Zr-Rich Phases in Sm(CoFeCuZr)z Magnets

Abstract:

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Sm(CoFeCuZr)z commercial magnets are manufactured by powder metallurgy techniques. Microstructural investigations of Sm(CoFeCuZr)z magnets have shown that, increasing the Zr content, some impurity phases may appear. An alloy with composition (at%): 60.5% Co – 15.5% Fe – 11.5% Zr - 8.5% Sm - 4% Cu, homogenized at 1050oC, was investigated. Three main phases were identified: rhombohedral 1:3 (ZrSm)1(CoFeCu)3, hexagonal 1:7 (SmZr)1(CoFeCu)7 and cubic 6:23 (Zr)6(CoFe)23. Knowledge of possible phases present in 2:17-type magnets allows a better understanding of the nanocrystalline microstructure responsible for high coercivity of these magnets.

Info:

Periodical:

Materials Science Forum (Volumes 530-531)

Edited by:

Lucio Salgado and Francisco Ambrozio Filho

Pages:

158-163

DOI:

10.4028/www.scientific.net/MSF.530-531.158

Citation:

M. F. de Campos et al., "Zr-Rich Phases in Sm(CoFeCuZr)z Magnets", Materials Science Forum, Vols. 530-531, pp. 158-163, 2006

Online since:

November 2006

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Price:

$35.00

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