Grain boundary diffusion technique

Grain boundary diffusion processing diagram

Working principle

By adding a small amount of Dy/Tb, Hcj is greatly improved and Br decline is avoided. The amount of heavy rare earth is reduced by more than 60%, and the thickness of unilateral diffusion layer is increased.

Grain refinement & Grain boundary reconstruction

Relationship between grain size and magnet properties (Hcj)

High abundance rare earth permanent magnet technology

Batch production has been achieved: N35-N52 35M-50M 35H-45H  35SH-40SH