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Vol.55, No.5, 328 ~ 335, 2017
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| Title |
| Soft Magnetic Properties of Fe-based Amorphous/Nanocrystalline Hybrid Materials |
| 이연주 Yeonjoo Lee , 전종규 Jonggyu Jeon , 장태석 Teasuk Jang , 이민우 Minwoo Lee , 김용진 Yongjin Kim , 양동열 Dongyeol Yang , 이미정 Mijung Lee , 최현주 Hyunjoo Choi |
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| Abstract |
| In this study, the effect of the crystalline structure on the magnetic properties of Fe-based amorphous powder is investigated. The Fe-B-P-C-Nb-Hf amorphous powder with excellent soft magnetic properties is prepared via gas-atomization, and the atomized amorphous powder is annealed in order to generate a small amount of nanosized crystallites in the amorphous matrix. For the powder annealed at 375 ℃, the coercivity is decreased by 96.15% from 3632.68 to 139.89 A/m, and the magnetization is increased 19.04% from 0.192 to 0.229 Wbm/g. For the powder annealed at 425 ℃, the coercivity is decreased 95.14% to 176.72 A/m and the magnetization is increased 0.71% to 0.193 Wbm/g. The simultaneous enhancement of the coercivity and magnetization can be attributed to the generation of a small amount of nanosized crystallites and the release of the residual stresses. †(Received September 26, 2016; Accepted November 3, 2016) |
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| Key Words |
| Fe-based amorphous powder, ball-milling, crystallization, coercivity, magnetization |
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