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2015 | 60 | 1 | 7-10
Tytuł artykułu

Mössbauer study of treated Nd2Fe14B

Treść / Zawartość
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
The Nd2Fe14B cylindrical magnets were treated with water solutions of alkali, acid, and salt. Mössbauer spectroscopy was applied to study the composition and properties of the surface material of the treated magnets. It is shown that the main phase of the permanent Nd2Fe14B magnet partly decomposes. The released α-Nd at the grain boundaries interacts with water and forms neodymium hydroxide matrix, and the released Fe diffuses into it. The presence of Fe-Nd(OH)3 is reflected in the paramagnet doublet in the Mössbauer spectra of treated neodymium magnets.
Wydawca

Czasopismo
Rocznik
Tom
60
Numer
1
Strony
7-10
Opis fizyczny
Daty
wydano
2015-03-01
otrzymano
2014-06-18
zaakceptowano
2014-11-04
online
2015-03-12
Twórcy
  • Institute of Physics, M. Curie-Skłodowska University, 1 M. Curie-Skłodowskiej Sq., 20-031 Lublin, Poland
  • Department of Molten Salts, “Ilie Murgulescu” Institute of Physical Chemistry, Romanian Academy, 202 Splaiul Independentei Str., Bucharest, Romania
  • Department of Molten Salts, “Ilie Murgulescu” Institute of Physical Chemistry, Romanian Academy, 202 Splaiul Independentei Str., Bucharest, Romania
  • Institute of Physics, M. Curie-Skłodowska University, 1 M. Curie-Skłodowskiej Sq., 20-031 Lublin, Poland
  • Scientific-Practical Materials Research Center of National Academy of Sciences of Belarus, 19 P. Brovky Str., Minsk, 220072 Belarus, Tel.: +375 17 284 1301, Fax: +375 17 284 1558, lttt@physics.by
  • Scientific-Practical Materials Research Center of National Academy of Sciences of Belarus, 19 P. Brovky Str., Minsk, 220072 Belarus, Tel.: +375 17 284 1301, Fax: +375 17 284 1558
Bibliografia
  • 1. Yu, L. Q., Liu, R. S., Dong, K. T., & Zhang, Y. P. (2012). Key techniques for ultrahigh performance sintered Nd–Fe–B magnets preparation. Transworld Research Network. Retrieved February 10, 2014, from .
  • 2. Gurappa, I. (2003). Corrosion characteristics of permanent magnets in acidic environments. J. Alloy. Compd., 360, 236–242.
  • 3. El-Moneim, A. A., & Gebert, A. (2003). Electrochemical characterization of galvanically coupled single phases and nanocrystalline NdFeB-based magnets in NaCl solutions. J. Appl. Electrochem., 33, 795–805.
  • 4. El-Moneim, A. A. (2004). Passivity and its breakdown of sintered NdFeB-based magnets in chloride containing solution. Corros. Sci., 46, 2517–2532.
  • 5. Klevets, N. I. (2005). Synthesis of magnetic systems producing field with maximal scalar characteristics. J. Magn. Magn. Mater., 285, 401–409.
  • 6. Herbst, J. F., Croat, J. J., Pinkerton, F. E., & Yelon, W. B. (1984). Relationships between crystal structure and magnetic properties in Nd2Fe14B. Phys. Rev. B, 29, 4176–4178.
  • 7. Givord, D., Li, H. S., & Moreau, J. M. (1984). Magnetic properties and crystal structure of Nd2Fe14B. Solid State Commun., 5, 497–499.
  • 8. Pinkerton, F. E., & Dunham, W. R. (1984). Mössbauer effect studies of Nd2Fe14B and related melt-spun permanent magnet alloys. Appl. Phys. Lett., 45, 1248–1250.
  • 9. Jueyun, P., Zhengwen, L., Ruzhang, M., Shuming, P., & Shikuan, R. (1986). Mössbauer studies of Nd-Fe-B alloys. Acta Metall., 22, 127–132.
  • 10. Hua, H. C., Wang, G. Y., Xu, Q. Z., Jin, H. J., & Xu, G. Q. (1991). Study of oxidation of NdFeB permanent magnets. Phys. Status Solidi A-Appl. Mat., 125(2), 615–624. DOI: 10.1002/pssa.2211250223.[Crossref]
  • 11. Tian, H., Li, Y., Zhu, M., Jin, H., & Jin, D. (2007). Microstructure of single stage hot deformed anisotropic Nd-Fe-B magnets. Phys. Status Solidi C, 4, 4625–4629.
  • 12. Sagawa, M., Fujimura, S., Togawa, N., Yamamoto, H., & Matsuura, Y. (1984). New material for permanent magnets on a base of Nd and Fe. J. Appl. Phys., 66, 2083–2087.
  • 13. Camp, F. E., & Kim, A. S. (1991). Effect of microstructure on the corrosion behavior of NdFeB and NdFeCoAlB magnets. J. Appl. Phys., 70, 6348–6350. DOI: 10.1063/1.349938.[Crossref]
  • 14. Zak, T., Talijan, N., Cocovic, V., & Grujic, A. (2008). NdFeB permanent magnets with various Nd content. Acta Phys. Pol. A, 113, 279–282.
  • 15. Gu, B. X., Xue, D. S., Shen, B. G., Li, F. S., & Zhai, H. R. (1992). Mössbauer study of amorphous NdxFe81B19-x (0 < x ≤ 19) alloys. Hyperf. Interact., 68, 377–380.
Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.-psjd-doi-10_1515_nuka-2015-0003
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