| Home | E-Submission/Review | Sitemap | Editorial Office |  
top_img
Korean Journal of Metals and Materials > Volume 55(5); 2017 > Article
Korean Journal of Metals and Materials 2017;55(5): 328-334. doi: https://doi.org/10.3365/KJMM.2017.55.5.328
철계 비정질/나노 결정 하이브리드 소재의 연자성 특성
이연주1, 전종규1, 장태석2, 이민우2, 김용진3, 양동열3, 이미정1, 최현주1
1국민대학교 신소재공학부
2선문대학교 신소재공학과
3한국기계연구원 부설 재료연구소 분말/세라믹연구본부
Soft Magnetic Properties of Fe-based Amorphous/Nanocrystalline Hybrid Materials
Yeonjoo Lee1, Jonggyu Jeon1, Teasuk Jang2, Minwoo Lee2, Yongjin Kim3, Dongyeol Yang3, Mijung Lee1, Hyunjoo Choi1
1Dept. of Advanced Materials Engineering, Kookmin University, Seoul 02707, Republic of Korea
2Dept. of Advanced Materials Engineering, Sunmoon University, Asan 31460, Republic of Korea
3Powder & Ceramics Division, Korea Institute of Materials Science, Changwon 51508, Republic of Korea
Correspondence  Hyunjoo Choi ,Tel: +82-2-910-4287, Email: hyunjoo@kookmin.ac.kr
Received: 26 September 2016;  Accepted: 3 November 2016.  Published online: 9 May 2017.
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.
Keywords: Fe-based amorphous powder, ball-milling, crystallization, coercivity, magnetization
Editorial Office
The Korean Institute of Metals and Materials
6th Fl., Seocho-daero 56-gil 38, Seocho-gu, Seoul 06633, Korea
TEL: +82-70-4266-1646   FAX: +82-2-557-1080   E-mail: metal@kim.or.kr
About |  Browse Articles |  Current Issue |  For Authors and Reviewers
Copyright © The Korean Institute of Metals and Materials. All rights reserved.                 Developed in M2Community