Corrosion-Resistant Nd-TM-B Magnet

M. Shimotomai; Y. Fukuda; A. Fujita; Y. Ozaki

doi:10.1109/20.104577

Corrosion-Resistant Nd-TM-B Magnet

M. Shimotomai, Y. Fukuda, A. Fujita, Y. Ozaki

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

31 Citations (Scopus)

Abstract

In search for a compatibility of magnetic properties and corrosion resistance, a pseudo-ternary system Nd-(Fe1-x-yCoxNiy)-B was studied in forms of melt-spun ribbons and sintered bodies. It has been found that the double substitutions with 0.2≤x≤0.45 and 0.05≤y≤0.25 in the composition of ordinary NdFeB magnet yield good corrosion resistance and also preserve moderate coercivity values. A further small, substitution of Ti atoms for Fe atoms enhances the coercivity and makes the demagnetization curve rectangular. For example, (BH)max and iHc in sintered magnets of Nd15(Fe.585Co.3Ni.1Ti.015)77B8 have amounted to 34 MGOe and 10.4 kOe, respectively.

Original language	English
Pages (from-to)	1939-1941
Number of pages	3
Journal	IEEE Transactions on Magnetics
Volume	26
Issue number	5
DOIs	https://doi.org/10.1109/20.104577
Publication status	Published - Sep 1990
Externally published	Yes

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Electrical and Electronic Engineering

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10.1109/20.104577

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abstract = "In search for a compatibility of magnetic properties and corrosion resistance, a pseudo-ternary system Nd-(Fe1-x-yCoxNiy)-B was studied in forms of melt-spun ribbons and sintered bodies. It has been found that the double substitutions with 0.2≤x≤0.45 and 0.05≤y≤0.25 in the composition of ordinary NdFeB magnet yield good corrosion resistance and also preserve moderate coercivity values. A further small, substitution of Ti atoms for Fe atoms enhances the coercivity and makes the demagnetization curve rectangular. For example, (BH)max and iHc in sintered magnets of Nd15(Fe.585Co.3Ni.1Ti.015)77B8 have amounted to 34 MGOe and 10.4 kOe, respectively.",

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T1 - Corrosion-Resistant Nd-TM-B Magnet

AU - Shimotomai, M.

AU - Fukuda, Y.

AU - Fujita, A.

AU - Ozaki, Y.

PY - 1990/9

Y1 - 1990/9

N2 - In search for a compatibility of magnetic properties and corrosion resistance, a pseudo-ternary system Nd-(Fe1-x-yCoxNiy)-B was studied in forms of melt-spun ribbons and sintered bodies. It has been found that the double substitutions with 0.2≤x≤0.45 and 0.05≤y≤0.25 in the composition of ordinary NdFeB magnet yield good corrosion resistance and also preserve moderate coercivity values. A further small, substitution of Ti atoms for Fe atoms enhances the coercivity and makes the demagnetization curve rectangular. For example, (BH)max and iHc in sintered magnets of Nd15(Fe.585Co.3Ni.1Ti.015)77B8 have amounted to 34 MGOe and 10.4 kOe, respectively.

AB - In search for a compatibility of magnetic properties and corrosion resistance, a pseudo-ternary system Nd-(Fe1-x-yCoxNiy)-B was studied in forms of melt-spun ribbons and sintered bodies. It has been found that the double substitutions with 0.2≤x≤0.45 and 0.05≤y≤0.25 in the composition of ordinary NdFeB magnet yield good corrosion resistance and also preserve moderate coercivity values. A further small, substitution of Ti atoms for Fe atoms enhances the coercivity and makes the demagnetization curve rectangular. For example, (BH)max and iHc in sintered magnets of Nd15(Fe.585Co.3Ni.1Ti.015)77B8 have amounted to 34 MGOe and 10.4 kOe, respectively.

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Corrosion-Resistant Nd-TM-B Magnet

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