The influence of carbon and oxygen on the magnetic characteristics of press-less sintered NdFeB magnets

Abstract

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Recycling of Waste NdFeB Magnets by Supergravity-enhanced Impurity Removal

“…The presence of TO content exerts a deleterious effect on the magnetic properties of NdFeB materials, necessitating strict control over its content during the manufacture of NdFeB magnets. 16,23) Through supergravity purification, the levels of TO present in waste NdFeB magnets became notably low, enabling their reuse as raw materials for the production of new NdFeB magnets. This, in turn, has the potential to significantly decrease the amount of virgin materials required and mitigate the risks of environmental pollution.…”