Additive manufacturing of anisotropic hybrid NdFeB-SmFeN nylon composite bonded magnets

被引：72

作者：

Gandha, Kinjal ^{[1
]}

Li, Ling ^{[2
]}

Nlebedim, I. C. ^{[1
]}

Post, Brian K. ^{[2
]}

Kunc, Vlastimil ^{[2
]}

Sales, Brian C. ^{[2
]}

Bell, James ^{[3
]}

Paranthaman, M. Parans ^{[2
]}

机构：

[1] Ames Lab, Ames, IA 50011 USA

[2] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA

[3] MagnetoDynam LLC, Pittsburgh, PA 15241 USA

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2018年 / 467卷

关键词：

SM2FE17N3; POWDERS; NITROGEN-CONTENT; HIGHLY DENSE; FABRICATION; COERCIVITY; DEPENDENCE; ALIGNMENT; FIELD; SIZE;

D O I：

10.1016/j.jmmm.2018.07.021

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this work, we demonstrate a novel method of extrusion-based 3D printing additive manufacturing of bonded magnets comprising 65 vol% anisotropic composite powders of Dy-free magfine Nd-Fe-B and Sm-Fe-N in nylon. The 3D printing was performed using a big area additive manufacturing (BAAM) process. The effects of various post-printing alignment with different magnetic field intensities and temperatures on the properties of the anisotropic bonded Nd-Fe-B + Sm-Fe-N composite magnets were investigated. Remanence increases with alignment magnetic field leading to an increase in energy product, (BH)(max). For anisotropic Nd-Fe-B + Sm-FeN composite bonded magnets with a 65 vol% loading fraction, (BH)(max )of up to 11.3 MGOe are obtained. In addition, the magnetic properties of the bonded magnets can be tuned through the post-printing alignment of anisotropic particles in different directions without impairing the original shape-changing effect. This technique shows great promise for producing anisotropic bonded magnets with enhanced magnetic properties.

引用

页码：8 / 13

页数：6

共 24 条

[1] Additive Manufacturing of Bonded Nd-Fe-B-Effect of Process Parameters on Magnetic Properties [J].