THE CHARACTERIZATION OF GRINDED NDFEB MAGNETIC MATERIALS OBTAINED FROM ELECTRIC MOTORS

1 KAPUSTKA Katarzyna
Co-authors:
2 ZIEGMANN Gerhard 2 SDRENKA Sebastian 3 ELWERT Tobias 4 KLIMECKA-TATAR Dorota
Institutions:
1 University of Technology, Clausthal Centre of Material Technology, Agricolastraße 6, 38678 Clausthal-Zellerfeld, Germany, EU, German Federal Environmental Foundation, katarzyna.kapustka@tu-clausthal.de
2 University of Technology, Clausthal Centre of Material Technology, Agricolastraße 6, 38678 Clausthal-Zellerfeld, Germany, EU
3 University of Technology, Department of Mineral and Waste Processing, Walther-Nerst-Strasse 9, 38678 Clausthal-Zellerfeld, Germany, EU
4 Czestochowa University of Technology, Department of Production Engineering and Safety, ul. Armii Krajowej 19 B 42-200 Czestochowa, Poland, EU
Conference:
26th International Conference on Metallurgy and Materials, Hotel Voronez I, Brno, Czech Republic, EU, May 24th - 26th 2017
Proceedings:
Proceedings 26th International Conference on Metallurgy and Materials
Pages:
1757-1762
ISBN:
978-80-87294-79-6
ISSN:
2694-9296
Published:
9th January 2018
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
22 views / 3 downloads
Abstract

The hard magnetic materials play an important role in modern technology, e.g. automotive, electronics and many daily use equipment. The overview of statistics indicates that over the next few years the continuous increase of their consumption will be observed. Currently, China is the largest importer of rare earth elements, from which RE-M (rare earth elements, transition metal) magnets are produced. This situation is inconvenient for European countries because of their dependence on the largest producer. That aspect combined with high material and production costs makes the investigation into possibilities of effective recycling methods of hard magnets a research area of significant importance.In the paper the characteristic of magnetic composite material based of RE-M-B (rare earth elements, transition metal, boron) powder has been presented. For the research, the new magnetic material had been prepared from recycled hard magnetic elements (from electric motors) and the plastic as a binding material. The magnetic material characteristic includes, a brief outline of the recovery technology (treatment and processing of recycled permanent magnets) as well as a package of materials research analysis. The paper brings the opportunities to introduce the hard magnets recycling technology on an industrial scale.

Keywords: NdFeB magnets, recycling, rare earth elements
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