Preparation of highly textured hydrogenation-disproportionation-desorption-recombination powders for Nd-Fe-B sintered magnets

Author

Zhang, Y. ; Liu, T. ; Han, J. ; Zhou, L. ; Liu, S. ; Zhang, X. ; Yang, J. ; Yang, Y.

Author_Institution

Sch. of Phys., Peking Univ., Beijing, China

fYear

2015

fDate

11-15 May 2015

Firstpage

1

Lastpage

1

Abstract

Highly textured HDDR Nd-Fe-B powders with uniform thin Nd-rich grain boundary layers are prepared in this article. Microstructure and crystal texture of the powders are analyzed using XRD and SEM. It is found that the sample sintered at 1020 shows a remanence of 13 kGs, and a maximum energy product of 39 MGOe. However, the coercivity is merely 10 kOe which is due to grain growth during sintering.

Keywords

X-ray diffraction; boron alloys; coercive force; crystal structure; desorption; grain boundaries; grain growth; hydrogenation; iron alloys; magnetic particles; neodymium alloys; remanence; scanning electron microscopy; sintering; texture; NdFeB; SEM; XRD; coercivity; crystal texture; grain boundary; grain growth; highly textured hydrogenation-disproportionation-desorption-recombination powders; maximum energy product; microstructure; remanence; sintering; Coercive force; Grain boundaries; Perpendicular magnetic anisotropy; Powders; Strips;

fLanguage

English

Publisher

ieee

Conference_Titel

Magnetics Conference (INTERMAG), 2015 IEEE

Conference_Location

Beijing

Print_ISBN

978-1-4799-7321-7

Type

conf

DOI

10.1109/INTMAG.2015.7156663

Filename

7156663