<abstract xmlns="http://www.w3.org/1999/xhtml">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.</abstract>

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.

Mössbauer study of treated Nd2Fe14B

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

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

Nukleonika

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The Nd2Fe14B cylindrical magnets were treated with water solutions of alkali, acid, and salt. Mössbauer spectroscopy was applied to study the composition and...

Mössbauer study of treated Nd₂Fe₁₄B

Published Online: Mar 12, 2015

Page range: 7 - 10

Received: Jun 18, 2014

Accepted: Nov 04, 2014

DOI: https://doi.org/10.1515/nuka-2015-0003

Keywords
intermetallics, intergranular corrosion, Mössbauer spectroscopy

© Mieczysław Budzyński, Virgil C. Constantin, Ana-Maria J. Popescu, Zbigniew Surowiec, Tamara M. Tkachenka, Kazimir I. Yanushkevich

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Mössbauer study of treated Nd2Fe14B

Published Online: Mar 12, 2015

Page range: 7 - 10

Received: Jun 18, 2014

Accepted: Nov 04, 2014

DOI: https://doi.org/10.1515/nuka-2015-0003

Keywordsintermetallics, intergranular corrosion, Mössbauer spectroscopy

© Mieczysław Budzyński, Virgil C. Constantin, Ana-Maria J. Popescu, Zbigniew Surowiec, Tamara M. Tkachenka, Kazimir I. Yanushkevich

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Mössbauer study of treated Nd₂Fe₁₄B

Keywords
intermetallics, intergranular corrosion, Mössbauer spectroscopy