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Number of results

Journal

2015 | 60 | 1 | 7-10

Article title

Mössbauer study of treated Nd2Fe14B

Content

Title variants

Languages of publication

EN

Abstracts

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.

Publisher

Journal

Year

Volume

60

Issue

1

Pages

7-10

Physical description

Dates

published
1 - 3 - 2015
online
12 - 3 - 2015
received
18 - 6 - 2014
accepted
4 - 11 - 2014

Contributors

  • 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
  • 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

References

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  • 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.
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  • 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.

Document Type

Publication order reference

Identifiers

YADDA identifier

bwmeta1.element.-psjd-doi-10_1515_nuka-2015-0003
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