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A series of CexFebalB6 ($x=12$ , 14, 17, 19, and 23 wt%) ternary ribbons was prepared by melt-spinning. Magnetic properties and the microstructure of the Ce–Fe–B ribbons with different Ce contents were investigated. The X-ray diffraction results indicated that multiphase coexisted in the as-spun Ce–Fe–B ribbons, which contained Ce2Fe17, CeFe2, Ce-rich phase, Fe-rich phase, cerium oxide, and iron...
To meet the requirement of high coercivity of sintered Nd-Fe-B magnets in various applications of traction motors and wind power generators, substitution of Dy or Tb for Nd is essential [1, 2]. Through electrophoretic deposition (EPD), we first use the weight ratio of the DyF3 coatings and the magnet to characterize accurately the effective content of Dy in the GBDP magnets. Here we systematically...
Sintered Nd-Fe-B magnets have been widely applied in traction motors and wind power generators. To meet enough high coercivity for these applications, heavy rare earth elements (Dy/Tb) was substituted for Nd since the magnetocrystalline anisotropy field of Dy2Fe14B phase is much higher than that of Nd2Fe14B [1]. However, due to the limited resources and high cost, a new way that can enhance the coercivity...
One effective approach for obtaining high coercivity in sintered Nd-Fe-B magnets is to refine the grain size.[1] Recently, Sagawa and Une have developed He jet milling and pressless sintering technology for producing fine-grained Nd-Fe-B magnets with high coercivity of 2 T.[2] However, it is hard to refine the grain size further because that the size of lamellar structure consisting of Nd2Fe14B in...
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