Magnetic hysteresis properties of melt-spun Nd–Fe–B alloys prepared by centrifugal method

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Magnetic hysteresis properties of melt-spun Nd–Fe–B alloys prepared by centrifugal method. / Andreev, S. V.; Kudrevatykh, N. V.; Pushkarsky, V. I. et al.
In: Journal of Magnetism and Magnetic Materials, Vol. 187, No. 1, 01.08.1998, p. 83-87.

Research output: Contribution to journal › Article › peer-review

BibTeX

@article{9035bf4c9b6847759fb0155f331a9090,

title = "Magnetic hysteresis properties of melt-spun Nd–Fe–B alloys prepared by centrifugal method",

abstract = "Magnetic hysteresis properties and micro structure peculiarities of melt spun Nd-Fe-B alloys (ribbons) prepared by melt quenching onto the internal surface of an iron spinning wheel at tangential speeds in the range 5-20 m/s are reported. The alloy composition was Nd-36% wt, B-1.2% wt. and Fe-remainder. It was found that the coercivity of ribbons does not practically depend on the wheel speed in applied range (18 kOe at 5 m/s and 22 kOe at 20 m/s), whereas the grain size of the basic phase (2-14-1) steadily decreases when the speed rises, starting from 2-3 μm for 5 m/s alloy down to the 200-300 nm for 20 m/s alloy. All ribbons have normal convex demagnetization curves, even those prepared at low wheel speeds (without peculiar step near H ∼ 0, which usually exists on such curves for traditionally prepared underquenched melt-spun Nd-Fe-B alloys). Grinding the ribbon in a vibration mill causes the coersivity drop to 7 kOe after 120 min of treatment. However, this operation increases the powder alignment ability and, as a result, the energy product for a fully dense magnet from anisotropic powder prepared from some ribbons rises to 20-23 MGOe.",

author = "Andreev, {S. V.} and Kudrevatykh, {N. V.} and Pushkarsky, {V. I.} and Markin, {P. E.} and Zaikov, {N. K.} and Tarasov, {E. N.}",

note = "This work was partially supported by the Russian Ministry of High Education by the grant in Metallurgy Sciences G-0001.",

year = "1998",

month = aug,

day = "1",

doi = "10.1016/S0304-8853(97)01145-1",

language = "English",

volume = "187",

pages = "83--87",

journal = "Journal of Magnetism and Magnetic Materials",

issn = "0304-8853",

publisher = "Elsevier BV",

number = "1",

}

RIS

TY - JOUR

T1 - Magnetic hysteresis properties of melt-spun Nd–Fe–B alloys prepared by centrifugal method

AU - Andreev, S. V.

AU - Kudrevatykh, N. V.

AU - Pushkarsky, V. I.

AU - Markin, P. E.

AU - Zaikov, N. K.

AU - Tarasov, E. N.

N1 - This work was partially supported by the Russian Ministry of High Education by the grant in Metallurgy Sciences G-0001.

PY - 1998/8/1

Y1 - 1998/8/1

N2 - Magnetic hysteresis properties and micro structure peculiarities of melt spun Nd-Fe-B alloys (ribbons) prepared by melt quenching onto the internal surface of an iron spinning wheel at tangential speeds in the range 5-20 m/s are reported. The alloy composition was Nd-36% wt, B-1.2% wt. and Fe-remainder. It was found that the coercivity of ribbons does not practically depend on the wheel speed in applied range (18 kOe at 5 m/s and 22 kOe at 20 m/s), whereas the grain size of the basic phase (2-14-1) steadily decreases when the speed rises, starting from 2-3 μm for 5 m/s alloy down to the 200-300 nm for 20 m/s alloy. All ribbons have normal convex demagnetization curves, even those prepared at low wheel speeds (without peculiar step near H ∼ 0, which usually exists on such curves for traditionally prepared underquenched melt-spun Nd-Fe-B alloys). Grinding the ribbon in a vibration mill causes the coersivity drop to 7 kOe after 120 min of treatment. However, this operation increases the powder alignment ability and, as a result, the energy product for a fully dense magnet from anisotropic powder prepared from some ribbons rises to 20-23 MGOe.

AB - Magnetic hysteresis properties and micro structure peculiarities of melt spun Nd-Fe-B alloys (ribbons) prepared by melt quenching onto the internal surface of an iron spinning wheel at tangential speeds in the range 5-20 m/s are reported. The alloy composition was Nd-36% wt, B-1.2% wt. and Fe-remainder. It was found that the coercivity of ribbons does not practically depend on the wheel speed in applied range (18 kOe at 5 m/s and 22 kOe at 20 m/s), whereas the grain size of the basic phase (2-14-1) steadily decreases when the speed rises, starting from 2-3 μm for 5 m/s alloy down to the 200-300 nm for 20 m/s alloy. All ribbons have normal convex demagnetization curves, even those prepared at low wheel speeds (without peculiar step near H ∼ 0, which usually exists on such curves for traditionally prepared underquenched melt-spun Nd-Fe-B alloys). Grinding the ribbon in a vibration mill causes the coersivity drop to 7 kOe after 120 min of treatment. However, this operation increases the powder alignment ability and, as a result, the energy product for a fully dense magnet from anisotropic powder prepared from some ribbons rises to 20-23 MGOe.

UR - http://www.scopus.com/inward/record.url?partnerID=8YFLogxK&scp=0032138795

U2 - 10.1016/S0304-8853(97)01145-1

DO - 10.1016/S0304-8853(97)01145-1

M3 - Article

VL - 187

SP - 83

EP - 87

JO - Journal of Magnetism and Magnetic Materials

JF - Journal of Magnetism and Magnetic Materials

SN - 0304-8853

IS - 1

ER -

ID: 54641985