Microstructure and coercivity of grain boundary diffusion processed Dy-free and Dy-containing NdFeB sintered magnets

TH Kim, TT Sasaki, T Ohkubo, Y Takada, A Kato… - Acta Materialia, 2019 - Elsevier
Dy distributions in Dy-free and Dy-containing Ndsingle bondFesingle bond B sintered
magnets in the course of the Dy-vapor grain boundary diffusion (GBD) process have been …

Simultaneous application of Dy–X (X= F or H) powder do** and dip-coating processes to Nd–Fe–B sintered magnets

TH Kim, SR Lee, HJ Kim, MW Lee, TS Jang - Acta Materialia, 2015 - Elsevier
We investigated the microstructural and magnetic property changes of Nd–Fe–B sintered
magnets with the application of simultaneous processing via powder do** and dip …

Faceted shell structure in grain boundary diffusion-processed sintered Nd–Fe–B magnets

T Ohkubo, T Abe, S Hirosawa, K Hono - Journal of alloys and compounds, 2014 - Elsevier
Dysprosium enriched shell structure formed by the grain boundary diffusion process (GBDP)
of a sintered Nd–Fe–B magnet was characterized by using scanning electron microscopy …

Effective microstructure optimization and coercivity enhancement of sintered Nd–Fe–B magnet by grain boundary diffusion of Pr60Tb13Al27 alloy

L **, G Ding, J Zhu, Z **, B Zheng, S Guo… - Journal of Alloys and …, 2021 - Elsevier
Abstract Commercial sintered Nd-Fe-B magnet was grain boundary diffusion (GBD)
processed by Pr 60 Tb 13 Al 27 and Tb 73 Al 27 alloys. Although the Tb content is only 13 …

Experimental and computational analysis of magnetization reversal in (Nd, Dy)-Fe-B core shell sintered magnets

T Helbig, K Loewe, S Sawatzki, M Yi, BX Xu… - Acta Materialia, 2017 - Elsevier
Abstract (Nd, Dy)-Fe-B core shell model magnets were prepared by co-sintering Nd-Fe-B
and (Nd, Dy)-Fe-B powders. The Nd-Fe-B core and partially Dy substituted ie (Nd, Dy)-Fe-B …

Coercivity enhancement of sintered Nd–Fe–B magnets by efficiently diffusing DyF3 based on electrophoretic deposition

XJ Cao, L Chen, S Guo, XB Li, PP Yi, AR Yan… - Journal of Alloys and …, 2015 - Elsevier
Using electrophoretic deposition (EPD) method, we coated DyF 3 powder onto the sintered
Nd–Fe–B magnets, investigated the changes in magnetic and microstructural properties of …

Coercivity enhancements of Nd–Fe–B sintered magnets by diffusing DyHx along different axes

T Ma, X Wang, X Liu, C Wu, M Yan - Journal of Physics D …, 2015 - iopscience.iop.org
Diffusing heavy rare earth elements along the grain boundaries (GBs) for Nd 2 Fe 14 B-type
sintered magnets serves as an effective method to enhance coercivity and to minimize …

Micromagnetic simulation of anisotropic grain boundary diffusion for sintered Nd-Fe-B magnets

W Li, Q Zhou, LZ Zhao, QX Wang, XC Zhong… - Journal of Magnetism …, 2018 - Elsevier
A systematic investigation on the anisotropic grain boundary diffusion in sintered Nd-Fe-B
magnets is carried out by micromagnetic simulation. The results indicate that the critical …

Effect of oxygen content of Nd–Fe–B sintered magnet on grain boundary diffusion process of DyH2 dip-coating

KH Bae, SR Lee, HJ Kim, MW Lee… - Journal of Applied Physics, 2015 - pubs.aip.org
We investigated the effect of oxygen content on the microstructural and magnetic properties
of a DyH 2 dip-coated Nd–Fe–B sintered magnet. When the magnet had a low oxygen …

Coercivity and thermal stability improvement in sintered Nd–Fe–B permanent magnets by intergranular addition of Dy–Mn alloy

X Li, S Liu, X Cao, B Zhou, L Chen, A Yan… - Journal of Magnetism and …, 2016 - Elsevier
To increase coercivity and thermal stability of sintered Nd–Fe–B magnets for high
temperature applications, Dy 88 Mn 12 (wt%) alloy powders were intergranular added into …