DocumentCode
1072164
Title
Modified Sm2Fe17Ny permanent magnets
Author
Wendhausen, P.A.P. ; Hu, Bo-Ping ; Handstein, A. ; Eckert, D. ; Pitschke, W. ; Muller, K.-H.
Author_Institution
Inst. fuer Festkorper- und Werkstofforschung Dresden, Germany
Volume
29
Issue
6
fYear
1993
fDate
11/1/1993 12:00:00 AM
Firstpage
2824
Lastpage
2826
Abstract
The substitution of elements M (M=Nb, V, Ti, Co) for Fe in Sm2Fe17Ny is investigated regarding its structural and magnetic properties. Zn-bonding as well as milling of Sm 2(Fe1-xMx)17Ny is studied as a means of improving the properties of their corresponding permanent magnets. Co-substitution improves the temperature dependence of remanence while V-containing magnets show a better shape of the demagnetization curve. Additional milling of nitrides enhances the coercivity, due to pinning of domain walls or to single domain particle behavior. Zn bonding of very fine Sm2Fe17Ny powders, followed by heat treatment, e.g., 425 °C for 100 min, leads to an overall decrease of the permanent-magnet properties caused by the formation of α-Fe
Keywords
cobalt alloys; coercive force; demagnetisation; ferromagnetic properties of substances; heat treatment; iron alloys; magnetic domain walls; magnetic properties of fine particles; niobium alloys; permanent magnets; precipitation; remanence; samarium alloys; titanium alloys; vanadium alloys; α-Fe; 100 mins; 425 degC; Sm2(FeCo)17Nx; Sm2(FeNb)17Nx; Sm2(FeTi)17Nx; Sm2(FeV)17Nx; Sm2Fe17Ny permanent magnets; Zn-bonding; coercivity; demagnetization curve; heat treatment; magnetic properties; milling; nitrides; permanent magnets; remanence; single domain particle behavior; temperature dependence; Coercive force; Demagnetization; Iron; Magnetic properties; Milling; Permanent magnets; Remanence; Shape; Temperature dependence; Zinc;
fLanguage
English
Journal_Title
Magnetics, IEEE Transactions on
Publisher
ieee
ISSN
0018-9464
Type
jour
DOI
10.1109/20.281065
Filename
281065
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