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According to nominal composition (PrNd)xAl0.6Nb0.5Cu0.15B1.05Fe97.7-x(weight percentage), the sintered NdFeB magnets are prepared by melting processing, milling processing, moulding processing and sintering processing. Microstructures and properties of these bulk samples at different high pressures are tested. It is shown that with pressure increasing, appearance and microstructure of samples are destroyed, but their inoxidizability at high temperature is increased, although their flexure strength is badly reduced. On the other hand, there are more excellent magnetic properties of bulk NdFeB samples pressed at high pressures (1.5 GPa and 3.0 GPa) than those of this bulk samples without being pressed. For example, values of their maximum magnetic energy products are increased by 7.69 kJ·m-3 and 0.94 kJ·m-3 respectively, and values of their remanence are increased by 0.02 T and 0.01 T respectively, in addition, the values of their intrinsic coercive force are increased by 20.06 kA·m-1 and 30.33 kA·m-1 respectively. It is ind that high pressure has some effects on microstructure, mechanical and magnetic property of the bulk NdFeB alloy.
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Keywords:
- NdFeB alloy /
- high pressure /
- microstructure /
- property
[1] Meng Z H, Li J B, Guo Y Q, Wang Y 2012 Acta Phys. Sin. 61 107101 (in Chinese) [孟振华, 李俊斌, 郭永权, 王义 2012 61 107101]
[2] Hyo Jun Kim, Dong Hwan Kim, Andrew S Kim, Sang Myun Kim, Chang Seop Koh, Gyu-Hong Kang 2006 J. Iron Steel Research, International 13 411
[3] Basak A, Anayi F J 1992 J. Magn. Magn. Mate. 112 426
[4] Slusarek B, Dudzikowski I 2002 J. Magn. Magn. 239 597
[5] Li H, Chen Z 2009 Renew Energ 34 1175
[6] Guo F, Tang Y, Ren L, Li J 2010 Physica C: Superconductivity 470 1787
[7] Zhang L C, Wang J S, He Q Y, Zhang J H, Wang S Y 2007 Physica C: Superconductivity 459 33
[8] Singh A K, Liermann H P, Akahama Y, Saxena S K, Menendez-Proupin E 2007 J. Appl. Phys. 101 123526
[9] Klotz S, Besson J M, Hamel G, Nelmes R J, Loveday J S, MarshallW G, Wilson R M 1995 Appl. Phys. Lett. 66 1735
[10] Guan J W, He D W, Wang W D, Wang H K, Peng F, Xu C, Wang K X, He K 2012 Acta Phys. Sin. 61 100701 (in Chinese) [管俊伟, 贺端威, 王海阔, 彭放, 许超, 王文丹, 王凯雪, 贺凯 2012 61 100701]
[11] Dunstan D J 1989 Rev. Sci. Instrum. 60 3789
[12] Grnberger W, Hinz D, Schläfer D, Schultz L 1996 J. Magn. Magn. Mater. 157-158 41
[13] Wei C F, Tang J, Yang L R, Zhao D W 2011 J. Magn. Mater. Device 42 22 (in Chinese) [魏成富, 唐杰, 张林, 杨梨容, 赵导文 2011 磁性材料及器件 42 20]
[14] Buschow K H J 1986 Materials Science Reports 1 1
[15] Gao R W, Zhang D H, Li W, Zhang J C 2000 J. Magn. Magn. Mater. 208 239
[16] Mendoza-Suárez G, Davies H A, Escalante-Garcíi J I 2000 J. Magn. Magn. Mater. 218 97
[17] Kronmller H, Durst K D, Sagawa M 1998 J. Magn. Magn. Mater. 74 291
[18] Kronmller H 2001 Encyclopedia of Materials: Science and Technology 2 1295
[19] Forkl A, Pastushenkov J, Maki K, Kronmller H 1991 J. Magn. Magn. Mater. 101 367
[20] Martinek G, Kronmller H 1990 J. Magn. Magn. Mater. 86 177
[21] Blank R 1991 J. Magn. Magn. Mater. 101 317
[22] Pan M X, Zhang P Y, Li X J, Ge H L, Wu Q Jiao Z W, Liu T T 2010 J. Rare Earth 28 399
[23] Mo W J, Zhang L T, Liu Q Z, Shan A D, Wu J S, Matahiro Komuro, Shen L P 2008 J. Rare Earth 26 268
[24] Minowa T, Shimao M, Honshima M 1991 J. Magn. Magn. Mater. 97 107
[25] Yang J P, Pi S H, Kim Y P 1992 J. Magn. Magn. Mater. 110 L261
[26] Jin Z Z, Bao Y W 1996 Designing and Evaluating on Mechanical Property of Fragile Material (Beijing: China Railway Press) p143 (in Chinese) [金宗哲, 包亦望 1996 脆性材料力学性能设计与评价 (北京: 中国铁路出版社)第143页]
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[1] Meng Z H, Li J B, Guo Y Q, Wang Y 2012 Acta Phys. Sin. 61 107101 (in Chinese) [孟振华, 李俊斌, 郭永权, 王义 2012 61 107101]
[2] Hyo Jun Kim, Dong Hwan Kim, Andrew S Kim, Sang Myun Kim, Chang Seop Koh, Gyu-Hong Kang 2006 J. Iron Steel Research, International 13 411
[3] Basak A, Anayi F J 1992 J. Magn. Magn. Mate. 112 426
[4] Slusarek B, Dudzikowski I 2002 J. Magn. Magn. 239 597
[5] Li H, Chen Z 2009 Renew Energ 34 1175
[6] Guo F, Tang Y, Ren L, Li J 2010 Physica C: Superconductivity 470 1787
[7] Zhang L C, Wang J S, He Q Y, Zhang J H, Wang S Y 2007 Physica C: Superconductivity 459 33
[8] Singh A K, Liermann H P, Akahama Y, Saxena S K, Menendez-Proupin E 2007 J. Appl. Phys. 101 123526
[9] Klotz S, Besson J M, Hamel G, Nelmes R J, Loveday J S, MarshallW G, Wilson R M 1995 Appl. Phys. Lett. 66 1735
[10] Guan J W, He D W, Wang W D, Wang H K, Peng F, Xu C, Wang K X, He K 2012 Acta Phys. Sin. 61 100701 (in Chinese) [管俊伟, 贺端威, 王海阔, 彭放, 许超, 王文丹, 王凯雪, 贺凯 2012 61 100701]
[11] Dunstan D J 1989 Rev. Sci. Instrum. 60 3789
[12] Grnberger W, Hinz D, Schläfer D, Schultz L 1996 J. Magn. Magn. Mater. 157-158 41
[13] Wei C F, Tang J, Yang L R, Zhao D W 2011 J. Magn. Mater. Device 42 22 (in Chinese) [魏成富, 唐杰, 张林, 杨梨容, 赵导文 2011 磁性材料及器件 42 20]
[14] Buschow K H J 1986 Materials Science Reports 1 1
[15] Gao R W, Zhang D H, Li W, Zhang J C 2000 J. Magn. Magn. Mater. 208 239
[16] Mendoza-Suárez G, Davies H A, Escalante-Garcíi J I 2000 J. Magn. Magn. Mater. 218 97
[17] Kronmller H, Durst K D, Sagawa M 1998 J. Magn. Magn. Mater. 74 291
[18] Kronmller H 2001 Encyclopedia of Materials: Science and Technology 2 1295
[19] Forkl A, Pastushenkov J, Maki K, Kronmller H 1991 J. Magn. Magn. Mater. 101 367
[20] Martinek G, Kronmller H 1990 J. Magn. Magn. Mater. 86 177
[21] Blank R 1991 J. Magn. Magn. Mater. 101 317
[22] Pan M X, Zhang P Y, Li X J, Ge H L, Wu Q Jiao Z W, Liu T T 2010 J. Rare Earth 28 399
[23] Mo W J, Zhang L T, Liu Q Z, Shan A D, Wu J S, Matahiro Komuro, Shen L P 2008 J. Rare Earth 26 268
[24] Minowa T, Shimao M, Honshima M 1991 J. Magn. Magn. Mater. 97 107
[25] Yang J P, Pi S H, Kim Y P 1992 J. Magn. Magn. Mater. 110 L261
[26] Jin Z Z, Bao Y W 1996 Designing and Evaluating on Mechanical Property of Fragile Material (Beijing: China Railway Press) p143 (in Chinese) [金宗哲, 包亦望 1996 脆性材料力学性能设计与评价 (北京: 中国铁路出版社)第143页]
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