Amorphization, Crystallization, and Magnetic Properties of Melt-Spun SmCo7−x(Cr3C2)x Alloys
Joint Authors
Source
Issue
Vol. 2011, Issue 2011 (31 Dec. 2011), pp.1-5, 5 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2011-02-15
Country of Publication
Egypt
No. of Pages
5
Main Subjects
Abstract EN
Effects of Cr3C2 content and wheel surface speed on the amorphous formation ability and magnetic properties have been investigated for melt-spun SmCo7−x(Cr3C2)x (x=0.10-0.25) alloys.
Ribbon melt-spun at lower wheel speed (30 m/s) has composite structure composed of mostly SmCo7, a small amount of Sm2Co17, and residual amorphous phases.
The grain size of SmCo7 phase decreases with the increase of Cr3C2 content x.
When melt spinning at 40 m/s, SmCo7−x(Cr3C2)x alloys can be obtained in the amorphous state for 0.15≤x≤0.25 with intrinsic coercive Hci of the order of 40–70 Oe.
DSC analysis reveals that SmCo7 phase first precipitates from the amorphous matrix at 650∘C, followed by the crystallization of Sm2Co17 phase at 770∘C.
Optimal coercivity Hci of 7.98 kOe and remanent magnetization Mr of 55.05 emu/g have been realized in SmCo6.8(Cr3C2)0.20 magnet subjected to melt spinning at 40 m/s and annealing at 650∘C for 5 min.
The domain structure of the annealed ribbon is composed of interaction domains typically 100–400 nm in size, which indicates the presence of a strong exchange coupling between the grains.
American Psychological Association (APA)
Li, Liya& Xie, Wei. 2011. Amorphization, Crystallization, and Magnetic Properties of Melt-Spun SmCo7−x(Cr3C2)x Alloys. Journal of Metallurgy،Vol. 2011, no. 2011, pp.1-5.
https://search.emarefa.net/detail/BIM-507373
Modern Language Association (MLA)
Li, Liya& Xie, Wei. Amorphization, Crystallization, and Magnetic Properties of Melt-Spun SmCo7−x(Cr3C2)x Alloys. Journal of Metallurgy No. 2011 (2011), pp.1-5.
https://search.emarefa.net/detail/BIM-507373
American Medical Association (AMA)
Li, Liya& Xie, Wei. Amorphization, Crystallization, and Magnetic Properties of Melt-Spun SmCo7−x(Cr3C2)x Alloys. Journal of Metallurgy. 2011. Vol. 2011, no. 2011, pp.1-5.
https://search.emarefa.net/detail/BIM-507373
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-507373