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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 1996.6
- 수록면
- 19 - 23 (5page)
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초록· 키워드
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In the present study, the Sm₂Fe_(17)Nx-type interstitial materials have been prepared by reaction between Nb-free or Nb-containing Sm₂Fe_(l7)-type alloy and N₂ gas. Nitrogenation behaviour of the Sm₂Fe_(l7)-type material and disproportionation characteristics of the nitrogenated materials have been studied by means of differential thermal analysis (DTA) and thermopiezic analysis (TPA). Magnetic properties of the produced Sm₂Fe_(17)Nx-type interstitial materials were characterised in vibrating sample magnetometer (VSM) or thermomagnetic analyser (TMA). Epoxy-bonded or Zn-bonded Sm₂Fe_(17)Nx-type magnets were prepared, and their magnetic properties were investigated. It has been found that nitrogenation kinetics of the Sm₂Fe_(l7)-type alloy is improved significantly by the Nb-substitution for Fe in the alloy. The Nb-substitution is also found to enhance thermal stability of the Sm₂Fe_(17)Nx-type interstitial material. Hard magnetic properties of the interstitial materials produced from Nb-free or Nb-containing alloy is high enough (intrinsic coercivity: over 7 kOe) for application as bonded permanent magnets. The good hard magnetic properties of the interstitial material are maintained in the epoxy-bonded magnet. Intrinsic coercivity of the Zn-bonded magnets is improved significantly as post-bonding annealing time increases.
목차
Abstract
1. Introduction
2. Experimental Work
3. Results and Discussion
4. Conclusion
Acknowledgement
References
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