Influence of milling conditions on magnetic properties of Sm{sub 2}Fe{sub 17}N{sub 3} particles

Journal Article · Tue Oct 31 23:00:00 EST 1995 · IEEE Transactions on Magnetics

DOI:https://doi.org/10.1109/20.489700· OSTI ID:186952

Tajima, Shin; Hattori, Takeshi; Kato, Yoshio ^[1]

---

1. Toyota CRDL, Nagakute, Aichi (Japan)

Ball milling conditions were examined for the preparation of fine Sm{sub 2}Fe{sub 17}N{sub 3} particles. The milling process with high ball/bottle volume ratio produced Sm{sub 2}Fe{sub 17}N{sub 3} particles with low {sub i}H{sub c} and 4{pi}I{sub r} and {sub i}H{sub c} were attributed to particle aggregates which were formed during the milling. The addition of a surfactant (e.g. polystearic acid) prevented aggregation in the ball milling, and yielded high-performance Sm{sub 2}Fe{sub 17}N{sub 3} (4{pi}I{sub r}: 14.1 kG, {sub i}H{sub c}: 9 kOe, (BH)max: 34 MGOe); cf. (BH)max = 20 MGOe for typical epoxy-bonded magnets.

• OSTI ID: 186952
• Report Number(s): CONF-950404--
• Journal Information: IEEE Transactions on Magnetics, Journal Name: IEEE Transactions on Magnetics Journal Issue: 6Pt2 Vol. 31; ISSN IEMGAQ; ISSN 0018-9464
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
COERCIVE FORCE
EXPERIMENTAL DATA
IRON NITRIDES
MAGNETIC PROPERTIES
MAGNETIZATION
MILLING
PERMANENT MAGNETS
SAMARIUM NITRIDES