The source of free iron in zinc-bonded permanent magnets based on Sm/sub 2/Fe/sub 17/N/sub x

The principal phase resulting from the reaction of Sm/sub 2/Fe/sub 17/ with zinc is a solution of Sm in Gamma -Fe-Zn. At the maximum Sm content, this cubic phase with alpha =0.8984 nm has an approximate composition of (at.%) 5 Sm, 42 Fe, 53 Zn, and has no permanent magnetic moment between 4.2 and 60...

Full description

Saved in:
Bibliographic Details
Published inIEEE transactions on magnetics Vol. 29; no. 6; pp. 2830 - 2832
Main Authors Reinsch, B., Stadelmaier, H.H., Petzow, G.
Format Journal Article
LanguageEnglish
Published IEEE 01.11.1993
Subjects
Diffraction
Iron
Isothermal processes
Magnetic analysis
Magnetic moments
Permanent magnets
Reflection
Samarium
Temperature
Zinc
Online AccessGet full text

Cover

More Information
Summary:The principal phase resulting from the reaction of Sm/sub 2/Fe/sub 17/ with zinc is a solution of Sm in Gamma -Fe-Zn. At the maximum Sm content, this cubic phase with alpha =0.8984 nm has an approximate composition of (at.%) 5 Sm, 42 Fe, 53 Zn, and has no permanent magnetic moment between 4.2 and 600 K. The phase equilibria of the low-Sm alloys in Sm-Fe-Zn show that isostructural Sm/sub 2/Fe/sub 17/ and Sm/sub 2/Zn/sub 17/ are not miscible and that, because of the pervasiveness of equilibria with alpha -Fe, it will be difficult to eliminate alpha -Fe completely from Zn bonded magnets.< >
ISSN:0018-9464
1941-0069
DOI:10.1109/20.281067