Recycling of bonded NdFeB permanent magnets using ionic liquids
نویسندگان
چکیده
منابع مشابه
Big Area Additive Manufacturing of High Performance Bonded NdFeB Magnets
Additive manufacturing allows for the production of complex parts with minimum material waste, offering an effective technique for fabricating permanent magnets which frequently involve critical rare earth elements. In this report, we demonstrate a novel method - Big Area Additive Manufacturing (BAAM) - to fabricate isotropic near-net-shape NdFeB bonded magnets with magnetic and mechanical prop...
متن کاملExtraction and separation of neodymium and dysprosium from used NdFeB magnets: an application of ionic liquids in solvent extraction towards the recycling of magnets
A procedure for the efficient extraction and separation of rare earths and other valuable elements from used NdFeB permanent magnets is presented. In a first step, an iron free leachate is prepared from an used magnet using nitric acid. Cobalt is separated through a liquid–liquid extraction in aqueous nitrate media using as organic phase the ionic liquid trihexyl(tetradecyl)phosphonium nitrate ...
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The relaxation of the magnetization is calculated for isotropic and anisotropic magnets. For NdFeB magnets, the dependence of Sv on texture, above room temperature, is roughly consistent with the model, while the NdDyFeB magnets show no dependence upon texture.
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This paper focuses on wire electrical discharge machining (WEDM) of devices made from commercially available sintered neodymium-iron-boron (NdFeB) rare-earth magnets that have been magnetized before machining. We conduct an experimental study to quantify the effects of the voltage and capacitance of an RC-type WEDM machine, as well as the magnet polarity, on slicing rate, mean kerf, and variati...
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The microstructure of Nd15Fe7,B8 in the optimum magnetic state is compared to that of overquenched and heat treated specimens using Field Ion Microscopy (FIM) and Atom Probe (AP) techniques. Apart from the hard magnetic Nd2FeI4B ( (P ) and the nonmagnetic Nd,,,Fe4B4 ( 11 ) a metastable Nd7Fe3 phase controls the magnetic properties of melt-spun NdFeB ribbons. Furthermore the influence of a parti...
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ژورنال
عنوان ژورنال: Green Chemistry
سال: 2020
ISSN: 1463-9262,1463-9270
DOI: 10.1039/d0gc00647e