Upscaling of a strip-cast-process for HRE-lean magnet grades
Context and topic
Sintered Nd-Fe-B-type permanent magnets (PM) are essential components of electrical machines that require a high energy product/volume ratio for weight reduction and better reliability. However, to compensate the decrease in magnets coercivity with temperature, substitution of Nd by heavy rare earths (HRE) is widely used at industrial scale. This approach seriously increases the dependence on these critical raw materials in EU magnet industry.
UPGRADE aims at upscaling the Strip Casting process allowing to obtain alloys with refined microstructure for new permanent magnet (PM) grades designed for growing markets (automotive, electric power generators) with low content of critical raw materials (Tb, Dy). The refinement of the produced material flakes offers the production of sintered magnets of equal grades while saving material and process costs.
The UPGRADE project is funded by EIT RawMaterials.
01.01.2019 – 31.12.2021
- Commissariat à l’énergie atomique et aux énergies alternatives (CEA) – Coordinator
- Centro Ricerche Fiat S.C.p.A. (CRF C.R.F.)
Orbassano (TO), Italy
- Fraunhofer IWKS
- Less Common Metals Ltd.
Cheshire, United Kingdom
- Technical University Darmstadt, Department of Materials Science
- Vacuumschmelze GmbH & Co. KG