Effect of annealing on microstructural changes of Nd-rich phases and magnetic properties of Nd–Fe–B sintered magnet

D. W. Park; Tae Hoon Kim; Seong Rae Lee; D. H. Kim; T. S. Jang

doi:10.1063/1.3348479

Effect of annealing on microstructural changes of Nd-rich phases and magnetic properties of Nd–Fe–B sintered magnet

D. W. Park, Tae Hoon Kim, Seong Rae Lee, D. H. Kim, T. S. Jang

Department of Materials Science and Engineering

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

14 Citations (Scopus)

Abstract

The microstructural changes of Nd-rich interface phases during postsintering annealing were investigated. A mixture of very fine (about 2–3 nm) crystallites of hexagonal [formula omitted], cubic [formula omitted] [formula omitted], and amorphous phases were observed at the interface phase in the as-sintered magnet and after the first postsintering annealing process. The transformation from [formula omitted] to [formula omitted] occurred during the second postsintering annealing process, and the resulting [formula omitted] has the proper crystallographic relation with the main phase. The reduced lattice mismatch between the (110) plane of [formula omitted] interface phase and the (001) or (100) plane of Nd–Fe–B main phase after the second postsintering annealing process is the primary reason for the enhancement in the magnetic properties.

Original language	English
Pages (from-to)	179
Number of pages	1
Journal	Journal of Applied Physics
Volume	107
Issue number	9
DOIs	https://doi.org/10.1063/1.3348479
Publication status	Published - 2010 May 1

ASJC Scopus subject areas

Physics and Astronomy(all)

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abstract = "The microstructural changes of Nd-rich interface phases during postsintering annealing were investigated. A mixture of very fine (about 2–3 nm) crystallites of hexagonal [formula omitted], cubic [formula omitted] [formula omitted], and amorphous phases were observed at the interface phase in the as-sintered magnet and after the first postsintering annealing process. The transformation from [formula omitted] to [formula omitted] occurred during the second postsintering annealing process, and the resulting [formula omitted] has the proper crystallographic relation with the main phase. The reduced lattice mismatch between the (110) plane of [formula omitted] interface phase and the (001) or (100) plane of Nd–Fe–B main phase after the second postsintering annealing process is the primary reason for the enhancement in the magnetic properties.",

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AU - Park, D. W.

AU - Kim, Tae Hoon

AU - Lee, Seong Rae

AU - Kim, D. H.

AU - Jang, T. S.

PY - 2010/5/1

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N2 - The microstructural changes of Nd-rich interface phases during postsintering annealing were investigated. A mixture of very fine (about 2–3 nm) crystallites of hexagonal [formula omitted], cubic [formula omitted] [formula omitted], and amorphous phases were observed at the interface phase in the as-sintered magnet and after the first postsintering annealing process. The transformation from [formula omitted] to [formula omitted] occurred during the second postsintering annealing process, and the resulting [formula omitted] has the proper crystallographic relation with the main phase. The reduced lattice mismatch between the (110) plane of [formula omitted] interface phase and the (001) or (100) plane of Nd–Fe–B main phase after the second postsintering annealing process is the primary reason for the enhancement in the magnetic properties.

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Effect of annealing on microstructural changes of Nd-rich phases and magnetic properties of Nd–Fe–B sintered magnet

Abstract

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