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A study of magnetic properties and structure of magnets of type (Nd, Pr) – (Tb, Dy, Gd) – (Fe, Co, Al, Cu, Re) – B after heat treatment

  • XIII INTERNATIONAL CONFERENCE ON PERMANENT MAGNETS
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Metal Science and Heat Treatment Aims and scope

Properties of magnets of type (Nd, Pr, R)2(Fe, Co, M)14B are studied in a wide temperature range after different variants of heat treatment. The inflections on the demagnetization curves are associated with defects on the surface of the small-size test pieces. An additional inflection on the demagnetization curve at 10 – 20 K is associated with the presence of a R1.1(Fe, Co)4B4 ferromagnetic phase in the studied temperature range.

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References

  1. V. A. Glebov and A. A. Lukin, Nanocrystalline Rare Earth Magnetically Hard Materials [in Russian], FGUP VNIINM, Moscow (2007), 179 p.

    Google Scholar 

  2. K. Uestuener, M. Katter, R. Blank, et al., “Sintered (Pr, Nd) –Fe – B permanent magnets with (BH)max of 520 kJ/m3 at 85 K for cryogenic applications,” in: Proc. 20th Int. Workshop on Rare Earth Permanent Magnets and Their Applications, Sept. 8 – 10, 2008, Knossos-Crete, pp. 397 – 400.

  3. D. D. Mishin, S. M. Egorov, and E. B. Shamorikova, “A study of the processes of remagnetization of permanent magnets on the basis of neodymium, iron and boron alloys,” in: The Physics of Magnetic Materials [in Russian], KGU, Kalinin (1988), pp. 18 – 39.

    Google Scholar 

  4. J. Fidler and Y. Tawara, “TEM-study of the precipitation of iron in Nd – Fe – B sintered magnets,” IEEE Trans. Magn., 24(2), 1951 – 1953 (1988).

    Article  CAS  Google Scholar 

  5. H. Sepehri-Amin, T. Ohkubo, and K. Hono, “Grain boundary structure and chemistry of Dy-diffusion processed Nd – Fe – B sintered magnets,” J. Appl. Phys., 107(09A), 745 (2010).

    Google Scholar 

  6. W. F. Li, H. Sepehri-Amin, T. Ohkubo, et al., “Distribution of Dy in high coercivity (Nd, Dy) – Fe – B sintered magnets,” Acta Mater., 59, 3061 – 3067 (2011).

    Article  CAS  Google Scholar 

  7. F. Vial and M. Sagawa, “FEG-SEM observation of the grain boundaries in the NdFeB sintered magnets,” in: Proc. 17th Int. Workshop on Rare Earth Permanent Magnets and Their Applications, Aug. 18 – 22, 2002, Newark, Delaware, pp. 141 – 143.

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Correspondence to A. S. Lileev.

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Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 2, pp. 4 – 7, February, 2013.

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Lileev, A.S., Arinicheva, O.A., Lukin, A.A. et al. A study of magnetic properties and structure of magnets of type (Nd, Pr) – (Tb, Dy, Gd) – (Fe, Co, Al, Cu, Re) – B after heat treatment. Met Sci Heat Treat 55, 59–62 (2013). https://doi.org/10.1007/s11041-013-9579-7

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  • DOI: https://doi.org/10.1007/s11041-013-9579-7

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