Sm2Fe17Nx Produced by Calciothermic Reduction Using Different Iron Powders


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This paper compared the influence of the iron powder in the production of Sm2Fe17Nx by calciothermic reduction. Two available iron powders were used: Basf CL carbonyl iron and Ancor MH-100 sponge iron. Both alloys were prepared and analyzed with X-ray diffraction, scanning electronic microscope and vibrating sample magnetometer. The results showed that the alloy produced with Ancor Mh-100 presents a higher anisotropy. The alloy produced with Basf CL has a smaller anisotropy but a higher coercivity. This can be explained by the difference in the microstructure of the two powders.



Materials Science Forum (Volumes 530-531)

Edited by:

Lucio Salgado and Francisco Ambrozio Filho




J.C. Boareto et al., "Sm2Fe17Nx Produced by Calciothermic Reduction Using Different Iron Powders", Materials Science Forum, Vols. 530-531, pp. 187-190, 2006

Online since:

November 2006




[1] J. M. D. COEY, H. SUN, Y. OTANI. A New Family of Rare Iron Nitrides. Proceedings of the Sixth International Symposium on Magnetic Anisotropy and Corcivity in Rare Earth - Transition Metal Alloys, Pittsburg, Pennsylvania, (1990).

[2] A. VERMA, R.K. SIDHU, S. MAHAJAN*, O.P. PANDEY*. Effect of Excess Samarium Oxide on the Preparation of Sm2Fe17 Powder by Calciothermic Reduction. Journal of materials Science Letters 15(1996) 2088-(2090).

[3] A. W. Taylor, R. P. Fernandes, P. A. P. Wendhausen. Characterization of Sm2Fe17 Reduction - Diffusion Process, LABMAT - UFSC.

[4] A. M. A. R. V. Liberal, J. C. Boareto, J. Soyama, P. A. P. Wendhausen, M. D. V. Felisberto, R. P. Fernandes. Avaliação da Influência e Temperatura da Produção da Liga Sm2Fe17 Através do Processo de Redução Calciotérmica. 5ª SEPEX - Semana de Ensino Pesquisa e Extensão - Setembro 2005, UFSC, Florianópolis, Brazil.

[5] S. Brennan Kobayashi, J. M. D. Coey, 13Th Int. Workshop on R E Magnets and Their Application, Birminghan, UK, Sept. (1994), pag. 795.