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Hydrogen as a working atmosphere for manufacturing permanent magnets based on rare-earth metals

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Materials Science Aims and scope

The phase compositions and magnetic properties of permanents magnets of the systems Sm – Co and Nd – Fe – B are analyzed. Features of the hydrogenation–disproportionation–desorption–recombination (HDDR) process in the Nd2 Fe14 B intermetallic are considered. Using the Dd – Fe – B system as an example, we assess stages of manufacture of commercial permanent magnets and show the prospect of using hydrogen as a working atmosphere for the manufacture of magnetic powder. It is established that the HDDR of Dd – Fe – B alloys leads to their homogenization, grain refinement to a grain size of 0.2 to 0.5 μm, and an increase in the volume content of the main ferromagnetic phase Dd2 Fe14 B. By optimizing such a treatment, we managed to increase the magnetic energy (by 10%) and the lift force (by 25 – 27%) of Dd – Fe – B commercial permanent magnets.

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References

  1. V. I. Pokhmurs’kyi and V. V. Fedorov, Influence of Hydrogen on Diffusion Processes in Metals [in Ukrainian], Physicomechanical Institute, Lviv (1998).

    Google Scholar 

  2. V. V. Fedorov and I. I. Bulyk, “Physical mechanism of hydrogen disproportionation–recombination of magnetic intermetallic compounds,” Fiz.-Khim. Mekh. Mater., 38, No. 4, 26–32 (2002).

    Google Scholar 

  3. V. V. Fedorov, P. N. Antonovich, and Yu. N. Nikiforov, Influence of Hydrogen on Atomic Ordering Processes in Alloys Based on Transition Metals [in Russian], Preprint No. 146, Karpenko Physicomechanical Institute, Ukrainian National Academy of Sciences, Lviv, Ukraine (1988).

  4. D. D. Mishin, Magnetic Material [in Russian], Vysshaya Shkola, Moscow (1991).

    Google Scholar 

  5. K. H. J. Buschow and A. S. Goot, “Intermetallic compounds in the system samarium–cobalt,” J. Less-Common Met., 14, 525–528 (1968).

    Article  Google Scholar 

  6. K. H. J. Buschow and F. I. A. Den Brooder, “The cobalt-rich regions of the samarium–cobalt phase diagram,” J. Less-Common Met., 37, 174–176 (1974).

    Article  Google Scholar 

  7. I. B. Kekalo and B. A. Samarin, Physical Metallurgy of Precise Alloys. Alloys with Specific Magnetic Properties [in Russian], Metallurgiya, Moscow (1989).

    Google Scholar 

  8. S. Sugimoto, M. Okada, and K. Inomata, “Rare-earth magnet industry in Japan: current status & future trends,” in: Proc. of the 17th Int. Workshop on Rare-Earth Magnets and their Application, Delaware (2002), pp. 13–21.

  9. I. I. Bulyk and A. M. Trostyanchyn, “Hydrogenation–disproportionation in a samarium–cobalt ferromagnetic alloy based on Sm2 (Co, Fe, Cu, Zr)17,” Fiz.-Khim. Mekh. Mater., 39, No. 4, 77–82 (2003).

    Google Scholar 

  10. I. I. Bulyk, V. V. Panasyuk, and A. M. Trostyanchyn, “Features of the HDDR process in alloys based on the SmCo5 compounds,” J. Alloys Comp., 379, No. 1–2, 154–160 (2004).

    Article  CAS  Google Scholar 

  11. M. Sagawa, S. Fujimura, N. Togawa, et al., “New materials for permanent magnets on a base of Nd and Fe,” J. Appl. Phys., 55, 2083–2087 (1984).

    Article  CAS  ADS  Google Scholar 

  12. K. Khlopkov, O. Gutfleisch, et al., “Local texture in Nd–Fe–B sintered magnets with maximized energy density,” J. Alloys Comp., 365, 259–265 (2004).

    Article  CAS  Google Scholar 

  13. N. F. Chaban, Yu. B. Kyz’ma, N. S. Bilonizhko, et al., “Ternary systems (Nd, Sm, Gd)–Fe–B,” Dopov. Akad. Nauk Ukr. RSR. Ser. A, No. 10, 873–875 (1979).

  14. http:/www.ndfeb.ru/articles/perm_mag.htm.

  15. J. F. Herbst, J. J. Croat, F. E. Pinkerton, and W. B. Yelon, “Relationships between crystal structure and magnetic properties of Nd2 Fe14 B,” Phys. Rev., B29, 4176–4178 (1984).

    ADS  Google Scholar 

  16. I. R. Harris and P. J. McGuinnes, “Hydrogen: its use in the processing of NdFeB-type magnets,” J. Less-Common Met., 172–174, 1273–1284 (1991).

    Article  Google Scholar 

  17. O. Gutfleisch and I. R. Harris, “Fundamental and practical aspects of the hydrogenation, disproportionation, desorption and recombination process,” J. Phys. D. Appl. Phys., 29, No. 9, 2255–2265 (1996).

    Article  CAS  ADS  Google Scholar 

  18. M. Matzinger, J. Fidler, A. Fujita, and I. R. Harris, “Microstructure of solid-HDDR Nd–Fe–B:Zr magnets,” J. Magn. Magn. Mater., 157–158, 54–56 (1996).

    Article  Google Scholar 

  19. T. Takeshita and R. Nakayama, “Magnetic properties and microstructures of the NdFeB magnet powder produced by hydrogen treatment,” in: Proc. of the 10th Int. Workshop on Rare-Earth Magnets and their Application, Kyoto (1989), pp. 551–557.

  20. O. Gutfleisch, N. Martinez, M. Verdier, and I. R. Harris, “Phase transformations during the disproportionation stage in the solid HDDR process in a Nd16 Fe76 B8 alloy,” J. Alloys Comp., 215, 227–233 (1994).

    Article  CAS  Google Scholar 

  21. N. Cannesan and I. R. Harris, “Aspects of NdFeB HDDR powders: fundamentals and processing,” in: G. C. Hadjipanayis (editor), Bonded Magnets, NATO Science Series: II. Mathematics, Physics and Chemistry, 118 (2002), pp. 13–36.

  22. O. Gutfleisch, I. R. Harris , M. Matzinger, and J. Fidler, “Characterization of Solid-HDDR processed Nd16 Fe76 B8 alloys by means of electron microscopy,” J. Magn. Magn. Mater., 147, 320–330 (1995).

    Article  CAS  ADS  Google Scholar 

  23. G. P. Brekharya, V. V. Vasil’eva, V. V. Nemoshkalenko, et al., “Influence of preparation conditions of permanent magnets of the didymium–iron–boron system on their structure and properties,” Metallofiz. Noveish. Tekhnol., 19, No. 10, 63–68 (1997).

    CAS  Google Scholar 

  24. D. Hove, “Innovation and integration—the key to exploiting recent advances in NdFeB magnets in electrical machines,” in: Proc. of the 17th Int. Workshop on Rare-Earth Magnets and Their Application, Birmingham (1994), pp. 17–32.

  25. V. A. Yartys’ and A. I. Shtogrin, “Manufacture of fine powder of a Nd–Fe–M alloy by the method of hydride dispersion,” Fiz.-Khim. Mekh. Mater., 24, No. 4, 111–114 (1988).

    Google Scholar 

  26. V. A. Yartys’, I. I. Bulyk, P. M. Gritsishin, and A. I. Shtogrin, Manufacturing Method of Powders of Alloys of Rare-Earth Metals Based on Iron and Cobalt [in Russian], Inventor’s Certificate of the USSR No. 1748948, Published on 23.07.92, Bulletin No. 27.

  27. I. I. Bulyk, V. V. Panasyuk, A. M. Trostyanchyn, Yu. B. Basaraba, and Yu. H. Putilov, Manufacturing Method of Permanent Magnets Based on Alloys of the Dd–Fe–D System [in Ukrainian], Patent of Ukraine No. 71274 A, MKI H 01 F 77.00, 7/02, B 22 F 9/00, Published on 15.11.2004, Bulletin No. 11.

  28. I. I. Bulyk, Yu. B. Basaraba, V. V. Panasyuk, and Yu. H. Putilov, Manufacturing Method of Powders of Materials and Equipment for Realizing the Method [in Ukrainian], Patent of Ukraine No. 51229, MKI H 01 F 7/00, H 01 F 7/02, B 22 F 9/00, Published on 15.09.2005, Bulletin No. 9.

  29. I. I. Bulyk, V. V. Panasyuk, Yu. H. Putilov, and V. A. Yartys’, Manufacturing Method of Permanent Magnets Based on Alloys of the Dd–Fe–D System [in Ukrainian], Patent of Ukraine No. 51234, MKI H 01 F 7/00, H 01 F 7/02, B 22 F 9/00, Published on 15. 09. 2005, Bulletin No. 9.

  30. I. I. Bulyk, R. V. Denys, V. V. Panasyuk, et al., “HDDR process and hydrogen-absorption properties of didymium–aluminum–iron–boron ( Dd12.3 Al1.2 Fe79.4 B6) alloy,” Fiz.-Khim. Mekh. Mater., 37, No. 4, 15–20 (2001).

    Google Scholar 

  31. I. I. Bulyk, V. V. Panasyuk, A. M. Trostyanchyn, and V. V. Fedorov, “Specific features of the interaction of alloys of the didymium–iron–boron system with hydrogen,” Fiz.-Khim. Mekh. Mater., 40, No. 2, 105–112 (2004).

    Google Scholar 

  32. I. I. Bulyk, V. V. Panasyuk, A. M. Trostyanchyn, et al., “X-ray and metallographic investigations of phase transformations in the process of solid-HDDR in a ferromagnetic alloy of the didymium–iron–-boron system,” Sovrem. Elektromet., No. 3, 42–45 (2004).

    Google Scholar 

  33. A. M. Trostyanchyn, Influence of Hydrogen Treatment on the Structure and Properties of Commercial Magnetic Alloys Based on the Sm–Co and Dd–Fe–B Systems [in Ukrainian], Author’s Abstract of the Candidate Degree Thesis (Technical Sciences), Physicomechanical Institute, Lviv (2005).

  34. I. I. Bulyk and A. M. Trostyanchyn, “Structure of a SmCo5 -based alloy after disproportionation–recombination,” Fiz.-Khim. Mekh. Mater., 42, No. 5, 65–68 (2006).

    Google Scholar 

  35. I. I. Bulyk, V. V. Fedorov, A. M. Trostyanchyn, Yu. B. Basaraba, and V. H. Senyushko, Method of Homogenization of Intermetallic Compounds of Hydride-Forming Metals (Variants) [in Ukrainian], Patent of Ukraine No. 51233, , MKI H 01 F 1/18, 1/02, Published on 15.09.2005, Bulletin No. 9.

  36. G. P. Brekharya, E. A. Vasil’eva, V. V. Nemoshkalenko, et al., “Influence of heat treatment of permanent magnets of the didymium–iron–boron system on their structure and properties,” Metallofiz. Noveish. Tekhnol., 20, No. 7, 38–44 (1998).

    CAS  Google Scholar 

  37. V. V. Fedorov, I. I. Bulyk, A. M. Trostyanchyn, and S. V. Mokhun, “Optimization of conditions of chemicothermal treatment of hydride-forming materials based on the determination of the diffusion coefficients of hydrogen in them,” Nauk. Notat., No. 20, 522–526 (2007).

    Google Scholar 

  38. V. A. Didus, S. B. Rybalka, E. V. Dodonova, and V. A. Goltsov, “The effect of hydrogen pressure and temperature on kinetics of hydrogen-induced direct phase transformation in hard magnetic alloy,” J. Alloys Comp., 404–406, 352–354 (2005).

    Google Scholar 

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Authors and Affiliations

  1. Karpenko Physicomechanical Institute, Ukrainian National Academy of Sciences, Lviv, Ukraine

    V. V. Fedorov, I. I. Bulyk & V. V. Panasyuk

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  1. V. V. Fedorov
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  2. I. I. Bulyk
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  3. V. V. Panasyuk
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Correspondence to V. V. Fedorov.

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Translated from Fizyko-Khimichna Mekhanika Materialiv, Vol. 45, No. 2, pp. 111–120, March – April, 2009.

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Fedorov, V.V., Bulyk, I.I. & Panasyuk, V.V. Hydrogen as a working atmosphere for manufacturing permanent magnets based on rare-earth metals. Mater Sci 45, 268–278 (2009). https://doi.org/10.1007/s11003-009-9185-4

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