Microstructure-coercivity relationships of Nd-Fe-B Base permanent magnets

K. Hono; T. Ohkubo; H. Sepehri-Amin

doi:10.2320/jinstmet.76.2

Microstructure-coercivity relationships of Nd-Fe-B Base permanent magnets

K. Hono, T. Ohkubo, H. Sepehri-Amin

Research output: Contribution to journal › Review article › peer-review

20 Citations (Scopus)

Abstract

In spite of the long research history of Nd-Fe-B magnets, the understanding of the microstructure-coercivity relationships is not sufficient because of the difficulty of high quality microscopy work due to the strong oxidation tendency of Nd-rich phases during microscopy specimen preparation processes. In this paper, we review recent investigations on the microstructure-coercivity relationships using scanning electron microscopy, high resolution transmission electron microscopy (HRTEM) and laser assisted three-dimensional atom probe (3DAP) and discuss how to enhance the coercivity of Nd-Fe-B anisotropic magnets without using Dy.

Original language	English
Pages (from-to)	2-11
Number of pages	10
Journal	Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals
Volume	76
Issue number	1
DOIs	https://doi.org/10.2320/jinstmet.76.2
Publication status	Published - 2012 Jan
Externally published	Yes

Keywords

Coercivity
Microstructure
Neodymium-iron-boron permanent magnet

ASJC Scopus subject areas

Condensed Matter Physics
Mechanics of Materials
Metals and Alloys
Materials Chemistry

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10.2320/jinstmet.76.2

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AU - Hono, K.

AU - Ohkubo, T.

AU - Sepehri-Amin, H.

PY - 2012/1

Y1 - 2012/1

N2 - In spite of the long research history of Nd-Fe-B magnets, the understanding of the microstructure-coercivity relationships is not sufficient because of the difficulty of high quality microscopy work due to the strong oxidation tendency of Nd-rich phases during microscopy specimen preparation processes. In this paper, we review recent investigations on the microstructure-coercivity relationships using scanning electron microscopy, high resolution transmission electron microscopy (HRTEM) and laser assisted three-dimensional atom probe (3DAP) and discuss how to enhance the coercivity of Nd-Fe-B anisotropic magnets without using Dy.

AB - In spite of the long research history of Nd-Fe-B magnets, the understanding of the microstructure-coercivity relationships is not sufficient because of the difficulty of high quality microscopy work due to the strong oxidation tendency of Nd-rich phases during microscopy specimen preparation processes. In this paper, we review recent investigations on the microstructure-coercivity relationships using scanning electron microscopy, high resolution transmission electron microscopy (HRTEM) and laser assisted three-dimensional atom probe (3DAP) and discuss how to enhance the coercivity of Nd-Fe-B anisotropic magnets without using Dy.

KW - Coercivity

KW - Microstructure

KW - Neodymium-iron-boron permanent magnet

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Microstructure-coercivity relationships of Nd-Fe-B Base permanent magnets

Abstract

Keywords

ASJC Scopus subject areas

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