Magnetic and microstructural evolution of Nd-Fe-B processed via HDDR (hydrogenation-disproportionation-desorption-recombination) and Melt-Spinning sintered by SPS (spark plasma sintering)

Author

Engerroff, J.A. ; Justo, L.H. ; Lopes, L.U. ; Wendhausen, P.A. ; Keller, F.O. ; Junior, N.V.

Author_Institution

Mech. Eng., Fed. Univ. of Santa Catarina, Florianopolis, Brazil

fYear

2015

fDate

11-15 May 2015

Firstpage

1

Lastpage

1

Abstract

This research aims to examine the possibility of sintering Nd-Fe-B nanocrystalline powders treated by HDDR and melt-spinning through spark plasma sintering. These sintered magnets are evaluated based on their magnetic properties and microstructural characteristics. High grain growth is observed in the nanocrystalline powders which directly affects their remanence, maximum energy product, and coercivity.

Keywords

boron alloys; coercive force; desorption; grain growth; hydrogenation; iron alloys; magnetic particles; melt spinning; nanofabrication; nanomagnetics; nanoparticles; neodymium alloys; plasma materials processing; remanence; sintering; NdFeB; coercivity; grain growth; hydrogenation-disproportionation-desorption-recombination processes; magnetic properties; maximum energy product; melt-spinning; microstructural characteristics; nanocrystalline powders; remanence; spark plasma sintering; Coercive force; Perpendicular magnetic anisotropy; Plasmas; Powders; Remanence; Sparks;

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.2015.7157721

Filename

7157721