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Materials 2017, 10(8), 869; doi:10.3390/ma10080869

A Cost-Effective Approach to Optimizing Microstructure and Magnetic Properties in Ce17Fe78B6 Alloys

Institute of Materials, School of Materials Science and Engineering, Shanghai University, Shanghai 200072, China
National High Magnetic Field Laboratory, Florida State University, 1800 E. Paul Dirac Drive, Tallahassee, FL 32310, USA
Tescan China, Shanghai 201112, China
Authors to whom correspondence should be addressed.
Received: 20 June 2017 / Revised: 15 July 2017 / Accepted: 19 July 2017 / Published: 28 July 2017
(This article belongs to the Section Manufacturing Processes and Systems)
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Optimizing fabrication parameters for rapid solidification of Re-Fe-B (Re = Rare earth) alloys can lead to nanocrystalline products with hard magnetic properties without any heat-treatment. In this work, we enhanced the magnetic properties of Ce17Fe78B6 ribbons by engineering both the microstructure and volume fraction of the Ce2Fe14B phase through optimization of the chamber pressure and the wheel speed necessary for quenching the liquid. We explored the relationship between these two parameters (chamber pressure and wheel speed), and proposed an approach to identifying the experimental conditions most likely to yield homogenous microstructure and reproducible magnetic properties. Optimized experimental conditions resulted in a microstructure with homogeneously dispersed Ce2Fe14B and CeFe2 nanocrystals. The best magnetic properties were obtained at a chamber pressure of 0.05 MPa and a wheel speed of 15 m·s−1. Without the conventional heat-treatment that is usually required, key magnetic properties were maximized by optimization processing parameters in rapid solidification of magnetic materials in a cost-effective manner. View Full-Text
Keywords: rare earth alloys; melt-spinning; quenching parameters; magnetic property; microstructure rare earth alloys; melt-spinning; quenching parameters; magnetic property; microstructure

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Tan, X.; Li, H.; Xu, H.; Han, K.; Li, W.; Zhang, F. A Cost-Effective Approach to Optimizing Microstructure and Magnetic Properties in Ce17Fe78B6 Alloys. Materials 2017, 10, 869.

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