Publication Date

11-20-2018

Department

Ames Laboratory

Campus Units

Ames Laboratory

OSTI ID+

1483407

Report Number

IS-J 9810

DOI

10.1007/s11837-018-3242-0

Journal Title

JOM: Journal of the Minerals, Metals and Materials Society

Volume Number

71

Issue Number

2

First Page

626

Last Page

632

Abstract

Additive manufacturing techniques for fabricating bonded magnets have the potential to reduce manufacturing cost and time-to-market of products and address the criticality of rare-earth elements (REEs), which is a concern for economic design of dependent applications such as permanent magnet machines. We investigated the magnetic alignment of anisotropic bonded magnet material comprising 65 vol.% Nd-Fe-B in nylon-12 produced by extrusion in a 20-W brushless direct current surface permanent magnet motor for submersible water pump application using finite element analysis. The results predict that sufficient alignment for this application could be obtained at low alignment fields (μ0H ≤ 1 T) with a reduction in the volume of critical materials by up to 40% compared with isotropic permanent magnets. This demonstrates the economic feasibility of incorporating a magnetic alignment field source into additive manufacturing systems for bonded magnets, and the potential of aligned anisotropic bonded magnets to address REE criticality.

DOE Contract Number(s)

AC02-07CH11358; AC05-00OR22725; AC52-07NA27344

Language

en

Department of Energy Subject Categories

36 MATERIALS SCIENCE

Publisher

Iowa State University Digital Repository, Ames IA (United States)

Available for download on Friday, November 20, 2020

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