Authors:
Seyyed Morteza Javid (national research council, Canada)
Robyn Iannitto (national research council, Canada)
Gaofeng Li (national research council, Canada)
Abdullah Khalil (national research council, Canada)
Pedro Guerra Demingos (University of Toronto, Canada)
Chandra Veer Singh (University of Toronto, Canada)
Fabrice Bernier (national research council, Canada)
Jean-Michel Lamarre (national research council, Canada)
Shirley Mercier (national research council, Canada)
Nicolas Cormier (national research council, Canada)
Louis-Philippe Lefebvre (national research council, Canada)
Ali Asgarian (national research council, Canada)
Abstract:
Recycling end-of-life magnets offers a sustainable solution to the growing demand for rare-earth (RE) permanent magnets, essential for clean energy, electric vehicles, and advanced technologies. Emerging additive manufacturing (AM) techniques such as laser powder bed fusion (LPBF) for producing new magnets from recycled materials requires feedstock with specific morphologies, such as spherical shapes, to ensure the uniform printing bed and high performance of fabricated parts. Thermal plasma, specifically radio frequency inductively coupled plasma (RF-ICP), provides an environmentally friendly method for recycling neodymium magnets (Nd2Fe14B or NdFeB) and spheroidizing NdFeB powder, minimizing contamination and harmful emissions. A key challenge is the separation of magnetic and non-magnetic phases at high temperatures. This study combines experimental and numerical approaches to investigate NdFeB powder behavior during the RF-ICP process. This dual approach enhances process control and provides insights for optimizing recycled NdFeB powder production, supporting the development of sustainable materials for clean energy applications.
DOI:
https://doi.org/10.59499/EP256696362
