High-power (Nd, Dy)–(Fe, Co)–B magnets with a low temperature coefficient of induction
- Autores: Popov A.1,2, Kolodkin D.1, Gaviko V.1,2, Vasilenko D.3, Shitov A.3, Vlasyuga A.3, Govorkov M.3, Bratushev D.3
-
Afiliações:
- Institute of Metal Physics, Ural Branch
- Yeltsin Ural Federal University
- Ural Electromechanical Plant
- Edição: Volume 118, Nº 10 (2017)
- Páginas: 935-945
- Seção: Electrical and Magnetic Properties
- URL: https://journals.rcsi.science/0031-918X/article/view/167240
- DOI: https://doi.org/10.1134/S0031918X1710009X
- ID: 167240
Citar
Resumo
High-power (Nd, Dy)–(Fe, Co)–B permanent magnets with a low temperature coefficient of induction (α) were prepared using advantages of strip casting and low-oxygen technologies. The microstructure and temperature dependences of magnetic properties have been studied on sintered (Nd1 – xDyx)13.9(Fe1 – yCoy)79.8Cu0.1Ga0.1B6.1 magnets with 0.20 ≤ x ≤ 0.25 and 0 ≤ y ≤ 0.20. The increase in y from 0 to 0.20 is accompanied by an increase in the Curie temperature from 327 to 492°C. This favors a decrease in the value of α from 0.099 to 0.060%/°C, respectively. Magnets with an oxygen content of no more than 2500 ppm which were prepared from the (Nd0.75Dy0.25)13.9(Fe0.85Co0.15)79.8Cu0.1 Ga0.1B6.1 alloy, have the following hysteresis characteristics at 140°C: Br ≥ 11.3 kG, Hc ≥ 8 kOe, and (BH)max ≥ 30 MGOe; in this case, α ≤ |–0.07%/°С|.
Palavras-chave
Sobre autores
A. Popov
Institute of Metal Physics, Ural Branch; Yeltsin Ural Federal University
Email: kolodkin@imp.uran.ru
Rússia, ul. S. Kovalevskoi 18, Ekaterinburg, 620990; ul. Mira 19, Ekaterinburg, 620002
D. Kolodkin
Institute of Metal Physics, Ural Branch
Autor responsável pela correspondência
Email: kolodkin@imp.uran.ru
Rússia, ul. S. Kovalevskoi 18, Ekaterinburg, 620990
V. Gaviko
Institute of Metal Physics, Ural Branch; Yeltsin Ural Federal University
Email: kolodkin@imp.uran.ru
Rússia, ul. S. Kovalevskoi 18, Ekaterinburg, 620990; ul. Mira 19, Ekaterinburg, 620002
D. Vasilenko
Ural Electromechanical Plant
Email: kolodkin@imp.uran.ru
Rússia, ul. Studencheskaya 9, Ekaterinburg, 620137
A. Shitov
Ural Electromechanical Plant
Email: kolodkin@imp.uran.ru
Rússia, ul. Studencheskaya 9, Ekaterinburg, 620137
A. Vlasyuga
Ural Electromechanical Plant
Email: kolodkin@imp.uran.ru
Rússia, ul. Studencheskaya 9, Ekaterinburg, 620137
M. Govorkov
Ural Electromechanical Plant
Email: kolodkin@imp.uran.ru
Rússia, ul. Studencheskaya 9, Ekaterinburg, 620137
D. Bratushev
Ural Electromechanical Plant
Email: kolodkin@imp.uran.ru
Rússia, ul. Studencheskaya 9, Ekaterinburg, 620137