| Title |
Soft Magnetic Properties of Fe-based Amorphous/Nanocrystalline Hybrid Materials |
| Authors |
이연주(Yeonjoo Lee); 전종규(Jonggyu Jeon); 장태석(Teasuk Jang); 이민우(Minwoo Lee); 김용진(Yongjin Kim); 양동열(Dongyeol Yang); 이미정(Mijung Lee); 최현주(Hyunjoo Choi) |
| DOI |
https://doi.org/10.3365/KJMM.2017.55.5.328 |
| ISSN |
1738-8228(ISSN), 2288-8241(eISSN) |
| Keywords |
Fe-based amorphous powder; ball-milling; crystallization; coercivity; magnetization |
| 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) |