Properties of Nd-Fe-B Powder Explosively Compacted

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Abstract:

Nd-Fe-B magnets are used in wide range of industrial applications. In this research we studied the possibility of producing bulk Nd-Fe-B magnetic compact by using the direct cylinder explosive compaction. After compaction the density of compact was measured by the Archimedes method. Highly dense compact (> 98% relative density) without cracks was obtained by this technique. A concentric hole was observed at center of some compacts. The magnetic properties of the compact are Br=7.95KG, iHc=10.5kOe, (BH)max= 14MOe, and these values are same as those before explosive compaction.

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237-242

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January 2011

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© 2011 Trans Tech Publications Ltd. All Rights Reserved

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[1] Y. Matsuura, Recent development of Nd-Fe-B sintered magnets and their applications, Journal of Magnetism and Magnetic Materials, Vol. 303 (2006), p.344.

DOI: 10.1016/j.jmmm.2006.01.171

Google Scholar

[2] W. Liu, J. Wu, Mechanical properties and fracture mechanism study of sintered Nd-Fe-B alloy, Journal of Alloy and Compounds, Vol. 458 (2008), p.292.

DOI: 10.1016/j.jallcom.2007.04.277

Google Scholar

[3] A. Li, W. Li, S. Dong, X. Li, Sintered Nd-Fe-B magnets with high strength, Journal of Magnetism and Magnetic Materials, Vol. 265 (2003), p.331.

DOI: 10.1016/s0304-8853(03)00283-x

Google Scholar

[4] S. Ando, Y. Mine, K. Takashima, S. Itoh, H. Tonda, Explosive compaction of Nd-Fe-B powder, Journal of Materials Processing technology Vol. 85 (1999), p.142.

DOI: 10.1016/s0924-0136(98)00279-9

Google Scholar

[5] K. Sivakumar, P. S. Raj, T. B. Bhat, K. Hokomato, Journal of Material Processing Technology, Vol. 37 (2002), p.4073.

Google Scholar

[6] E. P. Carton, in: Dynamic Compaction of Ceramic and Composites, Pubished by Delft University Press, Netherlands, (1997).

Google Scholar

[7] N. A. Kostyukov and G. E. Kuz, min : Metallurgical and Materials Applications of Shock wave and High-Strain-Rate Phenomena, L. E. Murr, K. P. Staudhammer and M. A. Meyers(eds), Elsevier, Amsterdam, (1995).

DOI: 10.21236/ada248665

Google Scholar

[8] H. L. Cooker, M. A. Meyers and J. F. Wessels, Journal of Material Science, Vol. 26 (1991), p.1277.

Google Scholar