DOI QR코드

DOI QR Code

Fe83.2Si5.33-0.33xB10.67-0.67xPxCu0.8 나노결정질 연자성 합금의 P함량에 따른 미세구조 및 자기적 특성 변화 관찰에 관한 연구

A Study on the Microstructure and Magnetic Properties of Fe83.2Si5.33-0.33xB10.67-0.67xPxCu0.8 Nanocrystalline Soft Magnetic Alloys with varying P Content

  • 임현아 (한국재료연구원 분말재료연구본부) ;
  • 배경훈 (한국재료연구원 분말재료연구본부) ;
  • 남영균 (한국재료연구원 분말재료연구본부) ;
  • 안수봉 (한국재료연구원 분말재료연구본부) ;
  • 양상선 (한국재료연구원 분말재료연구본부) ;
  • 김용진 (한국재료연구원 분말재료연구본부) ;
  • 이정우 (부산대학교 재료공학부) ;
  • 정재원 (한국재료연구원 분말재료연구본부)
  • Im, Hyun Ah (Metal Powder Department, Korea Institute of Materials Science (KIMS)) ;
  • Bae, Kyoung-Hoon (Metal Powder Department, Korea Institute of Materials Science (KIMS)) ;
  • Nam, Yeong gyun (Metal Powder Department, Korea Institute of Materials Science (KIMS)) ;
  • An, Subong (Metal Powder Department, Korea Institute of Materials Science (KIMS)) ;
  • Yang, Sangsun (Metal Powder Department, Korea Institute of Materials Science (KIMS)) ;
  • Kim, Yong-Jin (Metal Powder Department, Korea Institute of Materials Science (KIMS)) ;
  • Lee, Jung Woo (Department of Materials Science and Engineering, Pusan National University) ;
  • Jeong, Jae Won (Metal Powder Department, Korea Institute of Materials Science (KIMS))
  • 투고 : 2021.04.15
  • 심사 : 2021.04.29
  • 발행 : 2021.08.28

초록

We investigate the effect of phosphorous content on the microstructure and magnetic properties of Fe83.2Si5.33-0.33xB10.67-0.67xPxCu0.8 (x = 1-4 at.%) nanocrystalline soft magnetic alloys. The simultaneous addition of Cu and P to nanocrystalline alloys reportedly decreases the nanocrystalline size significantly, to 10-20 nm. In the P-containing nanocrystalline alloy, P atoms are distributed in an amorphous residual matrix, which suppresses grain growth, increases permeability, and decreases coercivity. In this study, nanocrystalline ribbons with a composition of Fe83.2Si5.33-0.33xB10.67-0.67xPxCu0.8 (x = 1-4 at.%) are fabricated by rapid quenching melt-spinning and thermal annealing. It is demonstrated that the addition of a small amount of P to the alloy improves the glass-forming ability and increases the resistance to undesirable Fex(B,P) crystallization. Among the alloys investigated in this work, an Fe83.2Si5B10P1Cu0.8 nanocrystalline ribbon annealed at 460℃ exhibits excellent soft-magnetic properties including low coercivity, low core loss, and high saturation magnetization. The uniform nanocrystallization of the Fe83.2Si5B10P1Cu0.8 alloy is confirmed by high-resolution transmission electron microscopy analysis.

키워드

과제정보

This research was supported by Civil-Military Technology Cooperation Program (18-CM-MA-15).

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