Effect of DyMn alloy-powder addition on microstructure and magnetic properties of ndfeb sintered magnets

M. W. Lee; D. R. Dhakal; T. H. Kim; S. R. Lee; H. J. Kim; T. S. Jang

doi:10.1515/amm-2015-0142

Effect of DyMn alloy-powder addition on microstructure and magnetic properties of ndfeb sintered magnets

M. W. Lee, D. R. Dhakal, T. H. Kim, S. R. Lee, H. J. Kim, T. S. Jang

Department of Materials Science and Engineering

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

3 Citations (Scopus)

Abstract

Micostructural change and corresponding effect on coercivity of a NdFeB sintered magnet mixed with small amount of DyMn powder was investigated. In the sintered magnet mixed with the DyMn alloy-powder Dy-rich shell was formed at outer layer of the main grains, while Mn was mostly concentrated at Nd-rich triple junction phase (TJP), lowering melting temperature of the Nd-rich phase that eventually improved the microstructural characteristics of the gain boundary phase. The coercivity of a magnet increased more than 3.5 kOe by the mixing of the DyMn alloy-powder.

Original language	English
Pages (from-to)	1407-1409
Number of pages	3
Journal	Archives of Metallurgy and Materials
Volume	60
Issue number	2
DOIs	https://doi.org/10.1515/amm-2015-0142
Publication status	Published - 2015

Keywords

Coercivity
DyMn-alloy powder
Low melting point element
NdFeB sintered magnets

ASJC Scopus subject areas

Metals and Alloys

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10.1515/amm-2015-0142

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abstract = "Micostructural change and corresponding effect on coercivity of a NdFeB sintered magnet mixed with small amount of DyMn powder was investigated. In the sintered magnet mixed with the DyMn alloy-powder Dy-rich shell was formed at outer layer of the main grains, while Mn was mostly concentrated at Nd-rich triple junction phase (TJP), lowering melting temperature of the Nd-rich phase that eventually improved the microstructural characteristics of the gain boundary phase. The coercivity of a magnet increased more than 3.5 kOe by the mixing of the DyMn alloy-powder.",

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AU - Lee, M. W.

AU - Dhakal, D. R.

AU - Kim, T. H.

AU - Lee, S. R.

AU - Kim, H. J.

AU - Jang, T. S.

PY - 2015

Y1 - 2015

N2 - Micostructural change and corresponding effect on coercivity of a NdFeB sintered magnet mixed with small amount of DyMn powder was investigated. In the sintered magnet mixed with the DyMn alloy-powder Dy-rich shell was formed at outer layer of the main grains, while Mn was mostly concentrated at Nd-rich triple junction phase (TJP), lowering melting temperature of the Nd-rich phase that eventually improved the microstructural characteristics of the gain boundary phase. The coercivity of a magnet increased more than 3.5 kOe by the mixing of the DyMn alloy-powder.

AB - Micostructural change and corresponding effect on coercivity of a NdFeB sintered magnet mixed with small amount of DyMn powder was investigated. In the sintered magnet mixed with the DyMn alloy-powder Dy-rich shell was formed at outer layer of the main grains, while Mn was mostly concentrated at Nd-rich triple junction phase (TJP), lowering melting temperature of the Nd-rich phase that eventually improved the microstructural characteristics of the gain boundary phase. The coercivity of a magnet increased more than 3.5 kOe by the mixing of the DyMn alloy-powder.

KW - Coercivity

KW - DyMn-alloy powder

KW - Low melting point element

KW - NdFeB sintered magnets

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Effect of DyMn alloy-powder addition on microstructure and magnetic properties of ndfeb sintered magnets

Abstract

Keywords

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