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Ames Laboratory Publications

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Big Area Additive Manufacturing Of High Performance Bonded Ndfeb Magnets, Li Ling, Angelica Tirado, I. C. Nlebedim, Orlando Rios, Brian Post, Vlastimil Kunc, R. R. Lowden, Edgar Lara-Curzio, Magnet Applications, Inc., Thomas A. Lograsso, M. Parans Paranthaman Oct 2016

Big Area Additive Manufacturing Of High Performance Bonded Ndfeb Magnets, Li Ling, Angelica Tirado, I. C. Nlebedim, Orlando Rios, Brian Post, Vlastimil Kunc, R. R. Lowden, Edgar Lara-Curzio, Magnet Applications, Inc., Thomas A. Lograsso, M. Parans Paranthaman

Ames Laboratory Publications

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 properties comparable or better than those of traditional injection molded magnets. The starting polymer magnet composite pellets consist of 65 vol% isotropic NdFeB powder and 35 vol% polyamide (Nylon-12). The density of the final BAAM magnet product reached 4.8 g/cm3, and the room temperature magnetic properties ...