High coercivity (Nd8Y3)–(Fe62Nb3Cr1)–B23 magnets produced by injection casting
Source abstract
Abstract
High coercivity (Nd8Y3)–(Fe62Nb3Cr1)–B23 magnets in rods have been produced by copper mold injection casting. Magnetic properties, microstructure, and phase evolution in the as-cast and annealed states have been presented and discussed. The (Nd8Y3)–(Fe62Nb3Cr1)–B23 alloys show hard magnetic properties in the as-cast state. Annealing induces ideal microstructure containing magnetically hard and soft phases with hard/soft volume ratio of 73/27. Exchange coupling between magnetically hard (Nd,Y)2Fe14B phase and soft α-Fe (Fe3B) phase leads to excellent hard magnetic properties. Highest coercivity of 1230 kA/m in (Nd8Y3)–(Fe62Nb3Cr1)–B23 magnet originates from the large amount of hard phase with high magnetocrystalline anisotropy, formation of thin grain boundary phase and refinement of magnetic grains. Nb and Cr doping modify the magnetic phases. Annealed magnetic rods with a diameter of 2 mm and 36 mm in length demonstrated the maximum magnetic properties i.e., iHc of 1230 kA/m, Br of 0.49 T, and (BH)max of 45.6 kJ/m3.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Magnetic Properties of Alloys · Metallic Glasses and Amorphous Alloys · Rare-earth and actinide compounds
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (41)
Show source-provided references
1. Skomski R, Coey JMD (1993) Phys Rev B 48:1581210.1103/PhysRevB.48.15812 ↗
2. Schrefl T, Fidler J, Kronmüller H (1994) Phys Rev B 49:610010.1103/PhysRevB.49.6100 ↗
3. Manaf A, Buckley RA, Davies HA, Leonowicz M (1991) J Magn Magn Mater 101:36010.1016/0304-8853(91)90779-A ↗
4. Hirosawa S, Kanekiyo H, Uehara M (1993) J Appl Phys 73:648810.1063/1.352589 ↗
5. Chang HW, Hsieh CC, Gan JY, Cheng YT, Shih MF, Chang WC (2011) J Phys D Appl Phys 44:06400210.1088/0022-3727/44/6/064002 ↗
6. Xiong XY, Hono K, Hirosawa S, Kanekiyo H (2002) J Appl Phys 91:930810.1063/1.1474615 ↗
7. Chu Z, Yelon WB, Ma BM, Chen Z, Brown DN (2002) J Appl Phys 91:787810.1063/1.1453337 ↗
8. Ding J, McComick PG, Street R (1993) J Magn Magn Mater 124:110.1016/0304-8853(93)90060-F ↗
9. Smith PAI, Ding J, Street R, McComick PG (1996) Scripta Mater 3:461
10. Shultz L, (1999). In: Prinz G, Hajipanayis GC (eds) Science and technology of nanostructured materials, NATO ASI Series, vol 259, p 58310.1007/978-1-4899-2590-9_65 ↗
11. Hadjipanayis GC, Withanawasam L, Krause RF (1995) IEEE Trans Magn 31:359610.1109/20.489581 ↗
12. Yang F, Liu W, Lv XK, Liu XH, Guo S, Gong WJ, Zhang ZD (2009) Mater Lett 63:265210.1016/j.matlet.2009.09.026 ↗
13. Zhang J, Lim KY, Feng YP, Li Y (2007) Scripta Mater 56:94310.1016/j.scriptamat.2007.02.016 ↗
14. Zhanyong W, Wenqing L, Yanli S (2010) J Rare Earths 28:41710.1016/S1002-0721(10)60308-0 ↗
15. Liu Y, Xu L, Wang Q, Li W, Zhang X (2009) Appl Phys Lett 94:17250210.1063/1.3126444 ↗
16. Jiles DC (2003) Acta Mat 51:590710.1016/j.actamat.2003.08.011 ↗
17. Sultana D, Marinescu M, Zhang Y, Hadjipanayis GC (2006) Phys B 384:30610.1016/j.physb.2006.06.018 ↗
18. Zhang W, Inoue A (2002) Appl Phys Letts 80:161010.1063/1.1456259 ↗
19. Marinescu M, Chiriac H, Grigoras M (2005) J Magn Magn Mater 290–291:126710.1016/j.jmmm.2004.11.419 ↗
20. Tan XH, Xu H, Bai Q, Zhao WJ, Dong YD (2007) Appl Phys Lett 91:25250110.1063/1.2826281 ↗
21. Yin JH, Zhou YX, Tang SL, Tang W, Wang DH, Zhang JR, Du YW (1999) J Appl Phys 85:733610.1063/1.369358 ↗
22. Hirosawa S, Kanekiyo H, Miyoshi T, Shioya Y (2004) J Magn Magn Mater 239:5810.1016/j.jmmm.2004.03.046 ↗
23. Zhian C, Ji L, Yanli S, Zhimeng G (2010) J Rare Earths 28:277
24. Ahmad Z, Tao S, Ma T, Zhao G, Mi Yan (2011) J Alloys Compd 509:895210.1016/j.jallcom.2011.06.092 ↗
25. Kanekiyo H, Uehara M, Hirosawa S (1994) Mater Sci Eng A 181(182):86810.1016/0921-5093(94)90758-7 ↗
26. Harrison NJ, Davies HA, Todd I (2006) J Appl Phys 99(8):08B50410.1063/1.2162820 ↗
27. Hirosawa S, Kanekiyo H, Miyoshi T, Shigemoto Y, Murakami K, Senzaki Y, Nishiuchi T (2006) J Alloys Compd 260–265:408
28. Zhanyong W, Wenqing L, Bangxin Z, Jiansen N, Hui Xu, Yongzheng F, Minglin J (2009) Phys B 404:132110.1016/j.physb.2008.12.022 ↗
29. Schrefl T, Fidler J (1998) J Magn Magn Mater 970:177
30. Ahmad Z (2012) Synthesis, microstructure and magnetic properties of NdYFeNbB bulk nanocomposite permanent magnets. Post-doctoral Final Report, Zhejiang University, Hangzhou, China
31. Hanawalt D, Rinn HW, Frevel LK (1938) Ind Eng Chem Anal Ed 10:45710.1021/ac50125a001 ↗
32. Harold PK, Alexander LE (1973) X-ray diffraction procedures, 2nd edn. Wiley, Pittsburgh, p 687
33. Young RA, Sakthivel A, Moss TS, Paiva-Santos C (1995) J Appl Crystallogr 28:36610.1107/S0021889895002160 ↗
34. Lutterotti L, Scardi P, Maistrelli P (1990) J Appl Crystallogr 26:24610.1107/S0021889890002382 ↗
35. Kelly PE, Grady KO, Mayo PI, Cantrell RW (1989) IEEE Tran Magn 25:388110.1109/20.42466 ↗
36. Vajda F, Torre ED (1994) J Appl Phys 75:568910.1063/1.355638 ↗
37. Hadjipanayis GC (1999) J Magn Magn Mater 200:37310.1016/S0304-8853(99)00430-8 ↗
38. Ahmad Z, Tao S, Ma T, Yan M (2012) J Mater Res 27:72510.1557/jmr.2011.413 ↗
39. Ahmad Z, Tao S, Ma T, Yan M (2012) J Magn Magn Mater 324:153410.1016/j.jmmm.2011.11.060 ↗
40. Uehara M, Kono TJ, Kanekiyo H, Hirosawa S, Sumiyama K, Suzuki K (1998) J Magn Magn Mater 177:99710.1016/S0304-8853(97)00516-7 ↗
41. You CY, Ping DH, Hono K (2006) J Magn Magn Mater 299:13610.1016/j.jmmm.2005.03.097 ↗