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Title: Direct-write 3D printing of NdFeB bonded magnets

Abstract

We report a method to fabricate Nd-Fe-B bonded magnets of complex shape via extrusion-based additive manufacturing (AM), also known as 3D-printing. We have successfully formulated a 3D-printable epoxy-based ink for direct-write AM with anisotropic MQA NdFeB magnet particles that can be deposited at room temperature. The new feedstocks contain up to 40 vol.% MQA anisotropic Nd-Fe-B magnet particles, and they are shown to remain uniformly dispersed in the thermoset matrix throughout the deposition process. Ring, bar, and horseshoe-type 3D magnet structures were printed and cured in air at 100°C without degrading the magnetic properties. Lastly, this study provides a new pathway for fabricating Nd-Fe-B bonded magnets with complex geometry at low temperature, and presents new opportunities for fabricating multifunctional hybrid structures and devices.

Authors:
 [1];  [2];  [1];  [3];  [4];  [1];  [5];  [2]
  1. Univ. of Tennessee, Knoxville, TN (United States). Dept. of Mechanical, Aerospace, and Biomedical Engineering
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Chemical Sciences Division
  3. Univ. of Tennessee, Knoxville, TN (United States). Dept. of Materials Science and Engineering
  4. Ames Lab., Ames, IA (United States). Critical Materials Inst.
  5. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Materials Science & Technology Division
Publication Date:
Research Org.:
Ames Lab., Ames, IA (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Energy Efficiency Office. Advanced Manufacturing Office
OSTI Identifier:
1342934
Alternate Identifier(s):
OSTI ID: 1408633
Report Number(s):
IS-J-9070
Journal ID: ISSN 1042-6914
Grant/Contract Number:  
AC05-00OR22725
Resource Type:
Accepted Manuscript
Journal Name:
Materials and Manufacturing Processes
Additional Journal Information:
Journal Volume: 33; Journal Issue: 1; Conference: Direct-write 3D printing of NdFeB bonded magnets; Journal ID: ISSN 1042-6914
Publisher:
Taylor & Francis
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 3D printing; bonded magnets; direct-write; magnetic properties; NdFeB

Citation Formats

Compton, Brett Gibson, Kemp, James William, Novikov, Timofei V., Pack, Robert Cody, Nlebedim, Cajetan I., Duty, Chad Edward, Rios, Orlando, and Paranthaman, M. Parans. Direct-write 3D printing of NdFeB bonded magnets. United States: N. p., 2016. Web. doi:10.1080/10426914.2016.1221097.
Compton, Brett Gibson, Kemp, James William, Novikov, Timofei V., Pack, Robert Cody, Nlebedim, Cajetan I., Duty, Chad Edward, Rios, Orlando, & Paranthaman, M. Parans. Direct-write 3D printing of NdFeB bonded magnets. United States. https://doi.org/10.1080/10426914.2016.1221097
Compton, Brett Gibson, Kemp, James William, Novikov, Timofei V., Pack, Robert Cody, Nlebedim, Cajetan I., Duty, Chad Edward, Rios, Orlando, and Paranthaman, M. Parans. Wed . "Direct-write 3D printing of NdFeB bonded magnets". United States. https://doi.org/10.1080/10426914.2016.1221097. https://www.osti.gov/servlets/purl/1342934.
@article{osti_1342934,
title = {Direct-write 3D printing of NdFeB bonded magnets},
author = {Compton, Brett Gibson and Kemp, James William and Novikov, Timofei V. and Pack, Robert Cody and Nlebedim, Cajetan I. and Duty, Chad Edward and Rios, Orlando and Paranthaman, M. Parans},
abstractNote = {We report a method to fabricate Nd-Fe-B bonded magnets of complex shape via extrusion-based additive manufacturing (AM), also known as 3D-printing. We have successfully formulated a 3D-printable epoxy-based ink for direct-write AM with anisotropic MQA NdFeB magnet particles that can be deposited at room temperature. The new feedstocks contain up to 40 vol.% MQA anisotropic Nd-Fe-B magnet particles, and they are shown to remain uniformly dispersed in the thermoset matrix throughout the deposition process. Ring, bar, and horseshoe-type 3D magnet structures were printed and cured in air at 100°C without degrading the magnetic properties. Lastly, this study provides a new pathway for fabricating Nd-Fe-B bonded magnets with complex geometry at low temperature, and presents new opportunities for fabricating multifunctional hybrid structures and devices.},
doi = {10.1080/10426914.2016.1221097},
journal = {Materials and Manufacturing Processes},
number = 1,
volume = 33,
place = {United States},
year = {Wed Aug 17 00:00:00 EDT 2016},
month = {Wed Aug 17 00:00:00 EDT 2016}
}

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