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Rare Metals
Published in: Rare Metals 11/2020

25-02-2019

Microstructure and magnetic properties of SmCo5 sintered magnets

Authors: Dong-Tao Zhang, Rong-Chun Zhu, Ming Yue, Wei-Qiang Liu

Published in: Rare Metals | Issue 11/2020

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Abstract

SmCo5 sintered magnets with good thermal stability are mainly used in high-temperature field. In this study, two types of SmCoz powders with different nominal z values were mixed and synthesized into SmCo5 magnets by the traditional powder metallurgy method. The magnetic properties of the SmCo5 sintered magnet are maximum energy product of (BH)max = 172.29 kJ·m−3, remanence of Br = 7.47 × 105 A·m−1 and coercivity of Hci = 2.42 T. The results show that there are three coexisting phases in the magnet, which are SmCo5 phase, Sm2Co7 phase and Sm2O3 phase. The microstructural observation indicates that the average grain size in the magnet is about 8 μm, and the high coercivity of this magnet is attributed to these fine grains. X-ray diffraction (XRD) and electron backscatter diffraction (EBSD) results indicate that the magnet has a well-aligned (00l) orientation texture.
previous article Secondary recrystallization of Goss texture in magnetostrictive Fe–Ga-based sheets
next article Electrolyte composition and galvanic corrosion for ruthenium/copper electrochemical mechanical polishing

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Metadata
Title
Microstructure and magnetic properties of SmCo5 sintered magnets
Authors
Dong-Tao Zhang
Rong-Chun Zhu
Ming Yue
Wei-Qiang Liu
Publication date
25-02-2019
Publisher
Nonferrous Metals Society of China
Published in
Rare Metals / Issue 11/2020
Print ISSN: 1001-0521
Electronic ISSN: 1867-7185
DOI
https://doi.org/10.1007/s12598-018-01198-8

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