Current Status and Research Trend of Rare-earth Permanent Magnet

남궁석,; 조상근,; 김진배,

doi:10.4283/jkms.2012.22.6.221

Cited by 5 publications

(1 citation statement)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Rare earth Nd-Fe-B magnet have the highest magnetic properties among all commercially available permanent magnets and they are ideal candidates for sophisticated applications as severe operating environment. Nd-Fe-B magnets are widely used in industries such as IT, MRI, automobile and wind generators [1][2][3][4][5]. Especially, in such automobile application such as hybrid electric vehicles (HEV) and electric vehicles (EV) it is necessary for the magnets to operate at temperature up to 150°C.…”

Section: Introductionmentioning

confidence: 99%

Archives of Metallurgy and Materials

Cho¹,

Abbas²,

Yong-Ho-Choa³

et al. 2019

View full text Add to dashboard Cite

Rare earth Nd-Fe-B, a widely used magnet composition, was synthesized in a shape of powders using gas atomization, a rapid solidification based process. The microstructure and properties were investigated in accordance with solidification rate and densification. Detailed microstructural characterization was performed by using scanning electron microscope (SEM) and the structural properties were measured by using X-ray diffraction. Iron in the form of α-Fe phase was observed in powder of about 30 μm. It was expected that fraction of Nd 2 Fe 14 B phase increased rapidly with decrease in powder size, on the other hand that of α-Fe phase was decreased. Nd-rich phase diffused from grain boundary to particle boundary after hot deformation due to capillary action. The coercivity of the alloy decreased with increase in powder size. After hot deformation, Nd 2 Fe 14 B phase tend to align to c-axis.

show abstract

Section: Introductionmentioning

confidence: 99%