3D printing of anisotropic Sm–Fe–N nylon bonded permanent magnets

Gandha, Kinjal; Paranthaman, M. P.; Sales, Brian C.; Wang, Haobo; Dalagan, Adrian; Lamichhane, Tej N.; Parker, David S.; Nlebedim, Ikenna C.

doi:10.1002/eng2.12478

Title: 3D printing of anisotropic Sm–Fe–N nylon bonded permanent magnets

Journal Article · 17 November 2021 · Engineering Reports

DOI: https://doi.org/10.1002/eng2.12478 · OSTI ID:1831290

^[1];

^[2]; Sales, Brian C. ^[2]; Wang, Haobo ^[3]; Dalagan, Adrian ^[2]; Lamichhane, Tej N. ^[2]; Parker, David S. ^[2]; Nlebedim, Ikenna C. ^[1]

Ames Lab., Ames, IA (United States). Critical Materials Inst.
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Univ. of Tennessee, Knoxville, TN (United States). Bredesen Center for Interdisciplinary Research and Graduate Education

Fabricating a bonded magnet with a near-net shape in suitable thermoplastic polymer binders is of paramount importance in the development of cost-effective energy technologies. In this work, anisotropic Sm₂Fe₁₇N₃ (Sm–Fe–N) bonded magnets are additively printed using SmFeN anisotropic magnetic particles in a polymeric binder polyamide-12 (PA12). The anisotropic SmFeN bonded magnets are fabricated by Big Area Additive Manufacturing followed by post-printing alignment in a magnetic field. Optimal post-alignment results in an enhanced remanence of ~0.68 T in PA12 reflected in a parallel-oriented (aligned) measured direction. The maximum energy product achieved for the additively printed anisotropic bonded magnet of Sm–Fe–N in PA12 polymer is 78.8 KJ m^-3. Our results show advanced processing flexibility with 3D printing of the development of SmFeN nylon bonded magnets designed for applications with no critical rare earth magnets.

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

Sponsoring Organization:: USDOE Office of Energy Efficiency and Renewable Energy (EERE), Renewable Power Office. Wind Energy Technologies Office; USDOE Office of Energy Efficiency and Renewable Energy (EERE), Energy Efficiency Office. Advanced Manufacturing Office; USDOE

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

OSTI ID:: 1831290

Alternate ID(s):: OSTI ID: 1827091; OSTI ID: 1831292; OSTI ID: 1833002; OSTI ID: 1883677; OSTI ID: 1994746

Report Number(s):: IS-J-10,660; IS-J-10,600

Journal Information:: Engineering Reports, Vol. 3, Issue 12; ISSN 2577-8196

Publisher:: WileyCopyright Statement

Country of Publication:: United States

Language:: English

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42 ENGINEERING
additive manufacturing or 3D printing
magnetic properties
mechanical properties
SmFeN nylon bonded permanent magnets
SmFeN Nylon bonded permanent magnets

Title: 3D printing of anisotropic Sm–Fe–N nylon bonded permanent magnets

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