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

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

Research output: Contribution to journalArticle

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 languageEnglish
Pages (from-to)1407-1409
Number of pages3
JournalArchives of Metallurgy and Materials
Volume60
Issue number2
DOIs
Publication statusPublished - 2015

Keywords

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

ASJC Scopus subject areas

  • Metals and Alloys

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