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With high magnetic properties, sintered NdFeB magnets are used in many crucial areas all over the world. The enhancement of corrosion resistance of sintered NdFeB has been paid much attention in recent years, especially when the magnets are to bear with harsh environmental conditions. The magnets tend to be preferentially oxidized and dissoluted, causing the haywire or malfunction of the devices which...
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...
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