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

Ling Li; Angelica Tirado; B. S. Conner; Miaofang Chi; Amy M. Elliott; Orlando Rios; Haidong Zhou; M. Parans Paranthaman

doi:10.1016/j.jmmm.2017.04.066

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

Ling Li, Angelica Tirado, B. S. Conner, Miaofang Chi, Amy M. Elliott, Orlando Rios, Haidong Zhou, M. Parans Paranthaman

Research output: Contribution to journal › Article › peer-review

71 Scopus citations

Abstract

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., Nd₃Cu_0.25Co_0.75 (NdCuCo) and Pr₃Cu_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.

Original language	English
Pages (from-to)	163-167
Number of pages	5
Journal	Journal of Magnetism and Magnetic Materials
Volume	438
DOIs	https://doi.org/10.1016/j.jmmm.2017.04.066
State	Published - Sep 15 2017

Funding

This work was supported by the Critical Material Institute, an Energy Innovation Hub funded by the U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy, Advanced Manufacturing Office. The TEM research was supported by the Center for Nanophase Materials Sciences (CNMS), which is sponsored by the Scientific User Facilities Division of the U.S. Department of Energy (DOE), office of Basic Energy Sciences (BES). L. L. acknowledges Dr. Michael A McGuire for helpful discussions, and Dr. Zhiqian Sun and Dr. Tianyi Chen for helping with the SEM experiments.

Funders	Funder number
Center for Nanophase Materials Sciences
Critical Material Institute
U.S. Department of Energy
Advanced Manufacturing Office
Office of Energy Efficiency and Renewable Energy
Basic Energy Sciences

Keywords

Additive manufacturing
Bonded magnets
Coercivity
Infiltration
NdFeB

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.jmmm.2017.04.066

Cite this

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title = "A novel method combining additive manufacturing and alloy infiltration for NdFeB bonded magnet fabrication",

abstract = "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.",

keywords = "Additive manufacturing, Bonded magnets, Coercivity, Infiltration, NdFeB",

author = "Ling Li and Angelica Tirado and Conner, {B. S.} and Miaofang Chi and Elliott, {Amy M.} and Orlando Rios and Haidong Zhou and Paranthaman, {M. Parans}",

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T1 - A novel method combining additive manufacturing and alloy infiltration for NdFeB bonded magnet fabrication

AU - Li, Ling

AU - Tirado, Angelica

AU - Conner, B. S.

AU - Chi, Miaofang

AU - Elliott, Amy M.

AU - Rios, Orlando

AU - Zhou, Haidong

AU - Paranthaman, M. Parans

PY - 2017/9/15

Y1 - 2017/9/15

N2 - 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.

AB - 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.

KW - Additive manufacturing

KW - Bonded magnets

KW - Coercivity

KW - Infiltration

KW - NdFeB

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SN - 0304-8853

VL - 438

SP - 163

EP - 167

JO - Journal of Magnetism and Magnetic Materials

JF - Journal of Magnetism and Magnetic Materials

ER -

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

Abstract

Funding

Keywords

UN SDGs

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