Effect of Fe-Mn addition on microstructure and magnetic properties of NdFeB magnetic powders

In this paper, the effect of Fe-Mn alloy addition on microstructures and magnetic properties of NdFeB magnetic powders was investigated. Varied Fe-Mn compositions of 1, 5, and 10 wt% were mixed with commercial NdFeB type MQA powders for 15 minutes using shaker mill. The characterizations were perfor...

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Bibliographic Details
Published in:Journal of physics. Conference series 2018-03, Vol.985 (1), p.12044
Main Authors: Kurniawan, C, Purba, A S, Setiadi, E A, Simbolon, S, Warman, A, Sebayang, P
Format: Article
Language:English
Subjects:
Coercivity
Composition
Density
Ferrous alloys
Magnetic properties
Magnetism
Manganese
Microstructure
Particle size
Particle size distribution
Physics
Remanence
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Summary:In this paper, the effect of Fe-Mn alloy addition on microstructures and magnetic properties of NdFeB magnetic powders was investigated. Varied Fe-Mn compositions of 1, 5, and 10 wt% were mixed with commercial NdFeB type MQA powders for 15 minutes using shaker mill. The characterizations were performed by powder density, PSA, XRD, SEM, and VSM. The Fe-Mn addition increased the powder density of NdFeB/Fe-Mn powders. On the other side, particle size distribution slightly decreased as the Fe-Mn composition increases. Magnetic properties of NdFeB/Fe-Mn powders changed with the increasing of Fe-Mn content. SEM analysis showed the particle size of NdFeB/Fe-Mn powder was smaller as the Fe-Mn composition increases. It showed that NdFeB/Fe-Mn particles have different size and shape for NdFeB and Fe-Mn particles separately. The optimum magnetic properties of NdFeB/Fe-Mn powder was achieved on the 5 wt% Fe-Mn composition with remanence Mr = 49.45 emu/g, coercivity Hc = 2.201 kOe, and energy product, BHmax = 2.15 MGOe.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/985/1/012044