Fabrication of highly dense isotropic Nd-Fe-B nylon bonded magnets via extrusion-based additive manufacturing

dc.contributor.author Li, Ling
dc.contributor.author Jones, Kodey
dc.contributor.author Sales, Brian
dc.contributor.author Pries, Jason
dc.contributor.author Nlebedim, I. C.
dc.contributor.author Jin, Ke
dc.contributor.author Bei, Hongbin
dc.contributor.author Post, Brian
dc.contributor.author Kesler, Michael
dc.contributor.author Rios, Orlando
dc.contributor.author Kunc, Vlastimil
dc.contributor.author Fredette, Robert
dc.contributor.author Ormerod, John
dc.contributor.author Williams, Aaron
dc.contributor.author Lograsso, Thomas
dc.contributor.author Paranthaman, M. Parans
dc.contributor.department Ames National Laboratory
dc.contributor.department Materials Science and Engineering
dc.date 2019-09-18T05:28:38.000
dc.date.accessioned 2020-06-30T06:08:23Z
dc.date.available 2020-06-30T06:08:23Z
dc.date.copyright Mon Jan 01 00:00:00 UTC 2018
dc.date.embargo 2020-04-03
dc.date.issued 2018-05-01
dc.description.abstract <p>Magnetically isotropic bonded magnets with a high loading fraction of 70 vol.% Nd-Fe-B are fabricated via an extrusion-based additive manufacturing, or 3D printing system that enables rapid production of large parts. The density of the printed magnet is ∼ 5.2 g/cm3. The room temperature magnetic properties are: intrinsic coercivity Hci  = 8.9 kOe (708.2 kA/m), remanence Br  = 5.8 kG (0.58 T), and energy product (BH)max = 7.3 MGOe (58.1 kJ/m3). The as-printed magnets are then coated with two types of polymers, both of which improve the thermal stability as revealed by flux aging loss measurements. Tensile tests performed at 25 °C and 100 °C show that the ultimate tensile stress (UTS) increases with increasing loading fraction of the magnet powder, and decreases with increasing temperature. AC magnetic susceptibility and resistivity measurements show that the 3D printed Nd-Fe-B bonded magnets exhibit extremely low eddy current loss and high resistivity. Finally, we demonstrate the performance of the 3D printed magnets in a DC motor configuration via back electromotive force measurements.</p>
dc.description.comments <p>This is a manuscript of an article published as Li, Ling, Kodey Jones, Brian Sales, Jason L. Pries, I. C. Nlebedim, Ke Jin, Hongbin Bei, Brian K. Post, Michael S. Kesler, Orlando Rios, Vlastimil Kunc, Robert Fredette, John Ormerod, Aaron Williams, Thomas A. Lograsso, and M. Parans Paranthaman. "Fabrication of highly dense isotropic Nd-Fe-B nylon bonded magnets via extrusion-based additive manufacturing." <em>Additive Manufacturing</em> 21 (2018): 495-500. DOI: <a href="http://dx.doi.org/10.1016/j.addma.2018.04.001" target="_blank">10.1016/j.addma.2018.04.001</a>. Posted with permission.</p>
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dc.identifier archive/lib.dr.iastate.edu/mse_pubs/334/
dc.identifier.articleid 1337
dc.identifier.contextkey 14622469
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath mse_pubs/334
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/55678
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/mse_pubs/334/2018_LograssoThomas_FabricationHighlyDense.pdf|||Fri Jan 14 23:39:12 UTC 2022
dc.source.uri 10.1016/j.addma.2018.04.001
dc.subject.disciplines Manufacturing
dc.subject.disciplines Materials Science and Engineering
dc.subject.disciplines Mechanics of Materials
dc.subject.disciplines Polymer and Organic Materials
dc.subject.keywords big area additive manufacturing
dc.subject.keywords magnetic properties
dc.subject.keywords mechanical properties
dc.subject.keywords eddy current loss
dc.subject.keywords high resistivity
dc.title Fabrication of highly dense isotropic Nd-Fe-B nylon bonded magnets via extrusion-based additive manufacturing
dc.type article
dc.type.genre article
dspace.entity.type Publication
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relation.isOrgUnitOfPublication 25913818-6714-4be5-89a6-f70c8facdf7e
relation.isOrgUnitOfPublication bf9f7e3e-25bd-44d3-b49c-ed98372dee5e
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