Title :
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
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;
Conference_Titel :
Magnetics Conference (INTERMAG), 2015 IEEE
Conference_Location :
Beijing
Print_ISBN :
978-1-4799-7321-7
DOI :
10.1109/INTMAG.2015.7157721
