Synthesis of Hard Magnetic Material from Secondary Resources

Authors: M. Bahgat, F. M. Awan, H. A. Hanafy, O. N. Alzeghaibi

Abstract:

Strontium hexaferrite (SrFe12O19; Sr-ferrite) is one of the well-known materials for permanent magnets. In this study, Mtype strontium ferrite was prepared by following the conventional ceramic method from steelmaking by-product. Initial materials; SrCO3 and by-product, were mixed together in the composition of SrFe12O19 in different Sr/Fe ratios. The mixtures of these raw materials were dry-milled for 6h. The blended powder was presintered (i.e. calcination) at 1000°C for different times periods, then cooled down to room temperature. These pre-sintered samples were re-milled in a dry atmosphere for 1h and then fired at different temperatures in atmospheric conditions, and cooled down to room temperature. The produced magnetic powder has a dense hexagonal grain shape structure. The calculated energy product values for the produced samples ranged from 0.3 to 2.4 MGOe.

Keywords: Ceramic route, Hard magnetic materials, Strontium ferrite.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1094713

References:

[1] Global Industry Analysts, Inc. Report http://www.prnewswire.com/ news-releases/global-market-for-magnetic-materials by-2018-developing-countries-to-drive-high-performan finishing-chemicals-to-reach-85-bn-177729081.html
[2] Global Industry Analysts, Inc. Report http://www.prweb.com/releases/ magnetic/materials/prweb4688474.htm
[3] Oliver Gutfl eisch, Matthew A. Willard , Ekkes Brück, Christina H. Chen, S. G. Sankar, and J. Ping Liu, Adv. Mater. 842.
[4] US Magnetic Materials Association, /documents/usmma-presentation 2010).
[5] Yang Luo, Proc. 20 th Int. Workshop on Rare Earth Permanent Magnets and Their Applications , (Ed: D. Niarchos), 2008 , 27 .
[6] R. Valenzuela, Magnetic Ceramics, Cambridge University Press, New York, 1994.
[7] K.H.J. Buschow, F.R. De Boer Materials, Kluwer Academic, Plenum Publishers, London, 2003.
[8] A. Rafferty, T. Prescott, D. Brabazon, Sintering behaviour of cobalt ferrite ceramic, Ceramics International 34 (2008) 15
[9] Sukhleen Bindra Narang and I. S. Processing Research, vol. 7, No. 2, (2006) 113
[10] J.F. Wang, C.B. Ponton, I.R. Harris, J. Magn. Magn. Mater. 298 (2006) 122.
[11] A. Collomb, B. Lambert Andron, J.X. Boucherle, D. Samaras, Phys. Stat. sol. (A) 96 (1986) 385
[12] A. Ataie and S. Heshmati Manesh, J. Eur. Ceram. Soc., vol. 21 (2001) 1951.
[13] D. H. Chen and Y. Y. Chen, Mater. Res. Bull., vol. 37 (2002) 801.
[14] Z.F. Zi a,b,c, Y.P. Sun a,b, X.B. Zhu a,b, Z.R. Yang a,b, J.M. dai a,b, W.H. Song, Journal of Magnetism and Magnetic Mater 2746– 2751
[15] J.M.D. Coey, J. Alloys Compd. 326 (2001) 2.
[16] P.E. Kazin, L.A. Trusov, D.D. Zaitsev, Yu.D. Tretyakov, M. Jansen, J. Magn. Magn. Mater. 320 (2008) 1068.
[17] A. Morisako, T. Naka, K. Ito, A. Takizawa, M. Matsumoto, K.Y. Hong, J. Magn. Magn. Mater. 242 (2002) 304.
[18] Muhammad Javed Iqbal, Muhammad Naeem Ashiq, Pablo Hernandez Gomez, Jose Maria Munoz, J. Magn. Magn. Mater. 320 (2008) 881
[19] Y. Wu, Z.W. Li, L. Chen, S.J. Wang, C.K. Ong, J. Appl. Phys. 95 (2004) 8.
[20] P.C.A. Brito, R.F. Gomes, J.G.S. (2006) 91.
[21] Ali Ghasemi, Akimitsu Morisako, J. Magn. Magn. Mater. 320 (2008) 1167.
[22] H. How, X. Zuo, C.V. Wave, IEEE Trans. Magn. 41 (2005) 2349.
[23] Z.B. Guo, W.P. Ding, W. Zhong, J.R. Zang, Y.W. Do, J. Magn. Magn. Mater. 175 (1997) 333.
[24] W.A. Kaczmarek, B. Idzikowski, K.H. Muller, J. Magn. Magn. Mater. 177 (1998) 921.
[25] S.V. Ketov, Yu.D. Yagodkin, A.L. Lebed, Yu.V. Chernopyatova, K. Khlopkov, J. Magn. Magn. Mater. 300 (2006) e479.
[26] L. Qiao, L.H. You, J.W. Zheng, L.Q. Jiang, J.W. S Mater. 318 (2007) 74.
[27] V.V. Pankov,M. Pernet, P. Germi, P. Mollard, J.Magn.Magn.Mater. 120 (1993) 69.
[28] Wandee Onreabroy a,*, Komane Papato a, Gobwute Rujijanagul b, Kamonpan Pengpat b, Tawee Tunkasiri b, Ceramics International 38S (2012) S415–S419