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Title: Low-Field Alignment of Anisotropic Bonded Magnets for Additive Manufacturing of Permanent Magnet Motors

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 (μoH ≤ 1 T) with a reduction in the volume of critical materials by up to 40% compared with isotropic permanent magnets. Furthermore, 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.

Authors:
 [1];  [2];  [2];  [3];  [1];  [1]
  1. Ames Lab., Ames, IA (United States)
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  3. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Publication Date:
Research Org.:
Ames Laboratory (AMES), Ames, IA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1483407
Report Number(s):
IS-J-9810
Journal ID: ISSN 1047-4838; PII: 3242
Grant/Contract Number:  
AC02-07CH11358; AC05-00OR22725; AC52-07NA27344
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
JOM. Journal of the Minerals, Metals & Materials Society
Additional Journal Information:
Journal Name: JOM. Journal of the Minerals, Metals & Materials Society; Journal ID: ISSN 1047-4838
Publisher:
Springer
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Khazdozian, Helena A., Li, Ling, Paranthaman, M. Parans, McCall, Scott K., Kramer, Matthew J., and Nlebedim, Ikenna C. Low-Field Alignment of Anisotropic Bonded Magnets for Additive Manufacturing of Permanent Magnet Motors. United States: N. p., 2018. Web. doi:10.1007/s11837-018-3242-0.
Khazdozian, Helena A., Li, Ling, Paranthaman, M. Parans, McCall, Scott K., Kramer, Matthew J., & Nlebedim, Ikenna C. Low-Field Alignment of Anisotropic Bonded Magnets for Additive Manufacturing of Permanent Magnet Motors. United States. doi:10.1007/s11837-018-3242-0.
Khazdozian, Helena A., Li, Ling, Paranthaman, M. Parans, McCall, Scott K., Kramer, Matthew J., and Nlebedim, Ikenna C. Tue . "Low-Field Alignment of Anisotropic Bonded Magnets for Additive Manufacturing of Permanent Magnet Motors". United States. doi:10.1007/s11837-018-3242-0.
@article{osti_1483407,
title = {Low-Field Alignment of Anisotropic Bonded Magnets for Additive Manufacturing of Permanent Magnet Motors},
author = {Khazdozian, Helena A. and Li, Ling and Paranthaman, M. Parans and McCall, Scott K. and Kramer, Matthew J. and Nlebedim, Ikenna C.},
abstractNote = {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 (μoH ≤ 1 T) with a reduction in the volume of critical materials by up to 40% compared with isotropic permanent magnets. Furthermore, 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.},
doi = {10.1007/s11837-018-3242-0},
journal = {JOM. Journal of the Minerals, Metals & Materials Society},
number = ,
volume = ,
place = {United States},
year = {Tue Nov 20 00:00:00 EST 2018},
month = {Tue Nov 20 00:00:00 EST 2018}
}

Journal Article:
Free Publicly Available Full Text
This content will become publicly available on November 20, 2019
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