Microstructure and Magnetic Properties of NdFeB Magnets Using Fluorides Nano-Coated Process

Matahiro Komuro; Yuichi Satsu; Hiroyuki Suzuki

doi:10.4028/www.scientific.net/MSF.638-642.1357

Paper Titles

Tensile Ductility of Cast TiAl Alloys
p.1336

Physical and Mechanical Properties of Single Crystals of Co-Al-W Based Alloys with L1₂ Single-Phase and L1₂/fcc Two-Phase Microstructures
p.1342

Various Properties of Dual-Phase Intermetallic Compound in Ni-Al System
p.1348

Forging of Titaniumaluminide Parts
p.1353

Microstructure and Magnetic Properties of NdFeB Magnets Using Fluorides Nano-Coated Process
p.1357

The Influence of Deformation Conditions on Structure of Fe-Al Intermetallic Phase ‒ Based Alloys
p.1362

Microstructure and Mechanical Properties of a Cast Intermetallic Ti-46Al-8Ta Alloy
p.1368

Comparison of Fluorination Treatments to Improve the High Temperature Oxidation Resistance of TiAl Alloys in SO₂ Containing Environments
p.1374

Microstructure and Mechanical Properties of Zr-Co-Ni Intermetallic Compound
p.1379

HomeMaterials Science ForumMaterials Science Forum Vols. 638-642Microstructure and Magnetic Properties of NdFeB...

Microstructure and Magnetic Properties of NdFeB Magnets Using Fluorides Nano-Coated Process

Abstract:

Nd2Fe14B magnets could be sintered using terbium fluoride coated Nd2Fe14B powders. Fluorine atoms were segregated at the triple junctions and grain boundary after sintering and aging process. NdOF with fcc structure was grown at the triple junction. Terbium atoms were also distributed near grain boundaries by interdiffusion between the fluoride and Nd2Fe14B. No fluorine atoms were detected in Nd2Fe14B phase. The coercivity for 0.5wt% terbium fluoride coated magnet showed 1.23 MA/m which was 1.2 times higher than that for non-coated magnet with 1.04MA/m. The distribution of terbium and fluorine atoms increases the coercivity without reduction of remanence.

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Materials Science Forum (Volumes 638-642)

Pages:

1357-1361

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.638-642.1357

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Online since:

January 2010

Authors:

Matahiro Komuro, Yuichi Satsu, Hiroyuki Suzuki

Keywords:

Coating, Coercivity, Composition, Fluoride, Grain Boundary, Magnet, Microstructure, NdFeB, Rare Earth (RE)

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