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Low Melting-point Diffusion Salts of Heavy Rare-earth for Enhancing Coercivity of Grain-boundary-diffusion-processed Nd-Fe-B-type Magnet
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논문 기본 정보

Type
Academic journal
Author
J. Y. Choi (Pukyong National University) H. W. Kwon (Pukyong National University) B. A. Kim (Pukyong National University) J. G. Lee (Korea Institute of Materials Science)
Journal
The Korean Magnetics Society Journal of Magnetics Vol.25 No.2 KCI Accredited Journals SCIE
Published
2020.6
Pages
205 - 209 (5page)
DOI
10.4283/JMAG.2020.25.2.205

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Low Melting-point Diffusion Salts of Heavy Rare-earth for Enhancing Coercivity of Grain-boundary-diffusion-processed Nd-Fe-B-type Magnet
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Research history (2)

2020

Low melting-point diffusion salts of heavy rare-earth for enhancing coercivity of grain-boundarydiffusion-processed Nd-Fe-B-type magnet
J. Y. Choi ,  H. W. Kwon ,  B. A. Kim and others 2 한국자기학회 학술연구발표회 논문개요집 2020.07 Proceeding
Low Melting-point Diffusion Salts of Heavy Rare-earth for Enhancing Coercivity of Grain-boundary-diffusion-processed Nd-Fe-B-type Magnet
J. Y. Choi ,  H. W. Kwon ,  B. A. Kim and others 1 Journal of Magnetics 2020.06 Academic journal
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Abstract· Keywords

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Effective low melting-point Dy-diffusion for grain boundary diffusion treatment for enhancing coercivity in Nd-Fe-B-type magnet was found in the DyF₃-LiF binary system. Efficacy of the low melting-point (DyF₃-LiF) diffusion source as Dy-diffusion source for enhancing coercivity in the diffusion processed Nd-Fe-B-type magnet was investigated. Speedier and more profound coercivity enhancement in the Nd-Fe-B-type magnet was achieved by grain boundary diffusion using the low melting-point (DyF₃-LiF) diffusion source with respect to solid DyF₃ single salt. Since the liquid in the (DyF₃-LiF) mixture contained plenty of Dy atoms already freed from DyF₃ and they were in better contact with magnet, speedier and profuse diffusion of Dy atoms through Nd-rich grain boundary was possible in the magnet coated with low melting-point (DyF₃-LiF) diffusion source.
#Nd-Fe-B magnet #grain boundary diffusion #liquid diffusion source

Contents

1. Introduction
2. Experimentals
3. Results and Discussion
4. Conclusion
References

References (13)

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K. Hirota / 2006 / IEEE Trans. Magn 42:2909 google schola K. Löewe / 2015 / Acta Mater 83:248 google schola U. M. R. Seelam / 2014 / J. Alloys Compd 617:884 google schola K. H. Bae / 2013 / IEEE Trans. Magn 49:3251 google schola N. Oono / 2011 / J. Magn. Magn. Mater 323:297 google schola

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