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 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 …

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 …

To date, the highest coercivity reported for Dy-free Nd–Fe–B sintered magnets under the Dy
grain boundary diffusion (GBD) process is∼ 2.4 T. Therefore, exploring various approaches …

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 …

Grain boundary diffusion (GBD) efficiency of heavy rare-earth (HRE) elements for Nd–Fe–B
magnets is closely related to the chemical composition of the initial magnets but this has not …

Grain boundary diffusion (GBD) is an effective approach for improving the coercivity of Nd-
Fe-B magnets with less heavy rare earth consumption. However, it generally only works well …

Grain boundary diffusion is an effective approach to enhance coercivity for Nd-Fe-B magnets
with reduced consumption of heavy rare earths (HRE). However, during diffusion treatment …

Coercivity enhancement of thicker sintered NdFeB magnets with 5–10 mm in thickness by
grain boundary diffusion (GBD) with low-melting Tb 75− x Ce x Cu 25 alloy powders (x= 0 …

We report magnetic and microstructural changes in Nd-Fe-B sintered magnets after the grain
boundary diffusion process (GBDP) of low-melting LRE-Al-Cu alloys [LRE (Light Rare …