Rare earth permanent magnets are essential in a plethora of electrical machine and
renewable energy. Nd-Fe-B magnets account for half of the market share of permanent …

The magnetic performance of Nd-Fe-B magnets depends on their grain boundary structure.
Intergranular addition and grain boundary diffusion (GBD) process are effective approaches …

Grain boundary diffusion (GBD) of multiple rare earths has proven effective in enhancing the
performance of permanent magnets, whereas the diffusion behaviors are still unclear due to …

We revisited the microstructure of a commercial Nd-Fe-B sintered magnet using scanning
electron microscopy (SEM) and aberration corrected scanning transmission electron …

The continuous increase in the output of Nd-Fe-B permanent magnets leads to the
increasing consumption of rare earth (RE) metals of Nd, Pr, Tb and Dy. As a result, a serious …

Diffusion efficiency and oxidation resistance of Pr-Tb-Cu source were simultaneously
improved by introducing Al or Ni. The diffusion efficiency of source is effectively improved by …

To high-power permanent magnetic motors, it is critical for Nd-Fe-B magnets to maintain the
desirable coercivity at high-temperature operating conditions. To address this, two …

We present a potent pathway,(Nd, Pr) H x and Cu grain boundary engineering, to tackle the
trade-offs between coercivity, remanence and corrosion resistance of Nd-Ce-Fe-B sintered …

Abstract Low melting point Pr-Al-Cu alloys were employed in grain boundary diffusion for
sintered NdFeB magnets. The coercivity of the 7× 7× 2 mm magnet was enhanced from …

Abstract Multi-main-phase (MMP) Nd-Ce-Fe-B magnets prepared by sintering the mixture of
Ce-free and Ce-containing RE 2 Fe 14 B (RE, rare earth) powders have been found to …