Publication: Mechanical alloying of Sm and Fe mixtures having the molar ratio of 1/2 and 1/3
Issued Date
2000-01-01
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ISSN
00255408
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2-s2.0-0034289659
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Mahidol University
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SCOPUS
Bibliographic Citation
Materials Research Bulletin. Vol.35, No.13 (2000), 2183-2188
Suggested Citation
S. Thongmee, I. M. Tang, T. Methasiri Mechanical alloying of Sm and Fe mixtures having the molar ratio of 1/2 and 1/3. Materials Research Bulletin. Vol.35, No.13 (2000), 2183-2188. doi:10.1016/S0025-5408(00)00415-3 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/25940
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Title
Mechanical alloying of Sm and Fe mixtures having the molar ratio of 1/2 and 1/3
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Abstract
The mechanical alloying of Sm-Fe mixtures of molar ratios 1/2 and 1/3 were carried out. The milled mixtures were subjected to a two-step annealing process; first annealing for 1 h at 900 °C in argon gas, followed by a second annealing for 4 h at temperatures between 300 and 450 °C (Ta2) in nitrogen gas. Both the X-ray diffraction (XRD) and Moessbauer studies indicate that heat treatment of both mixtures results in the growth of the 2-17 (Sm2Fe17Nx) intermetallic. The coercivity of both milled mixtures increases as Ta2is raised, while the specific magnetization of both are seen to decrease initially and then increase as Ta2is raised further.