Study on microstructure and magnetic properties of nitrogen-annealed Nd-Fe-B nanocomposite magnets - Details

author：

Wang, Chen (Wang, Chen.) ^[1] (Scholars：王晨) | Chen, Junjun (Chen, Junjun.) ^[2] | Dai, Pinqiang (Dai, Pinqiang.) ^[3] | Li, Qiang (Li, Qiang.) ^[4] (Scholars：李强)

Indexed by：

CPCI-S EI Scopus

Abstract：

The　effects　of　nitrogen　annealing　on　the　microstructure　and　magnetic　properties　of　melt-spun　Nd-Fe-Co-Zr-B　alloy　have　been　studied.　It　is　shown　that　the　ribbons　annealed　in　purified　argon　atmosphere　are　composed　of　Nd2Fe14B　and　alpha-Fe　phases,　the　microstructure　of　ribbons　is　homogeneous　and　fine-grained.　The　nitrogen-annealed　ribbons　are　composed　of　Nd2Fe14B,　NdBN2　and　alpha-Fe　phases,　the　microstructure　of　ribbons　is　relatively　heterogeneous　and　coarse-grained.　The　increase　of　nitrogen　content　in　the　annealing　atmosphere　can　increase　the　volume　fractions　of　NdBN2　and　alpha-Fe　phases　in　the　ribbons.　The　remanence,　intrinsic　coercivity　and　the　maximum　energy　product　of　ribbons　are　decreased　with　increasing　the　nitrogen　content　in　the　annealing　atmosphere.

Keyword：

Hard Magnets NdFeB Nitrogen Annealing Rare Earth

Community：

[ 1 ] [Wang, Chen]Fuzhou Univ, Coll Mat Sci & Engn, Fuzhou 350108, Peoples R China
[ 2 ] [Chen, Junjun]Fuzhou Univ, Coll Mat Sci & Engn, Fuzhou 350108, Peoples R China
[ 3 ] [Dai, Pinqiang]Fuzhou Univ, Coll Mat Sci & Engn, Fuzhou 350108, Peoples R China
[ 4 ] [Li, Qiang]Fuzhou Univ, Coll Mat Sci & Engn, Fuzhou 350108, Peoples R China