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Title: A novel method combining additive manufacturing and alloy infiltration for NdFeB bonded magnet fabrication

In this paper, binder jetting additive manufacturing technique is employed to fabricate NdFeB isotropic bonded magnets, followed by an infiltration process with low-melting point eutectic alloys [i.e., Nd 3Cu 0.25Co 0.75 (NdCuCo) and Pr 3Cu 0.25Co 0.75 (PrCuCo)]. Densification and mechanical strength improvement are achieved for the as-printed porous part. Meanwhile, the intrinsic coercivity H ci is enhanced from 732 to 1345 kA/m and 1233 kA/m after diffusion of NdCuCo and PrCuCo, respectively. This study presents a novel method for fabricating complex-shaped bonded magnets with promising mechanical and magnetic properties.
Authors:
 [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [2] ;  [1]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  2. Univ. of Tennessee, Knoxville, TN (United States)
Publication Date:
Grant/Contract Number:
AC05-00OR22725
Type:
Accepted Manuscript
Journal Name:
Journal of Magnetism and Magnetic Materials
Additional Journal Information:
Journal Volume: 438; Journal Issue: 4; Journal ID: ISSN 0304-8853
Publisher:
Elsevier
Research Org:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Critical Materials Institute (CMI)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE
OSTI Identifier:
1360048
Alternate Identifier(s):
OSTI ID: 1396922

Li, Ling, Tirado, Angelica, Conner, Benjamin S., Elliott, Amy M., Rios, Orlando, Zhou, Haidong, and Paranthaman, M. Parans. A novel method combining additive manufacturing and alloy infiltration for NdFeB bonded magnet fabrication. United States: N. p., Web. doi:10.1016/j.jmmm.2017.04.066.
Li, Ling, Tirado, Angelica, Conner, Benjamin S., Elliott, Amy M., Rios, Orlando, Zhou, Haidong, & Paranthaman, M. Parans. A novel method combining additive manufacturing and alloy infiltration for NdFeB bonded magnet fabrication. United States. doi:10.1016/j.jmmm.2017.04.066.
Li, Ling, Tirado, Angelica, Conner, Benjamin S., Elliott, Amy M., Rios, Orlando, Zhou, Haidong, and Paranthaman, M. Parans. 2017. "A novel method combining additive manufacturing and alloy infiltration for NdFeB bonded magnet fabrication". United States. doi:10.1016/j.jmmm.2017.04.066. https://www.osti.gov/servlets/purl/1360048.
@article{osti_1360048,
title = {A novel method combining additive manufacturing and alloy infiltration for NdFeB bonded magnet fabrication},
author = {Li, Ling and Tirado, Angelica and Conner, Benjamin S. and Elliott, Amy M. and Rios, Orlando and Zhou, Haidong and Paranthaman, M. Parans},
abstractNote = {In this paper, binder jetting additive manufacturing technique is employed to fabricate NdFeB isotropic bonded magnets, followed by an infiltration process with low-melting point eutectic alloys [i.e., Nd3Cu0.25Co0.75 (NdCuCo) and Pr3Cu0.25Co0.75 (PrCuCo)]. Densification and mechanical strength improvement are achieved for the as-printed porous part. Meanwhile, the intrinsic coercivity Hci is enhanced from 732 to 1345 kA/m and 1233 kA/m after diffusion of NdCuCo and PrCuCo, respectively. This study presents a novel method for fabricating complex-shaped bonded magnets with promising mechanical and magnetic properties.},
doi = {10.1016/j.jmmm.2017.04.066},
journal = {Journal of Magnetism and Magnetic Materials},
number = 4,
volume = 438,
place = {United States},
year = {2017},
month = {4}
}