Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 538, Issue -, Pages 173-176Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2012.05.079
Keywords
Anisotropic SmCo5/alpha-Fe nanocomposite magnet; Surfactant assist ball milling; Bottom-up
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Funding
- National Major Fundamental Research Program of China, Ministry of Science and Technology China [2010CB934600]
- National Natural Science Funding [50871003]
- science and technology project of Beijing Municipal Education Commission [KM201010005025, KM201210005011]
- SRF for ROCS, SEM
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Surfactant assist ball milling, chemical coating, and hot compaction techniques have been applied to prepare bulk anisotropic SmCo5/alpha-Fe nanocomposite permanent magnets. The effects of alpha-Fe content on the structure and magnetic properties of the magnets were studied. As the alpha-Fe content increases, the remanence of the magnets increases first, peaking at 5 wt.% of alpha-Fe content, then falls as the alpha-Fe content increases, while the coercive force of the magnets drops simultaneously. Crystal structure analysis shows that all the magnets exhibit noticeable c-axis crystal texture of SmCo5 phase. The SmCo5/alpha-Fe magnet with 5 wt.% alpha-Fe possesses M-2.3T of 78.68 emu/g, Mr of 70.03 emu/g, and Hci of 8.02 kOe. (C) 2012 Elsevier B.V. All rights reserved.
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