Practical Metallography | 2021年 / 58卷 / 10期
关键词：
Additives - Coercive force - Iron alloys - Melting - Microstructure - Nanocrystalline alloys - Nanocrystals - Neodymium alloys - Selective laser melting - Titanium alloys;
D O I：
10.1515/PM-2021-0055
中图分类号：
学科分类号：
摘要：
Fe-Nd-B powders were processed by additive manufacturing using laboratory scale selective laser melting to produce bulk nanocrystalline permanent magnets. The manufacturing process was carried out in a specially developed process chamber under Ar atmosphere. This resulted in novel types of microstructures with micrometer scale clusters of nanocrystalline hard magnetic grains. Owing to this microstructure, a maximum coercive field strength (coercivity) µ0Hc of 1.16 T, a remanence Jr of 0.58 T, and a maximum energy product (BH)max of 62.3 kJ/mm3 could, for example, be obtained for the composition Nd16.5-Pr1.5-Zr2.6-Ti2.5-Co2.2-Fe65.9-B8.8. © 2021 Walter de Gruyter GmbH.
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页码：630 / 643
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