Title :
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
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;
Conference_Titel :
Magnetics Conference (INTERMAG), 2015 IEEE
Conference_Location :
Beijing
Print_ISBN :
978-1-4799-7321-7
DOI :
10.1109/INTMAG.2015.7156663
