The Critical Materials Institute has developed a multi-pronged approach to finding substitutes for permanent magnets including materials discovery, application of advanced manufacturing methods and substitution at the system level to improve overall motor performance. An integrated computational experimental methodology for materials discovery allows for rapid screening of both intrinsic magnetization properties as well as quickly identifying those systems that can develop extrinsic coercivity required for a hard magnet. This effort has rapidly identified both high performance magnets with reduced RE content and RE-free magnets that exceed the performance of existing non-RE magnets. Alternatively, application of advance manufacturing methods such additive manufacturing, magnets can be fabricated into unique configurations that can concentrate flux not possible with conventionally processed magnets. When coupled with advanced motor design, overall motor performance can be improved with reduced magnet sizes and with significant less manufacturing scrap losses.

Accelerated development of substitutes for rare-earth permanent magnets

2019 Spring National Meeting

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