Seminar: Additive manufacturing of high performance permanent magnets

About the event

Dr. Parans Paranthaman, Chemical Sciences Division, Oak Ridge National Laboratory

The main goal of this research is to print near-net shape NdFeB bonded magnets and to minimize the generated waste and possibly reduce the cost. China holds 90 percent of the world’s supply of rare earth elements, which underscores the need to conserve this resource through more efficient manufacturing. One of the ways in which we can achieve this goal is by using extrusion based big area additive manufacturing technique to create complex shapes and geometries of polymer bonded magnets from a computer aided design which requires no tooling. We have successfully demonstrated the fabrication of near-net shape magnets with complex shapes and high energy product using over 70 vol% of NdFeB in nylon polymer composite magnets. A higher energy product of 13 MGOe have been obtained for 70 vol% anisotropic critical rare earth free composite bonded magnets. We will discuss in detail about our recent success with demonstration of the use of BAAM isotropic NdFeB magnets in all 3D printed motor. This research was supported by the Critical Materials Institute, an Energy Innovation Hub funded by the U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy, Advanced Manufacturing Office.