Journal of Powder Materials (한국분말재료학회지)

The Korean Powder Metallurgy & Materials Institute (한국분말재료학회 (*구 분말야금학회))
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Fabrication and Magnetic Properties of Nanostructured Fe-Co Alloy Powder

나노 구조 Fe-Co 합금분말의 제조 및 자성특성

  • Published : 2002.06.01
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Abstract

Conventional Fe-Co alloys are important soft magnetic materials that have been widely used in industry. Compared to its polycrystalline counterpart, the nanostructured materials have showed superior magnetic properties, such as higher permeability and lower coercivity due to the single domain configuration. However, magnetic properties of nanostructured materials are affected in complicated manner by their microstructure such as grain size, internal strain and crystal structure. Thus, studies on synthesis of nanostructured materials with controlled microstructure are necessary for a significant improvement in magnetic properties. In the present work, starting with two powder mixtures of Fe and Co produced by mechanical alloying (MA) and hydrogen reduction process (HRP), differences in the preparation process and in the resulting microstructural characteristics will be described for the nano-sized Fe-Co alloy particles. Moreover, we discuss the effect of the microstructure such as crystal structure and grain size of Fe-Co alloys on the magnetic properties.

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References

  1. R. W. Siegel and G. E. Fouger: Nanostruct, Master., 6 (1995) 205. https://doi.org/10.1016/0965-9773(95)00044-5
  2. C. Suryanarayana: J. Korean. Powder. Metall, Inst., 3 (1996) 233.
  3. R. Birringer: Master. Sci. Eng., A1l7 (1989) 33. https://doi.org/10.1016/0921-5093(89)90083-X
  4. J. Eastman, R. W. Siegel: Res. Dev., 31 (1989) 56.
  5. H. Gleiter: Prog. Master. Sci., 33 (1989) 223. https://doi.org/10.1016/0079-6425(89)90001-7
  6. D. L. Lesile-Pelecky, R. D. Rieke: Chem Mater., 8 (1996) 1770. https://doi.org/10.1021/cm960077f
  7. G. Herzer: J. Mag. Mag. Mater., 157/158 (1996) 133. https://doi.org/10.1016/0304-8853(95)01126-9
  8. B. D. Cullity: Introduction to Magnetic Materials, Addison-Wesley Publishing Company, USA, (1972).
  9. E. C. Stoner, E. P. Wohlfarth: Proc. Phys. Soc., 240 (1948) 599.
  10. N. Kurti: Selected Works of Louis Neel, Gordon and Break Science Publishers, New York, USA, (1988).
  11. G. Herzer: J. Mag. Mag. Master., 112 (1992) 258. https://doi.org/10.1016/0304-8853(92)91168-S
  12. R. Alben, J. J. Becker and M. C. Chi: J. Appl. Phys., 4 (1978) 1653. https://doi.org/10.1063/1.324881
  13. G. Herzer: IEEE. Trans. Mag., 26 (1990) 1397. https://doi.org/10.1109/20.104389
  14. M. Muller, N. Mattern and U. Kuhn: J. Mag. Mag. Mater., 157/158 (1996) 209. https://doi.org/10.1016/0304-8853(95)01082-3
  15. J. S. Benjamin: Metall. Trans., 1 (1970) 2943.
  16. 이광민 : 박사학위논문, 한양대학교, (1991).
  17. B. D. Cullity: Elements of X-ray Diffraction (2nd ed.), Addison-Wesley. Pub. Co. Inc (1978) 356.
  18. B. D. Cullity: Elements of X-ray Diffraction (2nd ed.), Addison-Wesley. Pub. Co. Inc (1978) 118.
  19. G. K. Williamson and W. H. Hall: Acta Metall., 1 (1953) 22. https://doi.org/10.1016/0001-6160(53)90006-6
  20. C. Kuhrt, L. Schultz: J Appl Phys., 73 (1993) 6588. https://doi.org/10.1063/1.352573
  21. G. K. Williamson, W. H. Hall: Acta Metal., 1 (1953) 22. https://doi.org/10.1016/0001-6160(53)90006-6

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