Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5490421 | Journal of Magnetism and Magnetic Materials | 2017 | 18 Pages |
Abstract
A Hydrogen Decrepitation Press-Less Process (HD-PLP) recycling method for recycling of anisotropic NdFeB magnets is demonstrated. The method combines hydrogen decrepitation (HD) disintegration of the initial magnet, powder sieving and the Press-Less Process (PLP), where hydride powder is sintered in a graphite mold. Coercivities up to 534 kA/m were obtained in porous samples based on powder size d <  100 µm. Adding a ball milling step resulted in full density isotropic magnets for d >  100 µm. The coercivity reached Hci = 957 kA/m being 86% of the original N48M material without addition of rare earth elements.
Keywords
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
Manlong Xia, Asger B. Abrahamsen, Christian R.H. Bahl, Badrinath Veluri, Allan I. Søegaard, Poul Bøjsøe,