Low Hydrogen Pressure Induced High Anisotropy in HDDR-Treated Nd13Fe75Co4B8 Powders

Guang Bing Han; Shuang Fu

doi:10.4028/www.scientific.net/AMR.602-604.161

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 602-604Low Hydrogen Pressure Induced High Anisotropy in...

Low Hydrogen Pressure Induced High Anisotropy in HDDR-Treated Nd₁₃Fe₇₅Co₄B₈ Powders

Abstract:

High anisotropic Nd13Fe75Co4B8 magnetic powders are obtained with low desorption H2-pressure of the hydrogenation disproportionation desorption recombination (HDDR) process. Scanning electron microscopy (SEM) indicates a lamella structure in the 20 kPa desorption H2-pressure HDDR products and may be related to the high anisotropy. The magnetic powders with a desorption H2-pressure of 20 kPa have the magnetic properties of Br =0.86 T and Mr/Ms =0.81.This shows that the H2-pressure has great effect on the formation of crystal texture in the HDDR Nd-Fe-B powders.

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Advanced Materials Research (Volumes 602-604)

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161-164

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https://doi.org/10.4028/www.scientific.net/AMR.602-604.161

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December 2012

Authors:

Guang Bing Han, Shuang Fu

Keywords:

Anisotropy, HDDR Magnetic Powder, Hydrogen Pressure, SC Alloy Flakes

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