Additive manufacturing of anisotropic hybrid NdFeB-SmFeN nylon composite bonded magnets

Gandha, Kinjal; Li, Ling; Nlebedim, I. C.; Post, Brian K.; Kunc, Vlastimil; Sales, Brian C.; Bell, James; Paranthaman, M. Parans

doi:10.1016/j.jmmm.2018.07.021

Title: Additive manufacturing of anisotropic hybrid NdFeB-SmFeN nylon composite bonded magnets

Journal Article · Mon Jul 09 00:00:00 EDT 2018 · Journal of Magnetism and Magnetic Materials

DOI:https://doi.org/10.1016/j.jmmm.2018.07.021· OSTI ID:1467597

Gandha, Kinjal ^[1]; Li, Ling ^[2]; Nlebedim, I. C. ^[1];

^[2];

^[2]; Bell, James ^[3];

^[2]

Ames Lab., Ames, IA (United States)
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
MagnetoDynamics, LLC, Pittsburgh, PA (United States)

In this work, we demonstrate a novel method of extrusion-based 3D printing additive manufacturing of bonded magnets comprising 65 vol% anisotropic composite powders of Dy-free magfine Nd-Fe-B and Sm-Fe-N in nylon. The 3D printing was performed using a big area additive manufacturing (BAAM) process. The effects of various post-printing alignment with different magnetic field intensities and temperatures on the properties of the anisotropic bonded Nd-Fe-B + Sm-Fe-N composite magnets were investigated. Remanence increases with alignment magnetic field leading to an increase in energy product, (BH)max. For anisotropic Nd-Fe-B + Sm-Fe-N composite bonded magnets with a 65 vol% loading fraction, (BH)max of up to 11.3 MGOe are obtained. In addition, the magnetic properties of the bonded magnets can be tuned through the post-printing alignment of anisotropic particles in different directions without impairing the original shape-changing effect. This technique shows great promise for producing anisotropic bonded magnets with enhanced magnetic properties.

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Research Organization:: Ames Lab., Ames, IA (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

Sponsoring Organization:: USDOE Office of Energy Efficiency and Renewable Energy (EERE)

Grant/Contract Number:: AC02-07CH11358; AC05-00OR22725

OSTI ID:: 1467597

Alternate ID(s):: OSTI ID: 1474847; OSTI ID: 1543037

Report Number(s):: IS-J-9740; PII: S0304885318310886

Journal Information:: Journal of Magnetism and Magnetic Materials, Vol. 467, Issue C; ISSN 0304-8853

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 43 works

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3D Printing of Magnetoresponsive Polymeric Materials with Tunable Mechanical and Magnetic Properties by Digital Light Processing Lantean, Simone; Barrera, Gabriele; Pirri, Candido Fabrizio Advanced Materials Technologies, Vol. 4, Issue 11 https://doi.org/10.1002/admt.201900505	journal	August 2019
Production of complex shape magnets using additive manufacturing: A state-of-the-art analysis Silva, Thiago Felipe Vieira; Stoppa, Marcelo Henrique Journal of Thermoplastic Composite Materials https://doi.org/10.1177/0892705719886894	journal	November 2019
Development and Characterization of Stable Polymer Formulations for Manufacturing Magnetic Composites Nagarajan, Balakrishnan; Kamkar, Milad; Schoen, Martin A. W. Journal of Manufacturing and Materials Processing, Vol. 4, Issue 1 https://doi.org/10.3390/jmmp4010004	journal	January 2020

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