Dependence of the magnetic properties of Zn bonded Sm{sub 2}Fe{sub 17}N{sub x} magnets on the particle size distribution

Journal Article · Mon Feb 28 23:00:00 EST 1994 · IEEE Transactions on Magnetics

DOI:https://doi.org/10.1109/20.312373· OSTI ID:37278

Wall, B; Katter, M; Rodewald, W; Velicescu, M ^[1]

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1. Vacuumschmelze GmbH, Hanau (Germany)

By adjusting the particle size distribution of the Sm{sub 2}Fe{sub 17} alloy-powder the density of cold isostatically pressed (p = 200 MPa) magnets as well as of die-pressed (p = 600 MPa) magnets could be improved up to 72% of the theoretical density. A remanent polarization and a coercivity of 0.77 T and 10.8 kA/cm could be achieved for Zn-bonded magnets containing 5 wt.% Zn. The temperature coefficients of Zn-bonded Sm{sub 2}Fe{sub 17}N{sub 3} magnets are superior compared to polymer-bonded Nd-Fe-B magnets and amount to {alpha}(J{sub r}) = {minus}0.06 %/K and {alpha}(H{sub cJ}) = {minus}0.36 %/K.

• OSTI ID: 37278
• Report Number(s): CONF-930860--
• Journal Information: IEEE Transactions on Magnetics, Journal Name: IEEE Transactions on Magnetics Journal Issue: 2Pt2 Vol. 30; ISSN IEMGAQ; ISSN 0018-9464
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
42 ENGINEERING
COMPARATIVE EVALUATIONS
INTERMETALLIC COMPOUNDS
IRON ALLOYS
MAGNETIC PROPERTIES
NITRIDATION
NITROGEN ADDITIONS
PERMANENT MAGNETS
SAMARIUM ALLOYS
ZINC