Microstructure and Magnetic Properties of (Nd_1-2xPr_xY_x)_2.28Fe_13.58B_1.14 Melt-Spun Alloys

Abstract:

As a rapid solidification technology, strip casting (SC) technology is one of importance method in the production of Nd₂Fe₁₄B-based rare-earth permanent magnets. (Nd_1-2xPr_xY_x)_2.28Fe_13.58B_1.14 (x=0.05, 0.10, 0.15, 0.20) alloys prepared by arc melting method under an argon atmosphere were annealed at 1173 K for 360 hrs and then were investigated by scanning electron microscopy (SEM), X-ray diffraction (XRD) and Differential Scanning Calorimetry (DSC). Magnetic properties of the ribbons prepared by melt-spinning method with high cooling rate were measured by Physical Property Measurement System (PPMS). The XRD and SEM results showed that the annealed (Nd_1-2xPr_xY_x)_2.28Fe_13.58B_1.14 (x=0.10, 0.15, 0.20) alloys had a single phase with tetragonal Nd2Fe14B-tpyed structure, while the annealed (Nd_0.90Pr_0.05Y_0.05)_2.28Fe_13.58B_1.14 alloy contained Nd2Fe14B phase and α-Fe secondary phase. On the other hand, the coercivities (H_cj) of (Nd_1-2xPr_xY_x)_2.28Fe_13.58B_1.14 (x=0.05, 0.10, 0.15, 0.20) melt-spun alloys were about 13.42 kOe, 13.49 kOe, 7.97 kOe and 8.36 kOe, respectively, while the remanences (B_r) of the alloys were 7.52 kGs, 7.48 kGs, 9.14 kGs and 7.48 kGs, respectively. In addition, The Curie temperature (Tc) of the annealed (Nd_1-2xPr_xY_x)_2.28Fe_13.58B_1.14 (x=0.05, 0.10, 0.15, 0.20) alloys were determined to be 573 K, 574 K, 579 K and 580 K, respectively.

• Periodical: Materials Science Forum (Volume 898)
• Pages: 1242-1246
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.898.1242
• Online since: June 2017
• Authors: M.H. Rong, J. Ma, Jiang Wang*, H.Y. Zhou, G.H. Rao
• Keywords: Melt-Spun Ribbons, Nd-Fe-B, Permanent Magnets, Rapid Solidification

References

[1] A. Castellero, D.H. Kang, I. H. Jung, G. Angella, J. Alloy Compd. 536 (2014) 111-116.

[2] C.F. Sánchez-Valdés, P.J. Ibarra-Gaytán, J.L. Llamazares, M. Ávalos-Borja, Appl. Phys. Lett. 104 (2014) 212401.

[3] M. Sagawa, S. Fujimura, N. Togawa, H. Yamamoto, Y. Matsuura, J. Appl. Phys. 55 (1984) 2083-(2084).

[4] Z.B. Li , B.G. Shen, M. Zhang, F.X. Hu, J.R. Sun, J. Alloy Compd. 628 (2015) 325-328.

[5] M. Zhang, Z.B. Li, B.G. Shen, F.X. Hu, J.R. Sun. J. Alloy Compd. 651 (2015) 144-148.

[6] A.K. Pathak, M. Khan, K.A. Gschneidner, R.W. McCallum, L. Zhou, K. Sun, K.W. Dennis, C. Zhou, F.E. Pinkerton, M. J. Kramer, V. K. Pecharsky, Adv. Mater. 27 (2015) 2663-2667.

DOI: 10.1002/adma.201404892

[7] Z. Li, W.Q. Liu, S.S. Zha, Y.Q. Li, Y.Q. Wang, D.T. Zhang, M. Yue, J.X. Zhang, X.L. Huang. J. Magn. Magn. Mater. 393 (2015) 551-554.

[8] K. Pei, M. Lin, Aru. Yan, X. Zhang. J. Magn. Magn. Mater. 406 (2016) 239-243.

[9] X.C. Wang, M.G. Zhu, W. Li, L.Y. Zheng, D, L. Zhao, X. Du. J. Electron. Mater. Lett. 11 (2015) 109-112.

[10] X.D. Fan, S. Guo, K, Chen, R. J. Chen, D. Lee, C. Y. You. J. Magn. Magn. Mater. 419 (2016) 394-399.

[11] Z. Li, W.Q. Li, S.S. Zha, Y.Q. Li, Y.Q. Wang, D.T. Zhang, M. Y, J.X. Zhang. J. Rare. Earth. 33 (2015) 961-964.

[12] M.G. Zhu , W. Li, J.D. Wang , L.Y. Zheng , Y.F. Li , K. Zhang , H.B. Feng, T. Liu. IEEE. T. Mag. 50 (2014) 1-4.

[13] K. Pei, X. Zhang. M. Lin, Aru. Yan,. J. Magn. Magn. Mater. 398 (2016) 96-100.

[14] M. Hussain, L.Z. Zhao, C. Zhang, D.L. Jiao, X.C. Zhong, Z.W. Liu. Phys. B. 483 (2016).

[15] M. Hussain, J.L. Liu, Z. Zhao, J. Magn. Magn. Mater. 399 (2016) 26-31.

[16] W. Fernengel, J. Magn. Magn. Mater. 83 (1990) 201-202.

[17] H. Kato, T. Nomura, M. Kubota, T. Miyazaki, M. Motokawa, J. Appl. Phys. 6125 (2000) 87.

[18] G. Fu, J. Wang, M.H. Rong, G.H. Rao. Mater. Sci. Forum. 848 (2016) 709-714.

[19] S. Madeswaran, S. Tamano, S. Goto, and K. Tokiwa. J. Appl. Phys. 012014 (2010). 232-233.