Effect of quenching rate on the structural and hard magnetic properties of Nd-Fe-B melt-spun ribbons

Haldar, Arabinda (2023) Effect of quenching rate on the structural and hard magnetic properties of Nd-Fe-B melt-spun ribbons. AIP Advances, 13 (2). 025301. ISSN 2158-3226

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Abstract

The phase structure, microstructure, magnetic and thermomagnetic properties of nanostructured Nd-Fe-B melt-spun ribbons were investigated. The melt-spun ribbons have been prepared at different wheel speeds varying from 17 to 25 m/s. The hard magnetic Nd2Fe14B phase with (00l) texture, indicating preferred crystallographic orientation, was observed in all the ribbons with some α-Fe(Co) as the minor phase. Nd2Fe14B grains are uniformly distributed with grain sizes ranging from 50 to 150 nm. A decrease in the average grain size of Nd2Fe14B and fading away of texture formation in the ribbons were found with the increase in the wheel speeds. The best combination of magnetic properties with a coercivity of 14.5 kOe, the saturation magnetization of 132 emu/g, and the energy product of 16 MGOe was achieved at 23 m/s and these ribbons are suitable for the fabrication of hot deformation Nd-Fe-B magnets.

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IITH Creators:
IITH CreatorsORCiD
Haldar, Arabindahttp://www.orcid.org/0000-0002-0490-9719
Item Type: Article
Uncontrolled Keywords: Crystallographic orientations; Hard magnetic property; Melt-spun ribbons; Microstructures properties; Nano-structured; Nd-Fe-B; Quenching rate; Structure property; Thermomagnetic properties; Wheel speed; Grain size and shape; Magnetic properties; Melt spinning; Neodymium alloys; Saturation magnetization; Textures; Wheels; Iron alloys
Subjects: Physics
Physics > Magnetism
Divisions: Department of Physics
Depositing User: Mr Nigam Prasad Bisoyi
Date Deposited: 22 Aug 2023 05:44
Last Modified: 22 Aug 2023 05:44
URI: http://raiith.iith.ac.in/id/eprint/11607
Publisher URL: https://doi.org/10.1063/9.0000524
OA policy: https://v2.sherpa.ac.uk/id/publication/18839
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