What question did this study set out to answer?

The aim is to understand how titanium doping affects grain boundary phases and Dy diffusion behavior in magnets.

March 2, 2026Open Access

Effect of Ti Doping on the Grain Boundary Phases in Sintered Nd-Ce-Fe-B and Its Influence on the Diffusion Behavior of Heavy Rare Earth Dy

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Shows Ti doping enhances Dy diffusion in Nd-Ce-Fe-B magnets, suggesting improved rare earth resource utilization.

The aim is to understand how titanium doping affects grain boundary phases and Dy diffusion behavior in magnets.
0.2 wt% titanium was doped into Nd-Ce-Fe-B magnets.
Grain size was refined, and the volume fraction of RE6Fe13Ga was increased.
Magnetic properties such as Br, Hcj, and coercivity were measured.
The effects of Ti doping on Dy segregation and incorporation were analyzed.
Doping with 0.2 wt% Ti improved the coercivity by 8.66 kOe compared to pristine magnets.
The magnet exhibited strong magnetic properties with Br = 14.03 kGs and (BH)max = 47.15 MGOe.
Ti doping promoted continuous thin grain boundaries and enhanced Dy incorporation into the main phase.
RE6Fe13Ga phase formation helped suppress Dy segregation, optimizing its utilization.

Ye et al. (2026) studied this question.

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